Philip Bos
Biography
Dr. Philip J. Bos is Associate Director of the Liquid Crystal Institute and a Professor in the Chemical Physics Interdisciplinary Program at ĂŰŃżappUniversity. He is the inventor of the pi cell and an alignment method for SmC* devices. His research interests include novel liquid crystal devices and applications.
Education
Ph.D. Physics ĂŰŃżappUniversity May, 1978
(Deuterium Magnetic Resonance Studies of Orientational Order in the Liquid Crystalline Phases)
M.A. Physics ĂŰŃżappUniversity Sept., 1974
B.A. Physics Hope College June, 1973
Employment
2001-present Professor, Chemical Physics Program
Liquid Crystal Institute, ĂŰŃżappUniversity
1997-present Associate Director ; Liquid Crystal Institute, ĂŰŃżappUniversity
1995- 2001 Associate Professor, Chemical Physics Program
Liquid Crystal Institute, ĂŰŃżappUniversity
7/95 - 9/95 Interim Director, Liquid Crystal Institute
1994-1995 Senior Research Fellow, Liquid Crystal Institute
ĂŰŃżappUniversity
1984-1993 Principal Scientist, Display Research Dept.
Tektronix Laboratories, Tektronix Inc.
1981-1984 Senior Scientist, Display Research Dept.
Tektronix Laboratories, Tektronix Inc.
1979-1981 Scientist, Display Research Dept.
Tektronix Laboratories, Tektronix Inc.
1978-1979 Postdoctoral Fellow, Liquid Crystal Institute,
ĂŰŃżappUniversity
Honors and Awards
Invited Ben Sturgen Lecturer for 25th British Liquid Crystal Society Annual Conference. ( 2011)
Slottow-Owaki Prize ( for outstanding contribution to education in the field of information display ), Society for Information Display, 2010
Fellow, Society for Information Display
Distinguished Scholar Award, ĂŰŃżappUniversity, 2006
Educational Activities
Course Development and Teaching
Developed Graduate level course â Liquid Crystal Displaysâ . Course has been offered annually since 1995.
Co-developed continuing education course âLiquid Crystals: Materials and Display Devicesâ. Course has been offered annually since about 1993
Developed Graduate level course âLiquid Crystal Device Prototypingâ. Course has been offered annually since 2011
Graduate Students:
Chad Hoke 1995-1999 Ph.D. (to Hewlett Packard Labs)
Assad Kahn 1995-1995 M.S ( to Kent Display Systems)
Jim Anderson 1995 2002 PhD ( to Hana Microdisplays Inc.)
Philip Watson 1996- 2000 Ph.D ( to 3M Optical Devices Div)
Hiroyuki Mori 1996-1999 Ph.D ( to Fuji Photo Film )
Chuck Titus 1997- 2000 Ph.D ( independent consultant)
Mike Alimov 1998-1999 M.S ( to S-Vision)
Shuxin Li 1998-1999 M.S. ( to Densitron)
Salman Saeed 1998-2002 Ph.D ( to 3-5 Systems)
Bin Wang 1999-2001 PhD ( to Agilent)
Erica Bramley 2000-2003 PhD ( to Kodak)
Chenhui Wang 2000-2003 PhD ( to ChemImage)
Jianru Shi 2001-2005 PhD ( Post â Doc )
Xinghua Wang 2002-2005 PhD ( to ChemImage)
Yanli Zhang 2002-2005 PhD ( to Intel )
Cheng Chen 2003-2006 PhD (to Apple Computer)
Yong-Kyu Jang 2005-2007 PhD ( to Samsung Electronics)
Mitya Reznikov 2005-2008 PhD (to Technion University)
Lei Shi 2006-2009 PhD (to ChemImage )
Mike Dorjgotov 2006-2010 PhD ( to Apple Computer)
Yi Huang 2008-2013 PdD ( to Apple Computer)
Lu Lu 2009-2012 PhD ( to Pittsburgh Plate Glass)
Liwei Li 2009-2013 PhD ( to Compound Photonics)
Hsien-Hui Cheng 2011-2015 PhD (to Z-Space)
Valerie Finnemeyer 2012-2016 PhD (to MIT Lincoln Laboratory)
Kun Gao 2014-2017 PhD (to BEAM Co.)
Afsoon Jamali 2015-
Colin McGinty 2015-
Comrun Yousefzadeh 2016-
Post Docs:
Mark Flynn 1994 (to Kaiser Electronics)
Dave Fredley 1994 - 1995 ( to Motorola)
Jon Ruth 1994 -2003 ( to Alpha-Micron)
Jianlin Li 1995-1996 (to Polytronix)
Jianmin Chen 1995-1996 ( to Samsung)
Jianfung Li 1996-1997 (to Reveo)
Ray Folks 1995-1996
Vasa Sergan 1996 â2002 (California State University, Sacremento
George Barrick 2002-2003 ( to CWRU)
Gi-Dong Li 2001-2003 ( to Pusan University)
Mike Fisch 2002-2003 ( to NEOBeam)
Bin Wang 2003-2006 ( to Eastman Chemical)
Bentley Wall 2005-2008 ( to Dynamic Eye)
Ke Zhang 2006-20
Visiting Scientists
Janez Pirs annually (Inst. of Joseph Stephan, Slovenia)
H. Wilderbeek 1999 (Eindhoven University of Technology)
D.L.Seekola 1999 (University of Pretoria)
Prof. H. Okada 3/96 - 8/96 (Toyama Univ)
Prof. T. Nose 3/96 - 8/96 (Akita Univ)
N-D Kim 9/95 - 8/96 (Samsung)
Hiroyuki Mori 9/96 â 9/99 (Fugi-Film)
Jianmin Chen 1997 (Samsung)
J.J. Lyu 1997 (Samsung)
Byung-Seob Ban 2005 (Samsung)
Andriy Nych 2006 (Institute of Physics, Kiev, Ukraine)
Oleg Yaroshchuk 2013 (Institute of Physics, Kiev, Ukraine)
Professional Society Activities
Facebook/Oculus Technology Advisory Board ( 2015)
Member program committee for the Society for Information Display annual conference. and session chairman 2014 â 2016
Associate Editor of the Journal of the Society for Information Display ( 2008-2013)
Chair, Academic Committee, Society for Information Display ( 2008-2013)
Member program committee, 2008 International Display Research Conference
General Chair, 26th International Display Research Conference; Kent , Ohio ( 2006)
Member, Scientific Committee, 21st International Liquid Crystal Conference, Keystone Co, (2006)
Member program committee for the Society for Information Display annual conference. and session chairman 1993? â 2013
Member Scientific Committee, 19th International Liquid Crystal Conference, Edinburgh (2002)
General Chair: 20th International Display Research Conference, Palm Beach Florida ( 2000)
Oversees Advisor, 6- 12th International Display Workshops, Japan (1999-2009);
Member Scientific Committee, and session chair: 18th International Liquid Crystal Conference, Sendai Japan ( 2000)
Program Chair for 1997 International Display Research Conference, Toronto
NSF Engineering Research Center Site review team for Opto-electronic Computing Systems Center at Univ. of Colorado (Feb 15, 1996)
Program Committee member and Session chair at the 1994 International Display Research Conference, Monterey.
Past Member, Editorial Board of Liquid Crystals
Book Edited
â Mobile Displays, technology and applicationsâ Achintya Bhowmik, Zili Li, Philip Bos, Wiley (2008)
Book Chapters
Towards True 3D Visual Displays and Immersive Interactions; J.Larimer, P.Bos, A.Bhowmik; as part of a book âInteractive Displaysâ edited by Achintya K. Bhowmik to be published in 2014 by John Wiley & Sons, Ltd.,
Alignment Layer Considerations for Defect-Free Bistable Smectic C Devices, Philip Bos, Chenhui Wang, Philip Watson in âProgress in Liquid Crystal Science and Technologyâ, H-S Kwok, S.Naemura, H.Ong, World Scientific (2013)
The Pi Cell, Philip Bos, in âHandbook of Visual Display Technology, Ed:J.Chen, W.Cranton, M.Fihn, Springer-Verlag (2011)
â Introduction to mobile display technologiesâ Achintya Bhowmik, Zili Li, Philip Bos Chapter 1 in â Mobile Displays, technology and applicationsâ Achintya Bhowmik, Zili Li, Philip Bos, Wiley (2008)
The Effect of Polymer Networks on Twisted Nematic and SuperTwisted Nematic Displays . chapter by P.J.Bos, D. Fredley, J. Li, J. Rahman, Book edited by G. Crawford, Title of Book: Liquid Crystals in Complex Geometries Formed by Polymer and Porous Networks. Publisher : Taylor and Francis
Liquid Crystal Shutter Systems for Time-Multiplexed stereoscopic Displays in Stereo Computer Graphics and Other True 3D Technologies , Princeton Univ Press
Improvement of the Viewing Angle for Display Devices with Gray Scale, P. J. Bos, chapter in Liquid Crystals in the Nineties and Beyond Ed Satyendra Kumar, publisher: World Scientific Publishing. c 1995
Refereed Publications
Journal Articles: (155)
âHigh-efficiency large-angle Pancharatnam phase deflector based on dual-twist designâ
Kun Gao, Colin McGinty, Harold Payson, Shaun Berry, Joseph Vornehm, Valerie Finnemeyer, Brian Roberts , and Philip Bos OPTICS EXPRESS 25,no6, 20 Mar 2017 p6283
â Kim, Min Su; Bos, Philip J.; Kim, Dong-Woo; et al. OPTICS EXPRESS Volume: 24 Issue: 26 Pages: 29568-29576 Published: DEC 26 2016
ââ Kim, Min Su; Bos, Philip J.; Kim, Dong-Woo; et al.
