Prof. Vladimir Grigorievich Chigrinov Profile

Prof. Vladimir Grigorievich Chigrinov

at Hong Kong Univ of Science and Technology

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (35)

Proceedings Article | 4 March 2022 Presentation + Paper

Azodyes for liquid crystal photoalignment in displays and diffraction optical elements

Vladimir Chigrinov, Victor Belyaev, Vladimir Kozenkov, Denis Chausov, Hakob Margaryan, Nune Hakobyan, Nelson Tabiryan

Proceedings Volume 12023, 1202305 (2022) https://doi.org/10.1117/12.2614534

KEYWORDS: Liquid crystals, Polarizers, Polarization, Optical alignment, Diffraction, LCDs, Molecules, Optical components, Polymers, Wave plates

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Proceedings Article | 17 April 2020 Paper

High-efficient liquid crystal polarization gratings for autostereoscopic 3D display

Da Chen, Huijie Zhao, Qi Guo, Dong Xu, Linghao Sun, V. Chigrinov, H. S. Kwok

Proceedings Volume 11455, 1145521 (2020) https://doi.org/10.1117/12.2563404

KEYWORDS: Polarization, 3D displays, Diffraction gratings, Liquid crystals, Diffraction, Prisms, Holography, Digital holography

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Proceedings Article | 6 September 2019 Paper

Polarization-dependent diffractive optical elements based on photoalignment of liquid crystals

Qi Guo, Kexin Yan, Ruotong Wu, Huijie Zhao, V. Chigrinov, H. S. Kwok

Proceedings Volume 11132, 111320X (2019) https://doi.org/10.1117/12.2528298

KEYWORDS: Polarization, Liquid crystals, Absorption, Diffraction, Polymers, Ultraviolet radiation, Molecules, Diffraction gratings, Diffractive optical elements

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Proceedings Article | 7 March 2016 Open Access

Photoaligning and photopatterning technology: applications in displays and photonics

Vladimir Chigrinov

Proceedings Volume 9769, 97690J (2016) https://doi.org/10.1117/12.2207874

KEYWORDS: Liquid crystals, LCDs, Photonics, Optical alignment, Lenses, Polarization, Crystals, Photonic crystals, Optics manufacturing, Photonic liquid crystal fibers, Light emitting diodes, Polarizers, Diffraction, Photonic devices

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Proceedings Article | 5 September 2015 Paper

An optical system adopting liquid crystals with electrical tunability of wavelength and energy density for low level light therapy

Chia-Ming Chang, Yu-Jen Wang, Hung-Shan Chen, Yi-Hsin Lin, Abhishek Srivastava, Vladimir Chigrinov

Proceedings Volume 9565, 95650K (2015) https://doi.org/10.1117/12.2188889

KEYWORDS: Wave plates, Liquid crystals, Polarizers, Optical filters, Light sources, Low level phototherapy, Solids, Transmittance, Phototherapy, Electrodes

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Proceedings Article | 11 March 2015 Paper

A polarized liquid crystal lens with electrically switching mode and optically written mode

Hung-Shan Chen, Yi-Hsin Lin, Chia-Ming Chang, Yu-Jen Wang, Abhishek Srivastava, Jia-Tong Sun, Vladimir Chigrinov

Proceedings Volume 9384, 938413 (2015) https://doi.org/10.1117/12.2082622

KEYWORDS: Liquid crystals, Polarization, Switches, Glasses, Modulation transfer functions, Polymers, Ultraviolet radiation, Polarizers, Switching, Refractive index

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Proceedings Article | 16 December 2014 Paper

Periodic alignment of liquid crystal molecules in silica micro-capillaries

Michalina Jóźwik, Sławomir Ertman, Agata Siarkowska, Tomasz Woliński, Vladimir Chigrinov

Proceedings Volume 9290, 92900M (2014) https://doi.org/10.1117/12.2075393

KEYWORDS: Liquid crystals, Molecules, Capillaries, Silica, Photography, Polymers, Glasses, Polarizers, Ions, Polarization

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Proceedings Article | 25 February 2014 Paper

Biocomposite polymer embedded with light-sensitive molecules for plastic displays

Gurumurthy Hegde, A. Yuvaraj, Gan Mei, Siti Aisyah Mustapha, Mashitah Yusoff, Vladimir Chigrinov