SCIENTIFIC REPORTS Volume: 6 Article Number: 35254 Published: OCT 12 2016
&˛Ô˛ú˛őąč;âBroadband optical switch based on liquid crystal dynamic scatteringâ; Geis, MW; Bos, P; Liberman, V; Rothschild, M; OPTICS EXPRESS SN 1094-4087 PD JUN 27 PY 2016 VL 24 IS 13 BP 13812 EP 13823
âScalable Fabrication Process for Liquid Crystal-Based Uncooled Thermal Imagersâ; Berry, S; Bozler, CO; Reich, RK; Clark, HR; Bos, P; Finnemeyer, V; McGinty, C; JOURNAL OF MICROELECTROMECHANICAL SYSTEMS; JUN PY 2016 VL 25 IS 3 BP 479 EP 488
âNonmechanical zoom lens based on the Pancharatnam phase effectâ; Gao, K; Cheng, HH; Bhowmik, A; McGinty, C; Bos, P; APPLIED OPTICS SN 1559-128X EI 2155-3165 PD FEB 10 PY 2016 VL 55 IS 5 BP 1145 EP 1150
âAnalysis of a dual-twist Pancharatnam phase device with ultrahigh-efficiency large-angle optical beam steeringâ; Cheng, HH; Bhowmik, AK; Bos, PJ; APPLIED OPTICS SN 1559-128X EI 2155-3165 PD DEC 1 PY 2015 VL 54 IS 34 BP 10035 EP 10043
âMaximizing electro-optic performances in the fringe-field switching liquid crystal mode with negative dielectric anisotropic liquid crystalâ Lim, YJ; Kim, JH; Choi, HS; Lee, BH; Kim, DH; Kundu, S; Jung, JH; Lee, SH; Bos, PJ; JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY SN 1071-0922 EI 1938-3657 PD NOV PY 2015 VL 23 IS 11 BP 553 EP 559
âThin-film Pancharatnam lens with low f-number and high qualityâ. Gao, K; Cheng, HH; Bhowmik, AK; Bos, PJ; OPTICS EXPRESS SN 1094-4087 PD OCT 5 PY 2015 VL 23 IS 20 BP 26086 EP 26094
ââ; Finnemeyer, V.; Bryant, D.; Reich, R.; Clark, H.; Berry, S.; Bozler, C; Yaroshchuk,O.; Lu, L.; Bos, P; JOURNAL OF APPLIED PHYSICS Volume: 118 Issue: 3 Article Number: 034501 Published: JUL 21 2015
âConcept for a Transmissive , large angle, light steering device with high efficiencyâ Cheng, H-H; Bhowmik, A.K.; Bos, P.J: Optics Letters 40(9) p 2080 ( May 1, 2015)
âLow voltage fast response display using dual pi-cells with quarter-wave thicknessâ Cheng, H-H; Bhowmik,A.K; Bos, P.J.; Journal of the Society for Information Display 22(5) p229 ( May 2014)
âLiquid crystal lens with concentric electrodes and inter-electrode resistorsâ Li, L.; Bryant, D.; Bos, P.: Liquid Crystal Reviews 2(2) p 130 ( 2014)
ââ; Li, Liwei; Bos, Philip
MOLECULAR CRYSTALS AND LIQUID CRYSTALS Volume: 594 Issue: 1 Special Issue: SI Pages: 78-85 Published: MAY 3 2014
â Speed, optical power, and off-axis imaging improvement of refractive liquid crystal lensesâ; Li, L.; Bryant, Doug; Van Heugten, Tony; Bos, P; APPLIED OPTICS Volume 53, Issue 6, pages 1124-1131, Published FEB 20, 2014
â Fast-response liquid crystal variable optical retarder and multilevel attenuatorâ; Cheng, H.; Bhowmik, A.; Bos, P.; ; OPTICAL ENGINEERING, Volume 52, Issue 10, Article Number 107105, Published OCT 2013
âSurface localized polymer aligned liquid crystal lensâ; Lu, L; Sergan, V; Van Heugten, T ; Duston, D; Bhowmik, A); Bos, PJ OPTICS EXPRESS Volume: 21 Issue: 6 Pages: 7133-7138 Published: MAR 25 2013
âPhysical limitations and fundamental factors affecting performance of liquid crystal tunable lenses with concentric electrode ringsâ Li, LW; Bryant, D ; van Heugten, T; Bos, PJ APPLIED OPTICS Volume: 52 Issue: 9 Pages: 1978-1986 Published: MAR 20 2013
"Near-diffraction-limited tunable liquid crystal lens with simplified design,"; L. Li, D. Bryant, T. V. Heugten, D. Duston and P. J. Bos, Opt. Eng. 52(3), 035007 (2013).
"Near-diffraction-limited low-haze electro-optical tunable liquid crystal lens with floating electrodes,"; L. Li, D. Bryant, T. V. Heugten, and P. J. Bos, Optics Express, Vol 21,No7, p 8371 published 29 March 2013
âIn situ control of surface molecular order in liquid crystals using a localised polymer network and its application to electro-optical devicesâ; Sergan, TA; Sergan, V; Herrera, R; Lu, L; Bos, PJ; Sergan, EV LIQUID CRYSTALS Volume: 40 Issue: 1 Pages: 72-82 DOI: 10.1080/02678292.2012.733036 Published: JAN 1 2013
âThe effect of dielectric constant on ion adsorption in liquid crystal devicesâ; Lu, L; Bhowmik, A; Bos, P LIQUID CRYSTALS Volume: 40 Issue: 1 Pages: 7-13 DOI: 10.1080/02678292.2012.730641 Published: JAN 1 2013
âSpatial and orientational control of liquid crystal alignment using a surface localized polymer layerâ; Lu, L; Sergan, T; Sergan, V; Bos, PJ APPLIED PHYSICS LETTERS Volume: 101 Issue: 25 Article Number: 251912 DOI: 10.1063/1.4773010 Published: DEC 17 2012
âMechanism of electric-field-induced segregation of additives in a liquid-crystal hostâ; , Lu,Lu; Sergan, V; Bos, PJ PHYSICAL REVIEW E Volume: 86 Issue: 5 Article Number: 051706 DOI: 10.1103/PhysRevE.86.051706 Part: 1 Published: NOV 27 2012
âCharacterization of Ionic Impurities Adsorbed onto a 5 degrees SiOx Alignment Filmâ; Huang, Yi; Bhowmik, Achintya; Bos, Philip J. JAPANESE JOURNAL OF APPLIED PHYSICS Volume: 51 Issue: 3 March 2012 Article Number: 031701 DOI: 10.1143/JJAP.51.031701
âThe effect of salt on ion adsorption on a SiOx alignment film and reduced conductivity of a liquid crystal host â; Huang Yi; Bos Philip J.; Bhowmik Achintya JOURNAL OF APPLIED PHYSICS Volume: 111 Issue: 2 Jan 2012 Article Number: 024501 DOI: 10.1063/1.3676263
âLu Lu; Huang Yi; Zhang Ke; Liu,Na; Tweig, R.J.; Auman. B; Bhownik, A. Bos, P. JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY Volume: 19 Issue: 6 Pages: 447-452 DOI: 10.1889/JSID19.6.447 Published: JUN 2011
âThe effect of surface alignment on analog control of director rotation in polarization stiffened SmC* devicesâ; Reznikov Mitya; Lopatina Lena M.; O'Callaghan Michael J.; Bos, Philip JOURNAL OF APPLIED PHYSICS Volume: 109 Issue: 5 Article Number: 054108 DOI: 10.1063/1.3552297 Published: MAR 1 2011
ââ; Huang Yi; Bos Philip J.; Bhowmik Achintya JOURNAL OF APPLIED PHYSICS Volume: 108 Issue: 6 Article Number: 064502 DOI: 10.1063/1.3481088 Published: SEP 15 2010
âHigh tunability mixed order photonic crystalâ Dorjgotov, EA; Bhowmik, AK; Bos, PJ; APPLIED PHYSICS LETTERS, 96 (16): Art. No. 163507 APR 19 2010
âDynamics of a liquid-crystal variable optical prism based on Pancharatnam phaseâ Shi, L; McManamon, PF ; Bryant, D; Zhang, K ; Bos, PJ; APPLIED OPTICS, 49 (6): 976-985 FEB 20 2010
âComparison of organic and inorganic alignment layers for low-power liquid-crystal devices using low-frequency applied-voltage waveformsâ Huang, Y ; Bhowmik, A ; Bos, P JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, 18 (3): 206-210 MAR 2010
âControl of the molecular pretilt angle in liquid crystal devices by using a low-density localized polymer networkâ Sergan, VV ; Sergan, TA; Bos, PJ CHEMICAL PHYSICS LETTERS, 486 (4-6): 123-125 FEB 12 2010
âDesign considerations for high efficiency liquid crystal decentered microlens arrays for steering lightâ Shi, L ; Shi, J; McManamon, PF; Bos, PJ ; APPLIED OPTICS, 49 (3): 409-421 JAN 20 2010
âThe effect of SiOx alignment layer thickness on the switching of SmC* bistable liquid crystal devicesâ Reznikov, M ; Bos, PJ; O'Callaghan, MJ; JOURNAL OF APPLIED PHYSICS, 107 (1): Art. No. 014103 JAN 1 2010
âTuning the sensitivity of a liquid crystal-based chemical/biological sensor using a novel double layer alignment filmâ Zhang, K; Liu, N; Twieg, RJ; Bos, PJ ; LIQUID CRYSTALS, 36 (10-11): 1031-1035 2009
âPolarization-independent liquid-crystal-etalon modulatorâ Dorjgotov, EA ; Bhowmik, AK; Bryant, D; Chien, LC; Bos, PJ ; JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, 17 (12): 1015-1020 DEC 2009
âDesign of a wide bandwidth switchable mirror based on a liquid crystal etalonâ Dorjgotov, EA; Bhowmik, AK; Bos, P; JOURNAL OF APPLIED PHYSICS, 105 (10): Art. No. 104906 MAY 15 2009
âA Review of Phased Array Steering for Narrow-Band Electrooptical Systemsâ McManamon, PF; Bos, PJ; Escuti, MJ; Heikenfeld, J; Serati, S; Xie, HK; Watson, EA; PROCEEDINGS OF THE IEEE, 97 (6): 1078-1096 Sp. Iss. SI JUN 2009
âHigh Efficiency Liquid Crystal Etalon Modulator for Pico-Projection Displaysâ Dorjgotov, EA; Bhowmik, AK; Bos, PJ ; JAPANESE JOURNAL OF APPLIED PHYSICS, 48 (4): Art. No. 042201 Part 1 APR 2009
âEnhancement of the Direct Symmetric Splay to Bend Transition in Liquid Crystal Cellâ Wang, B; Zhang, YL; Jang, YK ; Bos, PJ ; JAPANESE JOURNAL OF APPLIED PHYSICS, 48 (2): Art. No. 022502 FEB 2009
âFactors affecting the dynamics of a pi-cellâ(Invited Paper) Huang, Y; Bos, PJ; Kim, KH; Jang, JK; Kim, HS; JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, 16 (9): 939-945 SEP 2008
âSwitchable polarization-independent liquid-crystal Fabry-Perot filterâ ; Dorjgotov, EA; Bhowmik, AK; Bos, PJ; APPLIED OPTICS, 48 (1): 74-79 JAN 1 2009
âPretilt study of double-layer alignment film (DLAF)â ; Zhang, K; Liu, N; Twieg, RJ; Auman, BC; Bos, PJ; LIQUID CRYSTALS, 35 (10): 1191-1197 2008
âConditions and limitations of perfect phase compensation in liquid crystal devicesâ; Jang, YK; Bos, P; JAPANESE JOURNAL OF APPLIED PHYSICS, 47 (7): 5466-5471 Part 1 JUL 200
âMonodomain alignment of the smectic-A liquid crystalline phase from the isotropic phaseâ; Reznikov, M; Wall, B; Handschy, MA; Bos, PJ; JOURNAL OF APPLIED PHYSICS, 104 (4): Art. No. 044902 AUG 15 2008
âLiquid crystal optical phase plate with a variable in-plane gradientâ Shi, L; McManamon, PF; Bos, PJ; JOURNAL OF APPLIED PHYSICS, 104 (3): Art. No. 033109 AUG 1 2008
âStudy of optimized curing conditions for polymer-stabilized pi-cell with compensation filmâ Jeong, SY; Kim, DW; Rhie, KW; Hong, MP; Bos, P; Jang, WG; Kim, KH; Shin, ST; JAPANESE JOURNAL OF APPLIED PHYSICS, 47 (3): 1647-1650 Part 1 MAR 2008 *
âAlignment memory of a nematic liquid crystal and thermal isotropization of the surface adsorbed layerâ; Nych, AB; Reznikov, DY; Boiko, OP; Nazarenko, VG; Pergamenshchik, VM; Bos, P; EPL, 81 (1): Art. No. 16001 2008
âAnchoring transitions of liquid crystals on SiOxâCheng Chen and Philip Bos, , Liquid Crystals, 35, 2008
âComparison and analysis of off-axis color shift properties of compensated liquid crystal devicesâ Yong-Kyu Jang, Philip Bos, Japanese Journal of Applied Physics, 46, 2007
âWide-angle achromatic prism beam steering for infrared countermeasures and imaging applications: solving the singularity problem in the two-prism designâ P. J.Bos, H. Garcia, V, Sergan, , Optical Engineering, 46, p113001 (2007)
âOptimization of the white state director configuration for perfectly compensated pi-cell devicesâ Yong-Kyu Jang, Philip Bos, Japanese Journal of Applied Physics, 46, 2007
âUniversal off-axis light transmission properties of the bright state in perfectly compensated liquid crystal devicesâ Yong-Kyu Jang, Philip Bos, , Journal of Applied Physics, 102, Issue 1, 013101-013101-6, July 1, 2007.
âAnalysis of the multireflection effects in compensated liquid crystal devicesâ Yong-Kyu Jang, Philip Bos, , Journal of Applied Physics, 101, Issue 3, 033131-033131-6, February 1, 2007.
âAlternative dynamics for the symmetric splay to bend transition in a nematic liquid crystal layerâ Yanli Zhang, David B. Chung, Bin Wang, Philip J. Bos, , Liquid Crystals,34, No. 2, 143-152, February 2007.
âModeling and performance limits of a large aperture high-resolution wavefront control system based on a liquid crystal spatial light modulatorâ Xinghua Wang, Bin Wang, Philip J. Bos, Paul F. McManamon, John J. Pouch, FĂŠlix A. Miranda, James E. Anderson Optical Engineering, 46, No. 4, 44001-1-17, April 2007.
âImproved liquid crystals for vertical alignment applications,âCheng, C., Bos, P. J., Kim, J., Li, Q., Anderson, J. E., J. Appl. Phys. 99, No. 12, 123523-1-6, (2006).
âSelective light-induced desorption: the mechanism of photoalignment of liquid crystals at adsorbing solid surfaces,âNazarenko, V. G., Boiko, O. P., Nych, J. A. B., Nastishin,Yu. A., Pergamenshchik, V. M., Bos, P., Europhysics Letters. v. 75, No. 3, 448-54, (2006).
âHigh-efficiency, liquid-crystal-based, controllable diffraction grating,âYanli Z., Wang, B., Bos, P. J., Colegrove, J., Chung, D. B., J. Opt. Soc. Am. A, (Optics, Image Science and Vision), 22, No. 11, 2510-15, (2005).
âModeling and design of an optimized liquid-crystal optical phased array,âWang, X., Wang, B., Bos, P. J., McManamon, P. F., Pouch, J. J., Miranda, F. A., Anderson, J. E., J. Appl. Phys. 98, No. 7, 73101-1-8, (2005).
âUniform vertical alignment of liquid crystal that has a large negative dielectric,â Chen, C., Anderson, J. E., Bos, P. J., Jpn. J. Appl. Phys., Part 2 (Letters). 44, N0. 33-36, L1126-7, (2005).
âControl of dispersion in form birefringent-based holographic optical retarders,â Montbach, E. N., Bos, P. J., Opt. Eng. 44, No. 12, 124001-1-6, (2005).
âBroadband optical phased-array beam steering,â McManamon, P. F., Shi, J., Bos, P. J., Opt. Eng. 44, No. 12, 128004-1-5, (2005).
âStressed liquid-crystal optical phased array for fast tip-tilt wavefront correction,â, Wang, B., Zhang, G., Glushchenko, A., West, J. L., Bos, P. J., McManamon, P. F., Appl. Optics. 44, No. 36, 7754-9, (2005).
âFinite-difference time-domain simulation of a liquid-crystal optical phased array,â X. Wang, B. Wang, P. Bos, J. Anderson, J. Pouch, F. Miranda, J. Opt. Soc. A A 22, No. 2, 346-354 (2005).
âMethods to obtain high-contrast-ratio twisted nematic liquid crystal device at wavelength of 1.55Âľm,â B. Wang, Y. Zhang, X. Wang, P. Bos, Jpn. J. Appl. Phys., 44 No. 3, 1344-1347 (2005).
âOptimizing the nematic liquid crystal relaxation speed by magnetic field,â B. Wang, X. Wang, P. Bos, J. Appl. Phys. 96, No. 4, 1785-1789 (2004).
âPerformance evaluation of a liquid-crystal-on-silicon spatial light modulator,â X. Wang, B. Wang, J. Pouch, F. Miranda, J. Anderson, P. Bos, Opt. Eng. 43, No. 11, 2769-2774 (2004).
âThe geometrical optics approach for multidimensional liquid crystal cells,â G. Panasyuk, J. Kelly, P. Bos, E. Gartland, D. Allender, Liq. Cryst. 31, No. 11, 1503-1515 (2004).
âPoincare sphere analysis of reflective liquid crystal device,â Y. Zhang, B. Wang, D. Chung, P. Bos, Jpn. J. Appl. Phys., Part 1, v. 43 no. 10, 7125-7128 (2004).
âFast switching polymer stabilized splay cell (PSSC),â V. Sergan, X. Wang, P. Bos, G. Sharp, Mol. Cryst. Liq. Cryst. 410, 1015-1021 (2004).
âDefect-free bistable C1 surface stabilized ferroelectric liquid crystal display,â C. Wang, M. Wand, M. Handschy, P. Bos, Jpn. J. Appl. Phys. 43, 3479-3483 June (2004).
âGeneralized spectroscopic ellipsometry and Mueller-matrix study of twisted nematic and super twisted nematic liquid crystals,â J. Hilfiker, B. Johs, C. Herzinger, J. Elman, E. Montbach, D. Bryant, P. Bos, Thin Solid Films 455, 596-600 May 1, (2004).
âFinite-difference time-domain calculations of a liquid-crystal-based switchable Bragg grating,â B. Wang, X. Wang, P. Bos, J. Opt. Soc. Am. A 21, 1066-1072 June (2004).
âCompensating a twisted nematic liquid crystal display with matched wavelength dispersion retarders,â E. Montbach, P. Bos, W. Gambogi, Jpn. J. Appl. Phys. 43, 1376-1383 April (2004).
âComputing the liquid crystal director field in optical phased arrays,â G. Barrick, P. Bos, C. Titus, Opt. Eng. 43, 924-932 April (2004).
âFinite-difference time-domain optical calculations of polymer-liquid crystal composite electrodiffractive device,â B. Wang, D. Chung, P. Bos, Jpn. J. Appl. Phys. 43, 176-181 January (2004).
âLight propagation in variable-refractive-index materials with liquid-crystal-infiltrated microcavities,â B. Wang, P. Bos, C. Hoke, Journal of the Optical Society of America A: Optics and Image Science, and Vision. v. 20 no. 11, 2123-2130 November (2003).
âFast Q-tensor method for modeling the dynamics of defects in a liquid crystal director field,â G. Lee, P. Bos, S. Ahn, K. Kim, Phys. Rev. E., 67, 4 1, 417151-417157 April (2003).
âWide-angle achromatic prism beam steering for infrared countermeasure applications,â B. Duncan, P. Bos, V. Sergan, Optical Engineering, 42, 4, 1038-1047 April (2003).
âA defect free bistable C1 SSFLC device,â C. Wang, P. Bos, J. of Information Display, 4, 1, 1 (2003).
âSynthesis of a color image display using birefringent filters,â S. Saeed, P. Bos, Optical Engineering, 41, 1, 167-175 (2002).
âViewing angle performance of a polarization interference filter based passive matrix display,â S. Saeed, P. Bos, Jap. J. Appl. Phys., Part 1: Regular Papers and Short Notes and Review Papers, 41, 4, 2040-2045 (2002).
âLong term bistable twisted nematic liquid crystal display and its computer simulations,â B. Wang, J. Anderson, C. Hoke, D. Chung, P. Bos, Jap. J. Appl. Phys., Part 1: Regular Papers and Short Notes and Review Papers, 41, 5 A, 2939-2943 (2002).
âFast Q-tensor method for modeling liquid crystal director configurations with defects,â G. Lee, J. Anderson, P. Bos, Appl. Phys. Lett. 81, 21, 3951-3953, November (2002).
âInfluence of the polymer network on the switching behaviors in the polymer stabilized ferroelectric liquid crystals,â J. Pirs, P. Bos, R. Petkovsek, S. Kralj, S. Pirs, S. Zumer, T. Matuszczyk, Jap. J. Appl. Phys., Part 1: Regular Papers and Short Notes and Review Papers, 41, 10, 6011-6015, October (2002).
âMultispectrum, spatially addressable polarization interference filter,â S. Saeed, P. Bos, Journal of the Optical Society of America A: Optics and Image Science, and Vision, 19, 11, 2301-2312, November (2002).
âLowest energy layer structure for twist states SSFLC device,â C. Wang, S. Kumar, M. Wand, P. Bos, Ferroelectrics 278, 79 (2002).
âAsymmetric transmissive behavior of liquid crystal diffraction gratings,â C. Titus, J. Kelly, E. Gartland, S. Shiyanovskii, J. Anderson, P. Bos, Optics Letters, Vol 26, 1188 (2001).
&˛Ô˛ú˛őąč;âDesign optimized bistable twisted nematic liquid crystal display,â B. Wang, P. Bos, J. Appl. Phys. 90, 552-555 (2001).
"How to achieve zigzag free Sm-C* state with a low pretilt angle: A numerical calculation," C. Wang, R. Kurihara, P. Bos, S. Kobayashi, J. Appl. Phys. 90, 4452-4455 (2001).
"Computer simulation of the homeotropic to focal conic transition in cholesterics," J. Anderson, P. Watson, T. Ernst, P. Bos, Mol. Cryst. Liq. Cryst. 366, 909-918 (2001).
âA method of generating full color in a liquid crystal display using birefringent filters,â S. Saeed, P. Bos, Z. Li, Jpn. J. Appl. Phys. 40, 3266-3271 (2001).
âComputer simulation of the homeotropic to planar transition in cholesteric liquid crystals,â P. Watson, J. Anderson, V. Sergan, P. Bos, Liquid Crystals 28, 1-15 (2001).
âComparisons of the vector method and tensor method for simulating liquid crystal devices,â J. Anderson, P. Watson, P. Bos, Liquid Crystals 28, 109-115 (2001).
âStudy of relaxation in cholesteric liquid crystals after reduction of an electric field,â J. Anderson, P. Watson, P. Bos, Liquid Crystals 28, 945-968 (2001).
âTwist-energy-driven Helfrich modulations in cholesteric liquid crystals illustrated in the transient planar to planar transition,â P. Watson, J. Anderson, P. Bos, Phys. Rev. E (Part B), 62, 3719-3723 (2000).
âMultidimensional alignment structure for the liquid crystal director field,â C. Hoke, P. Bos, J. Appl. Phys. 88, 2302-2304 (2000).
âMethods and concerns of compensating in-plane switching liquid crystal displays,â J. Anderson, P. Bos, Jpn. J. Appl. Phys. 39, 6388-6392 (2000).
âPolarized infrared study of a polymer network deformation in a nematic liquid crystal host,â C. Hoke, J. Li, Y. Lin, L. Chien, P. Bos, S. Hudson, J. Koenig, Liq. Cryst., 27, 359-363, March (2000).
âComputer simulation evidence of the transient planar state during the homeotropic to focal conic transition in cholesteric liquid crystals,â J. Anderson, P. Watson, T. Ernst, P. Bos, Phys. Rev. E, 2000 3951-3960, April (2000).
âMechanism of relaxation from electric field induced homeotropic to planar texture in cholesteric liquid crystals,â V. Sergan, Y. Reznikov, J. Anderson, P. Watson, J. Ruth, P. Bos, Mol. Cryst. Liq. Cryst., 330, 1339 (1999).
âThe transition mechanism of the transient planar to planar director configuration change in cholesteric liquid crystal displays,â P. Watson, J. Anderson, V. Sergan, P. Bos, Liq. Cryst., 26, 1307-1314, September (1999).
âModulated structures with electric field controlled direction and periodicity in SmC* liquid crystals,â D. Subacius, D. Voloschenko, P. Bos, O. Lavrentovich, Liq. Cryst. 26, 295-298 (1999).
"Optical compensation of liquid crystal materials using negative birefringence compensation films," C. Hoke, H. Mori, P. Bos, Jpn. J. Appl. Phys. 38, L642-L645 (1999).
"Optical performance of the pi cell compensated with a negative birefringence films and an a-plate," H. Mori, P. Bos, Jpn. J. Appl. Phys. 38, 2837-2844 (1999).
"Characteristic times in the homeotropic to planar transition in cholesteric liquid crystals," P. Watson, V. Sergan, J. Anderson, J. Ruth, P. Bos, Liq. Cryst. 26, 731-736 (1999).