Proceedings Volume 9005, 90050B (2014) https://doi.org/10.1117/12.2050030

KEYWORDS: Absorption, Polymers, Liquid crystals, Ultraviolet radiation, Composites, Polarization, Molecules, Polarizers, LCDs, Coating

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Proceedings Article | 19 February 2014 Paper

Liquid crystal devices based on photoalignment and photopatterning materials

Vladimir Chigrinov

Proceedings Volume 9004, 90040A (2014) https://doi.org/10.1117/12.2036555

KEYWORDS: Liquid crystals, Diffraction, Diffraction gratings, Polarizers, Polarization, Molecules, CMOS sensors, LCDs, Ultraviolet radiation, Optical alignment

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Proceedings Article | 5 March 2013 Paper

Fabrication of liquid crystal gratings based on photoalignment technology

Yan-Qing Lu, Wei Hu, Abhishek Srivastava, Vladimir Chigrinov

Proceedings Volume 8642, 86420G (2013) https://doi.org/10.1117/12.2004245

KEYWORDS: Liquid crystals, Diffraction gratings, Polarization, Digital micromirror devices, Optical alignment, Diffraction, Polarizers, Electrodes, Photomicroscopy, Switching

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Proceedings Article | 11 October 2012 Paper

Liquid crystal gratings from nematic to blue phase

Yan-qing Lu, Wei Hu, Xiao-wen Lin, Abhishek Srivastava, Vladimir Chigrinov

Proceedings Volume 8475, 84750Q (2012) https://doi.org/10.1117/12.929260

KEYWORDS: Liquid crystals, Polarization, Diffraction gratings, Diffraction, Electrodes, Polarizers, Transmittance, Optical alignment, Digital micromirror devices, Molecules

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Proceedings Article | 11 October 2012 Paper

Tailoring liquid crystals to become fast and efficient terahertz devices

E. Pickwell-MacPherson, E. P. Parrott, H. Park, F. Fan, V. Chigrinov

Proceedings Volume 8475, 84750D (2012) https://doi.org/10.1117/12.928191

KEYWORDS: Liquid crystals, Terahertz radiation, Absorption, Birefringence, Fabry–Perot interferometers, Optical components, Visible radiation, Switching, Phase shifts, Dielectrics

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Proceedings Article | 24 February 2012 Paper

Liquid crystals for terahertz technology

Hongkyu Park, Fan Fan, Edward P. Parrot, Haewook Han, Vladimir Chigrinov, Emma MacPherson

Proceedings Volume 8261, 826107 (2012) https://doi.org/10.1117/12.908504

KEYWORDS: Terahertz radiation, Liquid crystals, Birefringence, Absorption, Optical components, Refractive index, Terahertz technology, Optical properties, Spectroscopes, Sensors

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Proceedings Article | 11 February 2012 Paper

Photoalignment and photopatterning in liquid crystal photonics

Vladimir Chigrinov

Proceedings Volume 8279, 827911 (2012) https://doi.org/10.1117/12.905915

KEYWORDS: Liquid crystals, Polarization, Switching, Switches, Photonics, Optical components, Fiber optics, Fiber optic communications, Waveguides, Image sensors

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Proceedings Article | 18 May 2009 Paper

Usage of liquid crystals in optical sensors of mechanical forces and motion

Sergey Pasechnik, Dina Shmeliova, Valentin Tsvetkov, Aleksandra Torchinskaya, Vladimir Chigrinov

Proceedings Volume 7356, 73561M (2009) https://doi.org/10.1117/12.820611

KEYWORDS: Liquid crystals, Sensors, Optical sensors, Electric field sensors, Polarizers, Calibration, Liquids, Refractive index, Physical phenomena, Optical properties

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Proceedings Article | 3 February 2009 Paper

Liquid crystal applications in photonics

Vladimir Chigrinov

Proceedings Volume 7232, 72320P (2009) https://doi.org/10.1117/12.811316

KEYWORDS: Liquid crystals, Polarization, Photonics, Photonic crystals, Switches, Switching, Fiber optics, Optical components, Waveguides, Refractive index

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Proceedings Article | 21 November 2007 Paper