"Comparison of analytical calculations to finite-difference time-domain simulations of one-dimensional spatially varying anisotropic liquid crystal structures," C. Titus, P. Bos, J. Kelly, E. Gartland, Jr., Jpn. J. Appl. Phys. 38, 1488-1494 (1999).
"Multidimensional director modeling using the Q tensor representation," H. Mori, E. Gartland, Jr., J. Kelly, P. Bos, Jpn. J Appl. Phys. 38, 135-146 (1999).
"Possibility of stereoscopic displays by using a viewing angle dependence of twisted nematic liquid crystal cells," H. Okada, J. Chen, P. Bos, IEEE Trans. On Electron Devices 48, 1445-1452 (1998)
âPatterned alignment, liquid crystal diffractive spatial light modulators & devices,â C. Holton, P. Bos, M. Miller, W. Glenn, Proc. SPIE, 3292 (1998).
âIn-plane liquid crystal beam steering devices with a beam separation structure,â H. Okada, P. Bos, H. Onnagawa, Jpn. J. Appl. Phys. 37, 2576-2580 (1998).
âEffect of surface topography on defect formation in surface stabilized ferroelectric devices,â P. Watson, P. Bos, J. Pirs, Phys.Rev. E. 56, R3769-R3771 (1997).
âEfficient, polarization-independent, reflective liquid crystal phase grating,â C. Titus, P. Bos, Appl. Phys. Lett. 71, 2239-2241 (1997).
âCholesteric gratings with field-controlled period,â D. Subacius, S. Shiyanovskii, P. Bos, O. Lavrentovich, Appl. Phys. Lett. 71, 3323-3325 (1997).
âA simple multi-mode stereoscopic liquid crystal display,â J. Chen, K. Kim, N. Kim, J. Souk, P. Bos, S. Shin, Jpn. J. Appl. Phys. 36, L1685-L1688 (1997).
âSwitchable diffractive cholesteric gratings,â D.Subacius, P. Bos, O. Lavrentovich, Appl. Phys. Lett, 71, 1350-1372 (1997).
âThe effect of material parameters on the hysteresis of bistable STN displays,â J. Li, C. Hoke, P. Bos, Mol. Cryst. Liq. Cryst. 304, 113 (1997).
âThe investigation of domain instability in the four domain twisted nematic configurations.â J. Chen, J. Li, C. Hoke, D. Johnson, P. Bos, Mol.Cryst.Liq.Cryst. 302, 151 (1997).
âThe effect of polymer networks on the electro-distortional characteristics of nematic liquid crystals,â J. Li, J. Anderson, C. Hoke, T. Nose, P. Bos, Mol.Cryst.Liq.Cryst. 301, 261 (1997).
âEffect of low polymer content in a liquid crystal microlens,â T. Nose, S. Masuda, S. Sato, J. Li, L-C Chien, P. Bos, Optics Letters 22, 351 (1997).
âHigh efficiency light valve projectors and high efficiency laser light sources,â W. Glenn, C. Holton, G. Dixon, P. Bos, SMPTE Journal 106, 4, 210 (1997).
âThe high-field cured polymer networks in nematic liquid crystals,â J. Li, J. Anderson, C. Hoke, T. Nose, P. Bos, Jpn. J. Appl. Phys. 35, L1342 (1996).
âHigh-speed addressing of a 0-360 bistable twisted nematic liquid crystal display,â C. Hoke, J. Li, J. Kelly, P. Bos, Jpn. J. Appl. Phys. 36, L227 (1996).
âSuper-twisted nematic LCDs with multi-domain structures,â J. Li, E. Lee, H. Vithana, P. Bos, Jpn. J. Appl. Phys. 35, L1446 (1996).
âFour-domain twisted nematic liquid crystal display fabricated by reverse rubbing polyimide process,â J. Chen, P. Bos, D. Johnson, D. Bryant, S. Jamal, J. Kelly, J. Appl. Phys. 80, 4, 1985 (1996).
âA model of liquid crystal alignment by exposure to linearly polarized ultraviolet light,â J. Chen, D. Johnson, P. Bos, X. Wang, J. West, Phys. Rev. E., 54, 2, 599 (1996).
âPolymer stabilized STN devices,â D. Fredley, J. Li, B. Quinn, P. Bos, J. of SID, 4, No. 2, 89 (1996).
âRadially and azimuthally oriented liquid crystal alignment patterns fabricated by linearly polarized ultraviolet exposure process,â J. Chen, P. Bos, S. Sprunt, D. Johnson, Appl. Phys. Lett. 68, 885 (1996).
âOptimization of luminance for optical-mode-interference (OMI) displays,â J. Li, J. Kelly, C. Hoke, P. Bos, J. of SID, 4, 2, 95 (1996).
âStudies of bistability of highly twisted nematics,â J. Li, C. Hoke, P. Bos, Jpn. J. Appl. Phys. 35, L706 (1996).
âNearly homeotropic aligned four-domain liquid crystal display with wide viewing angle,â H. Vithana, D. Johnson, P. Bos, R. Herke, Y. Fung, S. Jamal, Jpn. J. Appl. Phys. 35, 2222 (1996).
âControlled tilted homeotropic alignment of liquid crytals for display applications,â H. Vithana, D. Johnson, P. Bos, Jpn. J. Appl. Phys. 35, L320, (1996).
âFour domain twisted nematic liquid crystal display fabricated by two alignment layers with low and high pretilt angles,â J. Chen, P. Bos, D. Johnson, J. Kelly, N. Kim, J. Crow, Jpn J. Appl. Phys. Part 2, Letters, 35, 5A, L558 (1996).
âAn optically active diffractive (OAD) device for a high efficiency diffractive light valve,â P. Bos, J. Chen, J. Doane, B. Smith, C. Holton, W. Glenn, J. of SID, 3/4, 195, (1995).
âSimple four-domain twisted nematic liquid crystal display,â J. Chen, P. Bos, D. Bryant, D. Johnson, S. Jamal, J. Kelly, Appl. Phys Lett. 67 (14) 2, 990, October (1995).
âAn electro-optically controlled liquid crystal diffraction grating,â J. Chen, P. Bos, H. Vithana, D. Johnson, Appl. Phys. Lett. 67 (18), 2588, 1995 (R).
âContrast and color uniformity optimization of an LCD pi cell pixel,â M. Flynn, P. Bos, Mol. Cryst. Liq. Cryst. 263, 377-387 (1995).
âDynamic drive for bistable reflective cholesteric displays: a rapid addressing scheme,â X. Huang, D. Yang, P. Bos, J. Doane. (R), J. of the SID, 3/4, 165 (1995).
âTime sequential stereoscopic displays: the contribution of phosphor persistence to the "Ghost" image intensity,â P. Bos, The Journal of Three Dimensional Images Vol 8, No 1, 69-72 (1994).
âField-sequential stereoscopic viewing systems using passive glasses,â P. Bos, T. Haven (J) Proc. of SID 30/1, 39 (1989).
âA method for director alignment of SmC* devices,â P. Bos, K. Koehler/Beran (R) Ferroelectrics, 85, 15 (1988).
âA full-color field sequential color display,â P. Bos, T. Buzak, R. Vatne (J) Proc. of the SID, 26, 157 (1985).
âThe ď°-cell , a fast liquid-crystal optical switching device,â P. Bos, K. Koehler/Beran (R), Mol. Cyst. Liq. Cryst. 113, 329 (1984).
âNew LC/CRT field sequential color display,â R. Vatne, P. Johnson, P. Bos, Proc. SID 25, 31 (1984)
âOptical bounce removal and turn-off time reduction in twisted nematic displays,â R. Hubbard, P. Bos (R), IEEE ED-28, 6, 723 (1981).
âRemoval of the optical bounce and turn-off time reduction in twisted nematic displays,â R. Hubbard, P. Bos, Proc. of the SID 22, 4, 297 (1981).
âDirect NMR observation of rotational freeze-out in the smectic-c phase,â D. Photinos, P. Bos, M. Neubert, J. Doane. (R) Phys. Rev. A 23 6, 3346 (1981).
âLiquid crystals as observed by NMR,â J. Doane, P. Bos, N. Vaz, A. Shetty. (R), Ferroelectrics, 24, 203 (1980).
âMolecular and relative segmental order in nematic and smectic C phases: a nuclear magnetic resonance study,â P. Bos, A. Shetty, J. Doane, M. Neubert. (R), J. Chem Phys. 73(2), 733 (1980).
âNMR measurement of biaxial molecular order in the smectic-c phase,â D. Photinos, P. Bos, J. Doane, M. Neubert. (R), Phys. Rev. A 20(5), 2203 (1979).
âNMR in spinning samples of biaxial liquid crystals,â P. Collings, D. Photinos, P. Bos, P. Ukleja, J. Doane. (R) Phys. Rev. Lett. B42(15), 996 (1979).
âMolecular order versus conformational change in the liquid crystal phases,â P. Bos, J. Doane, (R) Phys. Rev. Lett. 40 (15), 1030 (1978).
âMolecular orientational order and nmr in the uniaxial and biaxial phases,â P. Bos, J. Pirs, P. Ukleja, J. Doane, M. Neubert (R), Mol. Cryst. Liq. Cryst. 40, 59 (1977).
Invited Talks and lectures ( partial list of only most recent)
âA Simple Method to Reduce Accommodation Fatique in Virtual Reality and Augmented Reality Displaysâ; INVITED PAPER Bos, P.J.; Li,L.; Bryant.D.; Jamali, A.; Bhowmik, A.; Society for Information Display Annual Symposium , May 22-27, 2016, San Francisco, CA.
âAzo Dye Photoalignment Layers for Liquid Crystals Using a Thin Surface-Localized Polymer-Stabilization Layerâ 1rst International Conference on Photoalignment and Photopatterning in Soft Materials 29Nov â 2 Dec 2014, Hong Kong
âLiquid Crystal Lenses for 3D Displaysâ Bay Area Chapter of the Society for Information display ; Jan 15, 2014
âLiquid Crystal technology for 3D displaysâ; P.Bos; H.Cheng; Y. Zhang, A. Bhowmik; 2013 International Symposium for Information Display, Vancouver, Canada; May 22 2013
âLiquid Crystal Based Optical Wavefront Controlâ, Liquid Crystals for Photonics, Hong Kong University of Science and Technology, Hong Kong, 12-9-10
âAlignment of SmC* Liquid Crystals for Device Applicationsâ Ben Sturgeon Lecture, The 25th British Liquid Crystal Society Annual Conference, Nottingham University, 18-20 April, 2011
Conference Articles:
â Gao, Kun; Bhowmik, Achintya; McGinty, Colin; et al. Edited by: Khoo, IC
Conference: Conference on Liquid Crystals XX Location: San Diego, CA Date: AUG 28-30, 2016 Sponsor(s): SPIE LIQUID CRYSTALS XX Book Series: Proceedings of SPIE Volume: 9940 Article Number: UNSP 99400X Published: 2016
â Clark, H. R., Jr.; Bozler, C. O.; Berry, S. R.; et al Edited by: LeVan, PD; Sood, AK; Wijewarnasuriya, P; et al.
Conference: Conference on Infrared Sensors, Devices, and Applications VI Location: San Diego, CA Date: AUG 31-SEP 01, 2016
Sponsor(s): SPIE INFRARED SENSORS, DEVICES, AND APPLICATIONS VI Book Series: Proceedings of SPIE Volume: 9974 Article Number: UNSP 99740E Published: 2016
âA Simple Method to Reduce Accommodation Fatique in Virtual Reality and Augmented Reality Displaysâ; INVITED PAPER Bos, P.J.; Li,L.; Bryant.D.; Jamali, A.; Bhowmik, A.;
Conference Digest of the Society for Information Display Annual Symposium , p 354 ( 2016)
â Ultra-Compact Non-Mechanica Zoom Lens for Enhanced Machine Vision and Computer Input Applicationsâ K. Gao, H-H Cheng, A. Bhowmik, C.McGinty, P.Bos Conference Digest of the Society for Information Display Annual Symposium , p 911 ( 2015)
âReactive Mesogen Stabilized Azodye Alignment for High Contrast DisplaysâV. Finnemeyer, D. Bryant, P.Bos. Conference Digest of the Society for Information Display Annual Symposium , p 991 ( 2015)
&˛Ô˛ú˛őąč;â Maximization of Electro-Optical Performances in the Fringe-Field Switching Liquid Crystal Mode using a Liquid Crystal with Negative Dielectric AnisotropyâJ-H Kim, K-H Kim, H-S Choi, J-H Jung, B-H Lee, Y. Kwon, G. Murali, Y-J Lim, S-H Lee, P.J. Bos Conference Digest of the Society for Information Display Annual Symposium , p 1570 ( 2015)
âLarge angle Image Steering Using a Liquid Crystal Deviceâ H-H Cheng, A. Bhowmik,P.Bos Conference Digest of the Society for Information Display Annual Symposium , p 739 ( 2014)
âDual pi-cell Fast Response LC Displayâ Cheng,H; Bhowmik,A.; Bos, P.; SID Symposium Digest of Technical Papers ISSN 2154-6738 p439 Vancouver, Canada; May 21-24 2013
Lu Lu,, Vassili Sergan, Tony Van Heugten, Dwight Duston, Achintya Bhowmik, Philip Bos "Tunable Polymer Localized Liquid Crystal Lenses for Autostereoscopic 3D Displaysâ, SID International Symposium , Boston, MA, June 6, 2012
Liwei Li, Doug Bryant, Tony Van Heugten, Dwight Duston, Philip J. Bos, âOverview of factors Affecting Lens Performance for 3D DisplaysâSID International Symposium , Boston, MA, June 6, 2012
Lu Lu, Lei Shi, Phil Bos, Tony Van Heugten, Dwight Duston., "Comparisons between Liquid Crystals Defractive Lens and Diffractive Lens for Optical Correction Application in 3D Displaysâ, SID Symposium Digest of Technical Papers Volume 42, Issue 1, pp. 171-174
Lu Lu; Lei Shi; Dwight Duston; Tony Van Heugten; Philip J. Bos, "The effect on Strehl ratio from thickness variations in liquid crystal diffractive lenses," Proceedings of SPIE Vol. 7944, 79440Z (2011)
L. Shi, L. Li, D. Bryant, D. Duston, and P. J. Bos, "Modeling and Design of a Tunable Refractive Lens Based on Liquid Crystals," in Frontiers in Optics, OSA Technical Digest (CD) (Optical Society of America, 2010), paper FThU2
Liwei Li, Lei Shi, Doug Bryant, Tony Van Heugten, Dwight Duston, Philip J. Bos, 'Modeling and design of a tunable refractive lens based on liquid crystals' in Proceedings of the SPIE, Volume 7944, pp. 79440S-79440S-8 (2011).Optoelectronic Interconnects and Component Integration XI. Edited by Glebov, Alexei L.; Chen, Ray T.
Liwei Li, Lei Shi, Doug Bryant, Tony Van Heugten, Dwight Duston, Philip J. Bos, 'Design and modeling of a refractive liquid crystal lens for tunable optical correction in 3-D stereoscopic displays', SID Symposium Digest of Technical Papers Volume 42, Issue 1, pp.9-12
Lu Lu,, Vassili Sergan, Tony Van Heugten, Dwight Duston, Achintya Bhowmik, Philip Bos "Tunable Polymer Localized Liquid Crystal Lenses for Autostereoscopic 3D Displaysâ, SID Symposium Digest of Technical Papers Volume 43, Issue 1, pp. 383
Liwei Li, Doug Bryant, Tony Van Heugten, Dwight Duston, Philip J. Bos, âOverview of factors Affecting Lens Performance for 3D Displaysâ SID Symposium Digest of Technical Papers Volume 43, Issue 1, pp.379
Lu, Lu; Alagh, Aman; Bos, Philip. J. ââ LIQUID CRYSTALS XV Book Series: Proceedings of SPIE Volume: 8114 Article Number: 811416 DOI: 10.1117/12.893608 Published: 2011
â5° SiOx Deposition Alignment: A Possible Solution for Low-Power LCDs Using Low-Frequency Applied Voltage Waveformsâ Y Huang. Philip Bos, Achintya Bhowmik,; Society for Information Display 2010 International Symposium, Digest of Technical Papers, XXXXI, p 587,
âThe Use of Fluorinated Alignment Layer to Reduce Image Retention in Liquid Crystal Displaysâ Lu,Lu; Ke Zhang; Robert Twieg; Philip Bos; Brian Auman; Achintya Bhowmik; Society for Information Display 2010 International Symposium, Digest of Technical Papers, XXXXI, p 583,
âStabilization of the Symmetric Splay State and Warm up Time Reduction in Pi-Cell Devicesâ B.Wang, Y. Zhang, Y-K Jang, P.J.Bos Conference Record of the 28th International Display Research Conference p119 ( 2008)
âLiquid Crystal Etalon Device for Reflective Displaysâ Mike Dorjgotov, Philip Bos, Society for Information Display 2008 International Symposium, Digest of Technical Papers, XXXIX, p568-571
â Mono domain alignment of the SmC liquid crystalline phase for analog display applicationsâ Mitya Reznikov, Bentley Wall, Mark Handschy, Philip Bos, Society for Information Display 2008 International Symposium, Digest of Technical Papers, XXXIX, p 1811-1814,
âDynamic simulation of Pi-cell liquid crystal displays with transverse fieldâ Yi Huang, K.H. Kim, J.K Jang, H.S Kim and Philip Bos, , Society for Information Display 2008 International Symposium, Digest of Technical Papers, XXXIX, p1865-1869,
âEffect of the surface alignment layer on analog switching of ferroelectric liquid crystalsâ Michael O'Callaghan, Mitya Reznikov, Philip J. Bos, , Society for Information Display 2007 International Symposium, Digest of Technical Papers, XXXVIII, 629-32 Long Beach, CA, May 22, 2007.
âMultireflection effects of the compensated black states in liquid crystal displaysâ Yong-Kyu Jang, Philip Bos, , Society for Information Display 2007 International Symposium, Digest of Technical Papers, XXXVIII, 760-63, Long Beach, CA, May 22, 2007.
âAnalyses of the white state viewing angle properties in liquid crystal displaysâ Yong-Kyu Jang, Philip Bos, , Society for Information Display 2007 International Symposium, Digest of Technical Papers, XXXVIII, 1179-82, Long Beach, CA, May 22, 2007.
âLiquid-crystal etalon device for high-efficiency field-sequential displayâEnkh-Amgalan Dorjgotov, Philip Bos, , Society for Information Display 2007 International Symposium, Digest of Technical Papers, XXXVIII, 1745-48, Long Beach, CA, May 22, 2007.
â Evaluation of a high-throughput liquid crystal tunable filter for Raman chemical imaging of threat matererialsâ Xinghua Wang, Thomas Voigt, Philip Bos, Matthew Nelson, Patrick Treado, SPIE Proceedings Volume 6378 of Conference on Chemical and Biological Sensors for Industrial and Environmental Monitoring II, October 25, 2006.
âImproved Vertical Alignment of Liquid Crystals with a Large Negative Dielectric Anisotropy,âCheng C., Bos, P.J., Anderson, J.E., Distinguished Student Paper: SID Intl. Symp. Digest of Tech Papers, XXXVII, Book II, 1439. (2006).
âLiquid crystal designs for high-contrast field sequential color liquid crystal on silicon (LCoS) microdisplays,â Anderson, J., Cheng, C., Bos, P. J., (invited paper), SPIE. 5741, No. 1, 23-30, (2005).
âTwo-dimensional dynamic modeling of splay to bend transition in pi cell or BTN device at high voltage,â Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1782 (2005).
âFast VAN LCoS Microdisplay,â J. Anderson, C. Cheng, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1366 (2005).
âReflective Polarization Independent LC Phase Modulator with Polymer Wall,â Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1178 (2005).
âModeling of optical aberration correction using a liquid crystal deviceâ X. Wang, B. Wang, P.F. McManamon et el.; Advanced Wavefront Control: Methods, Devices and Applications III (Vol 5894) August 2005
âSwitchable optical phased prism arrays for beam steering,â J. Shi, P. Bos, B. Winker, P. McManamon, SPIE 5553, No. 1, 102-111 (2004).
âSpatial resolution limitation of liquid crystal spatial light modulator,â X. Wang, B. Wang, P. McManamon, III, J. Pouch, F. Miranda, J. Anderson, P. Bos, Advanced Wavefront Control: Methods, Devices and Applications II, 2-3 (2004).
âHolographic three-dimensional displays with liquid crystal on silicon spatial light modulator,â A. Michalkiewicz, M. Kujawinska, T. Kozacki, X. Wang, P. Bos, SPIE 5531, No. 1, 85-94, (2004).
â2-D liquid crystal optical, phased array,â X. Wang, B. Wang, P. Bos, J. Anderson, P. McManamon, 2004 IEEE Aerospace Conference Proceedings, Vol. 12, 6-13, (2004).
âActive microinterferometer with liquid crystal on silicon (LCOS) for extended range static and dynamic micromembrane measurement,â J. Kacperski, M. Kujawinska, X. Wang, P. Bos, SPIE 5532, No. 1, 37-43 (2004).
âLaser beam steering/shaping with LCoS 2-D OPA for free space optical communication,â X. Wang, B. Wang, P. McManamon, J. Pouch, F. Miranda, J. Anderson, P. Bos, SPIE 5403, No. 1, 782-791 (2004).
âThe Effect of Layer Spacing Changes in the SmA Phase on Defects Observed in SSFLC Devices,â C. Wang., P. Bos, S. Kumar, M. Wand, M. Handschy, SID Asia Display/IMIDâ04 Digest Tech. Papers, 193 (2004).
âStudy of switchable liquid crystal polymer grating by finite-different time-domain calculation,â B. Wang, X. Wang, P. Bos, SPIE Proc., 5213 104-110 (2004).
âThe geometrical optics approach in liquid crystal cells with two- and three-dimensional director variations,â G. Panasyuk, J. Kelly, P. Bos, E. Gartland, D. Allender, SPIE Proc., 5289, 119-131 (2004).
âLimitation of liquid crystal on silicon spatial light modulator for holographic three-dimensional displays,â X. Wang, B. Wang, P. Bos, J. Anderson, M. Kujawinska, J. Pouch, F. Miranda, SID International Symposium Digest of Technical Papers, XXXV, Book II, 1522-1525, May (2004).
âControl of wavelength dispersion in form birefringent retarders for liquid crystal displays,â E. Montbach, P. Bos, SID International Symposium Digest of Technical Papers, XXXV, Book II, 1312-1315, May (2004).
âPoincare sphere analysis of LCOS E-O effects,â D. Chung, A. Grunnet-Jepsen, SID International Symposium Digest of Technical Papers, XXXV, Book II, 994-997 May (2004).
âLiquid crystal on silicon (lcos) wavefront corrector and beam steerer,â X. Wang, B. Wang, J. Pouch, F. Miranda, M. Fisch, J. Anderson, V. Sergan, P. Bos, SPIE Proc 5162 139-146 (2003).
âEliminating layer undulation textures in SSFLC devices,â C. Wang, P. Bos, S. Kumar, M.Wand, M. Handschy, SID Intnl. Digest of Tech. Papers 34, 608-611 (2003).
âDesign of switchable grating for color control elementâ B. Wang, P. Bos, SID Intnl. Digest of Tech. Papers 34, 700-703 (2003).
â2-D modeling of the effect of electrode topography and interpixel gap on LCOS devices,â Y. Zhang, P. Bos, D. Chung, SID Intnl. Digest of Tech. Papers 34, 1382 (2003).