Liquid crystal devices for photonics applications

Vladimir Chigrinov

Proceedings Volume 6781, 67811M (2007) https://doi.org/10.1117/12.740138

KEYWORDS: Liquid crystals, Photonics, Fiber optics, Polarization, Switches, Photonic crystals, Cladding, Switching, Telecommunications, Optical switching

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Liquid crystal (LC) devices for Photonics applications is a hot topic of research. Such elements begin to appear in Photonics market. Passive elements for fiber optical communication systems (DWDM components) based on LC cells can successfully compete with the other elements used for the purpose, such as micro electromechanical (MEM), thermo-optical, opto-mechanical or acousto-optical devices. Application of nematic and ferroelectric LC for high speed communication systems, producing elements that are extremely fast, stable, durable, of low loss, operable over a wide temperature range, and that require small operating voltages and extremely low power consumption. The known LC applications in fiber optics enable to produce switches, filters, attenuators, equalizers, polarization controllers, phase emulators and other fiber optical components. Good robustness due to the absence of moving parts and compatibility with VLSI technology, excellent parameters in a large photonic wavelength range, whereas the complexity of the design and the cost of the device are equivalent to regular passive matrix LC displays makes LC fiber optical devices very attractive for mass production. We have already successfully fabricated certain prototypes of the optical switches based on ferroelectric and nematic LC materials. The electrooptical modes used for the purpose included the light polarization rotation, voltage controllable diffraction and fast switching of the LC refractive index. We used the powerful software to optimize the LC modulation characteristics. Use of photo-alignment technique pioneered by us makes it possible to develop new LC fiber components. Almost all the criteria of perfect LC alignment are met in case of azo-dye layers. We have already used azo-dye materials to align LC in superthin photonic holes, curved and 3D surfaces and as cladding layers in microring silicon based resonators. The prototypes of new LC efficient Photonics devices are envisaged. Controllable photonic crystal / liquid crystal (PC/LC) devices became a "hot" topic of research. New PC/LC passive elements of fiber optical systems: electrically tunable LC photonic fibers, fiber optics tunable LC filters, tunable photonic crystal lasers are envisaged. A method for the formation of controllable PC/LC structures, based on photo-aligned LC is considered. Filling of the interstices of the photonic crystal with the photo-aligned LC material and subjecting the LC to a varying electric field can produce a tunable photonic crystal element. We have already used the photoaligning materials to align LC mixtures in small cavities, such as the holes and tubes of photonic crystals, having size of 1 μm and less and obtained excellent LC orientation inside the tubes by photoalignment.

Proceedings Article | 9 February 2007 Paper

Liquid crystal photoalignment: history and future

V. Chigrinov, H. Kwok, Hirokazu Takada, Haruyoshi Takatsu

Proceedings Volume 6487, 64870F (2007) https://doi.org/10.1117/12.714853

KEYWORDS: Liquid crystals, LCDs, Polarizers, Absorption, Molecules, Polarization, Ultraviolet radiation, Polymers, Wave plates, Liquid crystal on silicon

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In this original review we briefly consider the novel azo-dye photo-aligning technology: history and the perspectives for future applications in liquid crystal (LC) devices. The review describes the following items. The brief introduction to the history of photoalignment and the basic classes of the photoaligning materials: photosensitive polymers, azodyes and monolayers will follow with an introduction to the physical mechanisms of the photo-aligning and photo-patterning technology. The advantages and drawbacks of various photo-aligning materials are analyzed from the point of view of practical applications. The detail description of the diffusion photo-aligning in azo-dye materials is provided. The characteristics of azo-dye photoaligning LC layers are compared with those ones prepared by polyimide rubbing method. The characterization of LC-surface interaction, such as pretilt angle and azimuthal anchoring energy is discussed. The newly developed materials should have a controllable pretilt angle and anchoring energy, thus enabling to develop a new generation of the LC devices: with low voltage, fast response and wide viewing angles. The problem of image sticking can be considerably reduced due to the high anchoring energy of azo-dye materials. Promising results, obtained for voltage holding Ratio (VHR) and residual DC voltage (RDC) in azodye photo-aligning materials are also shown. This implies that the azo-dyes can be applied as aligning layers in active matrix liquid crystal displays (AM-LCDs). The possibility to use the photo-aligning layers for new types of liquid crystal displays such as FLCD, VAN-LCD, &pgr;-BTN LCD, optical rewritable memory, microdisplays, and TN-LCD on plastic substrates is demonstrated. The photoaligning of liquid crystal polymers (LCP) and the new classes of devices based on them (optical retarders and compensators) is discussed. Special types of 3D LC alignment, LC alignment inside thin micro tubes, and grating surface were concerned. New superthin photo-aligned polarizers based on azo-dye layers were demonstrated. The polarizers are based both on photo-aligned lyotropic LC as well as pure azo-dye layers. The polarizers can be patterned and put inside LC display cell to serve as internal polarizers. Both color and neutral internal polarizers can be fabricated with the thickness 0.3-0.7 &mgr;m. The electo-optic response of TN-LCD with internal polarizers is practically the same as in case of usual external polarizers. New applications in transflective and 3D displays are envisaged.