âWarm-up of a pi-cell liquid crystal device,â G. Lee, P. Bos, S. Ahn, K-J Lee, Proceedings of the 1rst International Meeting of Information Display, Daegu Korea, 1096 (2003) (Invited).
âDiffraction efficiency of thin film holographic beam steering devices,â C. Titus, J. Pouch, H. Nguyen, F. Miranda, P. Bos, Proc. SPIE, 4825, 177-188 (2002).
âLCD optical light shutters for eye protection devices,â J. Pirs, S. Pirs, R. Petkovsek, M. Bazec, P. Bos, SID Conference Record of the International Display Research Conference, 589-593 (2002).
âWide angle beam steering for infrared countermeasures applications,â J. Gibson, B. Duncan, P. Bos, V. Sergan, Proc. SPIE, 4723, 100-111 (2002).
âA defect free bistable C1 SSFLC display,â C. Wang, P. Bos, M. Wand, M. Handschy, SID Intnl. Digest Tech. Papers 33, 514-517 (2002).
âModeling method for a single polarizer reflective STN-LCDs containing either a mirror or holographic slanted reflector,â E. Montbach, P. Bos, SID Intnl. Digest Tech. Papers 33, 874-877 (2002).
&˛Ô˛ú˛őąč;âA new type of liquid crystal diffractive light valve with very small pixel size,â B. Wang, P. Bos, D. Chung, SID Intnl. Digest Tech. Papers 33, 972-965 (2002).
âModeling volume holograms using berreman 4*4 method,â E. Bramley, P. Bos, Proc. SPIE 4296, 282-291 (2001).
âDirector field transitions in bistable twisted nematic devices,â B. Wang, J. Anderson, C. Hoke, P. Bos, IMID â01 Digest, 54-57 (2001).
âHolographic color filters for reflective LCDs,â W. Gambogi, T. Felder, S. Mackara, P. Bos, D. Bryant, E. Bramley, Proc. SPIE 4 (2001).
&˛Ô˛ú˛őąč;âConsiderations of the d/p Ratio in the design of a bistable twist nematic display,â B. Wang P. Bos, SID Intl. Digest Tech. Papers 32, 232-235 (2001).
âNumerical calculation using low azimuthal anchoring to achieve zigzag free SmC* state with a low pretilt angle,â C. Wang, R. Kurihara, P. Bos, S. Kobayashi, SID Intl. Digest Tech. Papers 32, 834-837 (2001).
âOptimization of reflective liquid crystal display with a holographic slanted reflector using the berreman 4´4 method,â E. Bramley, P. Bos, SID Intl. Digest Tech. Papers 32, 878-881 (2001).
âA color high brightness passive matrix display,â S. Saeed, P. Bos, Z. Li, SID Intl. Digest Tech. Papers 32, 1062-1065 (2001).
âCholesteric color filter with polymer walls,â A. Tereshchenko, Y. Reznikov, A. Buluy, P. Bos, V. Sergan, Proc. 10th Intl. Display Research Conference, 249-252 (2000).
"A method of generating full color LCD using birefringent filters in a stacked design," S. Saeed, P. Bos, Z. Li, SID Digest XXXI, 830-833 (2000).
"Two crossed A-plates as an alternative to a negative C-plate," V. Sergan, P. Bos, G. Sharp, SID Digest XXXI, 838-841 (2000).
"Significant speed and stability increases in multi-dimensional director simulations," J. Anderson, C. Titus, P. Watson, P. Bos, SID Digest XXXI, 906-909 (2000).
"Lyotropic thin film polarizers," Y. Bobrov, C. Cobb, P. Lazarev, P. Bos, D. Bryant, H.Wonderly, SID Digest XXXI, 1102-1105 (2000).
"Status and trends in nematic bistable liquid crystal displays," P. Bos, P. Watson, J. Anderson, V. Sergan, C. Hoke, Proceedings of The 19th International Display Research Conference, 397 (1999). Invited
"Effects of pretilt angle on electro-optical properties of Pi-cell LCDs," X.-D. Mi, M. Xu, D.-K. Yang, P. Bos, SID Digest XXX, 24-27 (1999).
"Shortcomings of the Q tensor method for modeling liquid-crystal devices," J. Anderson, P. Watson, P. Bos, SID Digest XXX, 198-201 (1999).
"Two-dimensional optical simulation tool for use in microdisplay analysis," C. Titus, P. Bos, J. Kelly, SID Digest XXX, 624-627 (1999).
"Three-dimensional modeling of ridge-fringe-field LCDs," J. Anderson, P. Bos, C. Cai, A. Lien, SID Digest XXX, 628-631 (1999).
"The investigation of undertwist defect near the threshold in STN-LCDs," S. Li, P. Bos, SID Digest XXX, 640-643 (1999).
"Optimization of bend cells for field-sequential-color microdisplay applications," P. Watson, P. Bos, J. Gandhi, Y. Ji, M. Stefanov, SID Digest XXX, 994-997 (1999).
"Long time scale relaxation of the homeotropic to planar transition of short pitch cholesteric materials," P. Watson, V. Sergan, J. Anderson, J. Ruth, P. Bos, Proc. of the 18th International Display Research Conference, 291-294 (1998). Invited
"Reflective CMOS liquid crystal display design considerations," Y. Ji, M. Stefanov, W. Folks, P. Bos, Proc. of the 18th International Display Research Conference, 419-422 (1998).
"Amorphous silicon thin-film transistor active-matrix reflective cholesteric liquid crystal display," J. Nahm, T. Goda, B. Min, T. Chou, J. Kanicki, X. Huang, N. Miller, V. Sergan, P. Bos, J. Doane, Proc. of the 18th International Display Research Conference, 979-982 (1998).
âCholesteric diffraction devices with a field-controlled grating vector,â S. Shiyanovskii, D. Subacius, D. Voloschenko, P. Bos, O. Lavrentovich, Proc. of the SPIE San Diego CA (1998).
"Defects in the p cell with striped electrodes," H. Mori, E. Gartland, J. Kelly, P. Bos, Proc. 5th Intl. Display Workshop, 77-80 (1998).
"Modeling of polymer stabilized liquid crystals," C. Hoke, F. Xu, P. Bos, Proc. 5th Intl. Display Workshop, 101-104 (1998).
"A multi-dimensional alignment (MDA) structure and its application for the stabilization of the bistable twist cell," C. Hoke, P. Bos, Proc. 5th Intl. Display Workshop, 201-204 (1998). Invited
"Poincare sphere analysis on the optic Proc. Asia Display 98, pp. 419-422 (1998). al behavior of a discotic negative birefreince film," H. Mori, P. Bos, Proc. 5th Intl. Display Workshop, 243-246 (1998).
âVery high pretilt alignment and its application in Pi-cell LCDs,â M. Xu, D. Yang, P. Bos, X. Jin, F. Harris, S. Cheng, SID 98 Digest XXIX, 139-142 (1998).
âOptimum film compensation modes for TN and VA LCDs,â J. Chen, K. Kim, J. Jyu, J. Souk, J. Kelly, P. Bos, SID 98 Digest XXIX, 315-318 (1998).
âA fast frame-rate bistable cholesteric reflective display,â J. Anderson, P. Watson, J. Ruth, V. Sergan, P. Bos, SID 98 Digest XXIX, 806-809 (1998).
âDesigning concepts of the discotic negative birefringence compensation films,â H. Mori, P. Bos, SID 98 Digest XXIX, 830-833 (1998).
âA bistable twist cell exhibiting long-term bistability suitable for page-sized displays,â C. Hoke, P. Bos, SID 98 Digest XXIX, 854-857 (1998).
âA study of the dynamics of reflection color, helical axis orientation, and domain size in cholesteric LCDs,â P. Watson, V. Sergan, J. Anderson, J. Ruth, P. Bos, SID 98 Digest XXIX, 905-908 (1998).
âApplication of a negative birefringence film to various LCD modes,â H. Mori, P. Bos, IDRC, 17 M88 (1997). Invited
âAn ultra wide viewing angle STN-LCD with a negative birefringence compensation film,â C. Hoke, H. Mori, P. Bos, IDRC, 17 21(1997).
âReflective liquid crystal displays,â J. Ruth, R. Hewitt, P. Bos, Digest of the Flat Panel Display Strategic Forum and Technical Symposium. Invited
âThe effect of material constants on the long term stability of the bistable twist cell,â C. Hoke, P. Bos, IDRC 17, 85 (1997).
âElectric field effects and defects in layered liquid crystals,â O. Lavrentovich, D. Subacius, P. Bos, S. Shiyanovskii, Proc. Fourth Intl Display Workshop, 29-32 (1997).
âMatrix addressing of a 0-360 degree bistable twist cell,â C. Hoke, J. Kelly, J. Li, P. Bos, Society for Information Display Digest of Technical Papers 28, 29 (1997).
âBrightness optimization of D-STN LCDs using the traveling wave compensator,â J. Anderson, J. Li, P. Bos, R. Culter, K. Kongslie, A. Gard, Society for Information Display Digest of Technical Papers 28, 671 (1997).
âEffects of surface topography on formation of zig-zag defects in SSFLC devices,â P. Watson, P. Bos, J. Pirs, Society for Information Display Digest of Technical Papers 28, 743 (1997).
âEfficient polarization-independent reflective liquid crystal phase gratings,â C. Titus, P. Bos, C. Holton, W. Glenn, Society for Information Display Digest of Technical Papers 28, 769 (1997).
âOptical simulation of electro-optical performance of low delta- and multi-domain tn displays,â J. Chen, P. Bos, J. Kelly, N. Kim, S. Shin, Society for Information Display Digest of Technical Papers 28, 937 (1997).
&˛Ô˛ú˛őąč;âA four-domain twisted-nematic display stabilized by polymer networks,â J. Li, J. Chen, P. Bos, IDRC 16, 460 (1996).
âFour-domain TN-LCD fabricated by two alignment layers with low and high pretilt angle,â J. Chen, P. Bos, D. Johnson, J. Kelly, N. Kim, J. Crow, Society for Information Display Digest of Technical Papers 28, 650 (1997).
âConfirmation on mechanism of liquid crystal alignment by exposure to linearly polarized ultraviolet light,â J. Chen, D. Johnson, X. Wang, J. L. West, Society for Information Display Digest of Technical Papers 27, 634 (1996).
âCharacterization of the helical-axes distribution in reflective cholesteric LCDs,â A. Kahn, X. Huang, S. Stefanov, P. Bos, D. Davis, B. Tahari, J. Ruth, Society for Information Display Digest of Technical Papers 27, 607 (1996).
âPolymer walls in higher-polymer-content bistable reflective cholesteric displays,â Y. Ji, J. Francl, W. Fritz, P. Bos, J. West, Society for Information Display Digest of Technical Papers 27, 611 (1996).
âA bistable LCD using polymer stabilization,â J. Li, C. Hoke, D. Fredley, P. Bos, Society for Information Display Digest of Technical Papers 27, 265 (1996).
âPolymer stabilized âUp-Downâ bistable devices, J. Li, C. Hoke, P. Bos, IDRC 16, p--- (1996) Invited
âOptimization of OMI displays using polymer stabilization,â J. Li, J. Kelly, C. Hoke, P. Bos, IDRC 15, 252(1995).
âAn optically active diffractive device for a high-efficiency light valve,â P. Bos, J. Chen, J. W. Doane, B. Smith, C. Holton, W. Glenn. (J) Society for Information Display Digest of Technical Papers, 26, 601 (1995).
âA well controlled tilted homeotropic alignment method and a vertically aligned four domain LCD fabricated by this technique,â H. Vithana, Y. Fung, S. Jamal, R. Herke, P. Bos, D. Johnson. (J) Society for Information Display Digest of Technical Papers, 26, 873 (1995).
âFour domain TN-LCD fabricated by reverse rubbing or double evaporation,â J. Chen, P. Bos, D. Bryant, D. Johnson, S. Jamal, J. Kelly, Society for Information Display Digest of Technical Papers, 26, 865 (1995). (J)
âViewing angle and color uniformity optimization of the pi cell,â M. Flynn, P. Bos, Society for Information Display Digest of Technical Papers, 26, 801 (1995). (J)
âWide viewing angle liquid crystal electro-optical effects for AMLCDs,â P. Bos, J. Chen, H. Vithana, D. Johnson, Asia Display, IDW â95, Proceedings of the 2nd international display workshops, Vol. 2, AL-7, 27(1995). Invited.
âInvestigation of the mechanism of the surface induced alignment of liquid crystals by linearly polymerized photopolymers,â J. Chen, B. Cull, P. Bos, D. Johnson, M. Schadt., Society for Information Display Digest of Technical Papers, 26, 528 (1995). (J)
âDynamic drive for bistable reflective cholesteric displays: a rapid addressing scheme,â X. Huang, D. Yang, P. Bos, J. Doane, Society for Information Display Digest of Technical Papers, 26, (1995). (J)
âPassive optical phase retarders for liquid crystal displays,â (Invited lecture) P. Bos., IDRC 14, 118 (1994). Invited
âPolymer stabilized SBE devices,â D. Fredley, B. Quinn, P. Bos, IDRC 14, 480 (1994). (J)
âA synchronously strobed backlight for improved video-rate STN performance,â K. Kongslie, R. Culter, P. Bos, SID International Symposium Digest of Technical Papers 25 155 (1994). (J)
âThe traveling wave compensator: a new method for high contrast video-rate passive matrix displays,â R. Culter, K. Kongslie, P. Bos, Society for Information Display Digest of Technical Papers, 25, 159 (1994). (J)
âA low threshold voltage polymer network TN device,â P. Bos, J. Rahman, J. Doane, SID Digest of Technical Papers, 24, 877 (1993). (J)
âAn optically "self-compensating" electro-optical effect with wide angle of view,â P. Bos, J. Rahman, SID Digest of Technical Papers, 24, 273 (1993), (J)
âAn enhanced chevron ferroelectric SSFLC display,â P. Bos, IDRC 12, 523 (1992). (J)
âHigh performance 3D viewing systems using passive glasses,â P. Bos, T. Haven, SID Digest of Technical Papers 450 (1988). (J)
âA unique active contrast-enhancement filter using liquid-crystal pi-cell technology,â K. Koehler/Beran, P. Bos, SID Digest of Technical Papers, 17, 436 (1986). (J)
âA full-color field-sequential color display,â P. Bos, T. Buzak, R.Vatne, IDRC, 4, 7 (1984).
âDesign considerations for the pi-cell, a fast electro-optical switch,â P. Bos, K. Koelher/Beran, P. Johnson, IDRC 3 â (1983). (J)
âA LC/CRT field-sequential color display,â R. Vatne, P. Johnson, P. Bos, Society for Information Display Digest of Technical Papers, 14, 28 (1983). (J)
âA liquid crystal optical switching device (ď° - cell ),â P. Bos, P. Johnson, R. Kohler/Beran, Society for Information Display Digest of Technical Papers, 14, 30 (1983).
Presentations (without published text)
Lei Shi, Paul McManamon, Philip Bos, âA Tunable Liquid Crystal Beam Steering Device Based on a Gradient in the Pancharatnam Phaseâ Gordon Conference on Liquid Crystals, New London NH , Jun 14-19, 2009
Mitya Reznikov, Bentley Wall, Mark Handschy, Philip Bos âMonodomain alignment of the smectic A phase from the isotropic phaseâ 2008 International Liquid Crystal Conference, Jeju Korea, June 29-July 4 2008
Enkh-Amgalan Dorjgotov, Achintya Bhowmik, Philip Bos âPolarization Independent LC Etalon and Low Power Projection Displayâ Gordon Conference on Liquid Crystals, New London, NH, June 14-19, 2009
K Zhang, Na Liu, Robert Twieg, Philip Bos, âPretilt Study of Novel Double Layer Alignment Filmsâ 2008 International Liquid Crystal Conference, Jeju Korea, June 29-July 4 2008
&˛Ô˛ú˛őąč;âAnchoring Transitions of Liquid Crystals on SiOx, C.Chen, J. Anderson, P. Bos, Gordon Research Conference on Liquid Crystals Colby-Sawyer College, June 10-17 (2007)
âPhoto-patterned stressed liquid crystal prisms and lensesâ G. Zhang, J. West, K. Zhang, X. Wang, P. Bos, A. Glushchenko, , ILCS Conference, Keystone, Colorado, July 2-7, 2006.
âMulti-reflection effects in the black state of a LCDâ Y.K. Jang, P. Bos, , ILCS Conference, Keystone, Colorado, July 2-7, 2006.
âThermal desorption of the surface monolayerâ M. Reznikov, C. Chen, A. Nych, V. Nazarenko. M. OâCallaghan, P. Bos, , ILCS Conference, Keystone, Colorado, July 2-7, 2006.
âMethod to obtain large negative dielectric anisotropy compatible with homeotropic alignmentâ C. Chen, J. Anderson, P. Bos, , ILCS Conference, Keystone, Colorado, July 2-7, 2006.
âTwo dimensional dynamic modeling of the splay to bend transitionâ Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, , ILCS Conference, Keystone, Colorado, July 2-7, 2006.
âElectric Field Induced Splay to Bend Transitionâ G.D.Lee, P.J. Bos Gordon Research Conference on Liquid Crystals Colby-Sawyer College, June (2005)
âThe effect of layer spacing changes in the sma phase on defects observed in SSFLC devices,â C. Wang, P. Bos, S. Kumar, M. Wand, M. Handschy, SID Asia Display/IMIDâ04, Daegu, Korea, August 23-27 (2004).
âSpatial resolution limitation of liquid crystal spatial light modulator,â X. Wang, B. Wang, P. McManamon, J. Pouch, F. Miranda, J. Anderson, P. Bos, SPIE Annual Meeting, Denver Colorado, August 2-4 (2004).
âSwitchable optical phased prism arrays for beam steering,â J. Shi, P. Bos, B. Winker, P. McManamon, SPIE Annual Meeting, Denver, Colorado, August 2-4 (2004).
â2-D liquid crystal optical phased array,â X. Wang, B. Wang, P. Bos, J. Anderson, P. McManamon, 2004 IEEE Aerospace Conference, Big Sky, Montana, March 6-13 (2004).
âHolographic three-dimensional displays with liquid crystal on silicon spatial light modulator,â A. Michalkiewicz, M. Kujawinska, T. Kozacki, X. Wang, P. Bos, SPIE Annual Meeting, Denver, Colorado, August 2-4, (2004).
âActive microinterferometer with liquid crystal on silicon (LCOS) for extended range static and dynamic micromembrane measurement,â J. Kacperski, M. Kujawinska, X. Wang, P. Bos, SPIE Annual Meeting, Denver, Colorado, August 2-4 (2004).
âLaser beam steering/shaping with LCoS 2-D OPA for free space optical communication,â X. Wang, B. Wang, P. McManamon, J. Pouch, F. Miranda, J. Anderson, P. Bos, SPIE Conference on Sensors Command, Control, and Intelligence, Orlando, FL, April 12 (2004).
âReflective polarization independent LC phase modulator with polymer wall,â Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1178 (2005).
âFast VAN LCoS microdisplayâ J. Anderson, C. Cheng, P. Bos, SID Intl. Symp., Boston, MA, May 24-26, (2005).
âTwo-dimensional dynamic modeling of splay to bend transition in pi cell or BTN device at high voltage,â Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp., Boston, MA, May 24-26 (2005).
âLight propagation in two dimensional liquid crystal devices with periodic structures near the wavelength of light,â B. Wang , P. Bos, 20th International Liquid Crystal Conference Ljubljana, Slovenia, July 4 â 9 (2004).
â A fast Q-tensor method for modeling the dynamics of defects in a liquid crystal director field,â P. Bos, G. Lee, S. Ahn, K. Kim, 20th International Liquid Crystal Conference, Ljubljana, Slovenia, July 4 â 9 (2004).
âTemperature dependence of the smectic-a layer spacing and its effect on layer defects in the SmC* phase,â C.Wang, P. Bos, S. Kumar, M. Wand, M. Handschy, Tohoku University 21st Century COE Program, Sendai, Japan, Jan 28-30 (2004). Invited
âThe electric field induced splay to bend transition in a cell with patterned electrodes,â G. Lee, P. Bos, Gordon Research Conference on Liquid Crystals Colby-Sawyer College, June 15-20 (2003).
âFast switching polymer stabilized splay cell (PSSC),â V. Sergan, X. Wang, P. Bos, G. Sharp, 19th International Liquid Crystal Conference, Edinburgh Scotland, June 30-July 5 (2002).
âLight propagation in liquid crystalline blazed gratings,â C. Titus, B. Wang, J. Shi, P. Bos, 19th International Liquid Crystal Conference, Edinburgh, Scotland, June 30-July 5 (2002).
âDiffraction efficiency of thin film holographic beam steering devices,â C. Titus, J. Pouch, H. Nguyen, F. Miranda, P. Bos, Annual meeting of the International Society for Optical Engineering, Seattle, Washington, July 8-9 (2002).
âLCD optical light shutters for eye protection devices,â J. Pirs, S. Pirs, R. Petkovsek, M. Bazec, P. Bos, 2002 International Display Research Conference, Nice, France, October 1-4 (2002).
âLiquid crystal modes for wide viewing angle,â Applications Tutorial, SID, Boston, MA, May 21-23 (2002).
âModeling method for a single polarizer reflective STN-LCDs containing either a mirror or holographic slanted reflector,â SID, Boston, MA, May 21-23 (2002).
âA new type of liquid crystal diffractive light valve with a very small pixel size,â SID, Boston, MA, May 21-23 (2002).
"Liquid-crystal modes for AMLCDs," P. Bos, SID Applications Seminar, (2000), The Application and Evaluation of Information Displays, (2000). Invited.
"Nematic bistable liquid crystal displays," P. Bos, J. Doane, Presented at the Association of Super-Advanced Electronic Technologies International Forum on Low Power Displays Tokyo, Japan, July 21 (2000). Invited.
âApplications of liquid crystalsâ 1.5 day seminar, Kodak Inc., Rochester NY Aug 21-22, 2000. Invited
âBistable displaysâ Seminar, Canon Inc. Atsugi, Japan July 22 (2000). Invited.
"Defect free C1 alignment," P. Bos, C. Wang, P. Watson, Liquid Crystal Alignment Workshop, University of Colorado: Boulder, Colorado (May 22, 2000), Invited.
"Fast switching electrically controlled birefringence liquid crystal devices," V. Sergan, P. Bos, G. Sharp, Oral Presentation at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.
"Computer simulation of the homeotropic to focal conic transition in cholesterics," J. Anderson, P. Watson, T. Ernst, P. Bos, presented at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.
"Influence of the polymer network on the switching threshold voltage in the polymer stabilized ferroelectric liquid crystals," J. Pirs, P. Bos, S. Zumer, R. Petkovsek, T. Matuszceyk, presented at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.
"The Helfrich initiated transient planar to equilibrium planar transition in cholesteric liquid crystals," P. Watson, J. Anderson, V. Sergan, P. Bos, Oral Presentation at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.
"Liquid crystal agile beam steering," B. Winker, D. Gu, P. Bos, O. Lavrentovich, M. O'Callaghan, N. Clark, ALCOM Symposium, ALCOM Symposium, Invited Talk.
âEfficient, accurate liquid crystal digital light deflector,â C. Titus, P. Bos, O. Lavrentovich, Proc. of SPIE, 3633, 244-253 (1999).
"Emerging liquid-crystal technologies," P. Bos, SID Seminar Lecture Notes, Vol. I, Sem. M9 (1999). Invited.
"Nematic LCD modes and applications," P. Bos, SID Applications Seminar, Seminar A-2 (1999). Invited.
âThe effect of pretilt and surface topography on defects in SmC* liquid crystal devicesâ 19 Nov, 1999 Invited Seminar, Science University of Tokyo ( Tokyo campus ) Invited
âThe bistable twisted nematic device, an alternative to SmC* devices?" 22 Nov. 1999 Invited Seminar, Science University of Tokyo (Yamaguchi campus). Invited
"Bistable nematic liquid crystal displays," Invited Seminar, Toyama University: Toyama, Japan (December, 1998).Invited
"Electrically controlled liquid crystalline diffraction gratins," D. Subacius, D. Voloschenko, S. Shiyanovskii, P. Bos, O. Lavrentovich, 17th International Liquid Crystal Conference, Strasbourg, France, July 19-24, 1998. P2-169.
"Mechanism of relaxation from electric field induced homeotropic to planar texture in cholesteric liquid crystals," V. Sergan, J. Anderson, P. Watson, J. Ruth, P. Bos, 17th ILCC. P4-117.
&˛Ô˛ú˛őąč;âDiffractive cholesteric grating,â D. Subacius, P. Bos, O. Lavrentovich, American Physical Society, St. Louis, March 1998.
âPatterned alignment, liquid crystal diffractive spatial light modulators & devices,â C. Holton, P. Bos, M. Miller, W. Glenn, SPIE, San Jose CA, Jan. 1998.
âDiffractive cholesteric gratings,â D. Subacius, P. Bos, O. Lavrentovich, APS March Meeting Abstracts, 598 code N7-10.
âThe effect of polymer networks on the electro-distortional characteristics of nematic liquid crystals,â J. Li, J. Anderson, C. Hoke, T. Nose, P. Bos, 16th ILCC, C1P52(1996).
âThe effect of material parameters on the hysteresis of bistable STN displays,â J. Li, C. Hoke, P. Bos, 16th ILCC, B1P54(1996).
âTwisted Nematic Displays,â P. Bos, Liquid Crystal Applications Short-Course at 16th ILCC. Invited.
âDielectric study of transitions between cholesteric textures and design of dynamic drive scheme,â X. Huang, D. Yang, P. Bos, J. Doane, 16th ILCC, B1P.46 (1996).
âMechanism of liquid crystal alignment on polymer films exposed to linearly polarized ultraviolet light,â J. Chen, D. Johnson, P. Bos, X. Wang, J. West, 16 ILCC, B4P.14.
âPolyimide thickness induced alignment transition in cholesteric displays,â J. Ruth, P. Bos, D. Davis, B. Taheri, A. Ali, A. Kahn, X. Huang, M. Stefanov, 16th ILCC, C1P.49.
âAn observation of the effect of the surface topography on the defect density in SmC* devices,â J. Pirs, S. Kralj, S, Pirs, B. Marin, P. Watson, C. Hoke, P. Bos, 16th ILCC, D1P.29.
âInvestigation of domain instability in the four-domain twisted nematic configuration,â J. Chen, J. Li, D. Johnson, P. Bos, N. Kim, 16th ILCC, D2P29(1996).
âHigh ambient reflective displays for transport applications,â B. Taheri, J. Ruth, P. Bos, M. Stefanov, A. Kahn, J. Doane, 1996 Symposium on Vehicular Displays, Ypsilanti, Sept 17, 1996 (I).
âLiquid crystal alignment,â P. Bos, Workshop on Liquid Crystals on Silicon at NSF/ERC for Optoelectronic Computing Systems at the University of Colorado at Boulder, June 26 - 29 1995 Invited.
âPolymer-modified TN and supertwisted nematic (STN) devices,â P. Bos, J. Li, D. Yang, W. Doane, Proc. SPIE v2408, 74 (1995).
âZero-field bistable reflective cholesteric displays,â P. Bos, D. Yang, M. Pfeiffer, J. Doane VDE Conference on Vacuum Electronics and Displays, Garmisch, Germany, 219, May 1995. Invited.
âPolymer stabilized liquid crystal materials,â (invited paper) P. Bos, J. Li, D. Yang, J. Doane, IS&T / SPIE Symposium on Electronic Imaging: Science & Technology (2408-10) (1994). Invited.
âContrast and color uniformity optimization of and LCD Pi-Cell pixel,â M. Flynn, P. Bos (J), 15th International Liquid Crystal Conference (1994).
âPolymer stabilized TN displays,â P. Bos, J. Rahmon, J. Doane, 1993 Gordon Conference on Liquid Crystals. Invited.
âPerformance limits of stereoscopic viewing systems using active and passive glasses,â P. Bos, IEEE Annual Virtual Reality Symposium 1993, 371-376.
âTime sequential stereoscopic displays: the contribution of phosphor persistence to the âGhostâ image intensity,â P.J. Bos, Proceedings of the 1991 annual conference of the Institute of Television Engineers of Japan, 603. Invited
âStereoscopic display performance,â 1990 Electronic Imaging Conference.
âLiquid crystals: fundamental properties and applications,â J. West, P. Bos, P. Palffy/Muhoray, D. Allender, Tutorial Short Course T75; SPIE OE/LASE'89; Los Angeles Ca.; 1989. Invited.
âDirector alignment methods for ferroelectric liquid crystal matrix displays,â (Invited Paper), P. Bos, Optical Society of America 1988 Annual Meeting Santa Clara, Ca., 1988. Invited
âA method for director alignment of SmC* devices,â P. Bos, K. Koehler/Beran (J), 1st International Symposium on Ferroelectric Liquid Crystals, Arcachon, France, 1987.
âThe prospects for color flat-panel displays,â P. Bos (Evening Discussion Panel); SID International Symposium, Orlando, Fl., 1985. Invited
âThe pi-cell: a fast liquid crystal optical switching device,â P. Bos, 4th European Winter Conference on Liquid Crystals of Low-Dimensional Order and their Applications, Bovec, Yugoslavia, 1984. Invited.
âRemoval of the optical bounce and turn-off time reduction in twisted nematic displays,â R. Hubbard, P. Bos (J), Biennial Display Research Conference, Cherry Hill, N.J., 1980.
âMotional averaging of single spin interactions in liquid crystals,â Bull.Am.Phys. Soc. 22, 1269 (1977).
Magazine Articles
âLiquid Crystal Technology Advances toward âTrueâ 3D Flat Panel Displaysâ Philip Bos, Achintya Bhowmik Information Display, September, 2011 p2
âFast-Switching Liquid Crystal Effects for Displaysâ Information Display, September, 2007 p20
Issued Patents (35)
âDouble-layer electrode for electro-optic liquid crystal lensâ USP: 9,470,937 October 18, 2016
âTunable electro-optic liquid crystal lenses having resistive bridges and methods for forming the lensesâ USP: 9,323,113; April 26, 1016
âTunable electrode-optic liquid crystal lenses having resistive bridges and methods for forming the lenses&˛Ô˛ú˛őąč;â; USP: 9,280,020; March 8, 2016
âFast response optical devices by double liquid crystal cells structureâ USP 9,261,745 Feb 16, 2016.
âPhoto Patterned Pre-Tilt Liquid Crystal Cells, Lenses and Methodsâ USP 8,654,281 Feb 18, 2014 ,
âTunable Liquid Crystal Devices, Devices using same, and methods of making and using sameâ US Patent 8,531,646 Sept 10, 2013
âLiquid Crystal Device and methods there ofâ US Patent 8,300,189.. October 30, 2012
âPolarization Independent Liquid Crystal Based Etalon and Devices using Sameâ US Patent 8,237,910
âMaterials for promoting alignment of liquid crystals on SiOx and other substratesâ; C.Chen, P.Bos, J. Anderson. US Patent 7,733,452, issued June 8, 2010
âBirefringent Filter-Based Color Generation Scheme for a Passive Matrix Display Deviceâ, P. Bos and S. Saeed, .US patent 7,289,189 issued 10-30-2007,
âLiquid crystal on silicon diffractive light valve,â B. Wang, P. Bos, D. Chung, US Patent 6,924,870, issued August 2, 2005.
âBistable liquid crystal display device using polymer stabilization,â US Patent 6,583,838, issued June 24, 2003.
âBistable reflective cholesteric liquid crystal displays utilizing super twisted nematic driver chips,â J. Ruth, R. Hewitt, P. Bos, US Patent 6,278,429, issued August 21, 2001.
âFour domain pixel for liquid crystalline light modulating device,â P. Bos, H. Vithana, D. Johnson, J. Chen, US Patent 6,141,074, issued Oct. 31, 2000.
âBistable liquid crystal display device using polymer stabilization,â J. Li, P. Bos, US Patent 6,133,975, issued Oct. 17, 2000.
"Reflective optically active diffractive device," P. Bos, J. Chen, D. Johnson, W. Glenn, C. Holton, B. Smith, U.S. Patent 5,825,448, issued Oct. 20, 1998.
"Polymer stabilized four domain twisted nematic liquid crystal display," P. Bos, J. Chen, U.S. Patent 5,831,700, issued Nov. 3, 1998.
âSwitchable color filter using electrically controllable optical retarders,â P. Bos, P. Johnson, Jr., US Patent 5,714,970, issued Feb. 3, 1998.
âMethod for forming uniformly spaced plastic sybstrates liquid crystal displays,â J.West, P.J Bos, US Patent 5,766,694, issued June 16, 1998.
âDynamic drive method and apparatus for a bistable liquid crystal display,â X. Huang, P. Bos, D. Yang, US Patent 5,748,277, issued May 5, 1998.
âOptically active diffractive device,â P. Bos, B. Smith, C. Holton, W. Glenn, US Patent 5,638,201, issued June 10, 1997.
âLow electro-optic threshold liquid crystal cell and method of fabricating same,â P. Bos, J. A. Rahman, US Patent 5,606,442, issued February 25, 1997.
âColor liquid crystal display having a wide angle of viewing angle,â P. Bos, US Patent 5,550,662, issued August 27, 1996.
âGray scale LC device having a wide viewing angle,â P. Bos, US Patent 5,410,422, issued April 25, 1995.
âSwitchable color filter and field sequential full color display system,â P. Bos, P. Johnson Jr., US Patent 5,387,920, issued February 7, 1995.
âHigh contrast light shutter system,â P. Bos, US Patent 5,187,603, issued February 16, 1993.
âLiquid crystal fiber optic attenuator,â S. Rumbaugh, M. Jones, F. Scheu, P. Bos, US Patent 5,015,057, issued May 14, 1991.
âPolarization controller for use in optical fiber communications,â S. Rumbaugh, M. Jones, P. Bos, US Patent 4,979,235, , issued December 18, 1990.
âChiral liquid crystal cell,â P. Bos, US Patent 4,900,132, issued February 13, 1990.
âDrive waveform for ferroelectric displays,â P. Bos, US Patent 4,870,398, issued September 26, 1989.
âStereoscopic imaging system with passive viewing apparatusâ P. Bos, US Patent 4,719,507,
issued January 12, 1988.
âMethod and apparatus for reducing optical cross talk in a liquid crystal optical switchâ P. Bos, D. Prince, US patent 4,652,087, issued March 24, 1987.
âHigh speed electro-optical light gate and field sequential full color display system incorporating same,â P. Bos US patent 4,635,051, issued January 1, 1987.
âField sequential color display system,â P. Bos, P. Johnson Jr., US Patent 4,582,396, issued April 15, 1986.
âRapid starting high-speed liquid crystal variable optical retarder,â P. Bos, US Patent 4,566,758.
Education
M.A. in Physics, ĂŰŃżappUniversity, 1974
B.A. in Physics, Hope College, 1973
Expertise
Applications
Displays
Optical Components
Sensors
Chemical Physics
Natural and Physical Sciences
Mathematics and Technology
Physical Sciences
Design
modeling and processes for liquid crystal based optical devices
processes and modeling of electrically controllable
non-mechanical lenses and optical beam steering devices
Materials
processes and modeling on Pancharatnam phase devices
processes related to azodye-based photo alignment