Proceedings Article | 25 October 2005 Paper

Infiltration of photonic crystal fiber with liquid crystals

Vladimir Presnyakov, Zhijian Liu, Vladimir Chigrinov

Proceedings Volume 6017, 60170J (2005) https://doi.org/10.1117/12.630994

KEYWORDS: Liquid crystals, Glasses, Photonic crystal fibers, FT-IR spectroscopy, Polarization, Capillaries, Absorption, Reflectivity, Photonic crystals, Spectroscopy

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Proceedings Article | 13 October 2005 Paper

Fast optical retarder using deformed-helical ferroelectric liquid crystals

Vladimir Presnyakov, Zhijian Liu, Vladimir Chigrinov

Proceedings Volume 5970, 59701K (2005) https://doi.org/10.1117/12.629198

KEYWORDS: Polarization, Liquid crystals, Wave plates, Electro optics, Polarizers, Ferroelectric LCDs, Birefringence, Optical switching, Telecommunications, Switches

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Proceedings Article | 5 January 2004 Paper

New development in photoalignment technologies

Hoi Sing Kwok, Vladimir Chigrinov

Proceedings Volume 5213, (2004) https://doi.org/10.1117/12.509191

KEYWORDS: Liquid crystals, LCDs, Absorption, Ultraviolet radiation, Polymerization, Polarization, Polymers, Electro optics, Lithium, Ferroelectric LCDs

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Proceedings Article | 30 April 2003 Paper

Liquid crystal devices for fiber optical applications

Vladimir Chigrinov

Proceedings Volume 5003, (2003) https://doi.org/10.1117/12.473844

KEYWORDS: Liquid crystals, Polarization, Fiber optics, Switches, Photonic crystals, Switching, Electro optics, Optical switching, Fast packet switching, Fiber optic communications

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Proceedings Article | 12 December 2002 Paper

Mechanism of LCD photoalignment

Hoi-Sing Kwok, M. Khazimullin, Vladimir Chigrinov

Proceedings Volume 4799, (2002) https://doi.org/10.1117/12.453296

KEYWORDS: Molecules, Diffusion, Birefringence, Absorption, Polarization, Oscillators, Solids, LCDs, Phase measurement, Liquid crystals

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Proceedings Article | 31 May 2002 Paper

LCD-DESIGN: universal system for computer simulation and optimization of electro-optical devices on the base of liquid crystals

Dmitry Yakovlev, Georgy Simonenko, Valery Tsoi, Vladimir Chigrinov, Nikolay Khokhlov, Yuri Podyachev

Proceedings Volume 4705, (2002) https://doi.org/10.1117/12.469020

KEYWORDS: LCDs, Liquid crystals, Instrument modeling, Computing systems, Electro optical modeling, Computer simulations, Polarization, Systems modeling, Electro optics, Antireflective coatings

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Proceedings Article | 11 December 2001 Paper

New photo-aligning and photo-patterning technology: superthin internal polarizers, retarders, and aligning layers

Vladimir Chigrinov, HoiSing Kwok, Wing Yip, Vladimir Kozenkov, Elena Prudnikova, Ben Tang, Fouad Salhi

Proceedings Volume 4463, (2001) https://doi.org/10.1117/12.449941

KEYWORDS: Liquid crystals, Polarizers, LCDs, Molecules, Crystals, Absorption, Liquids, Wave plates, Ultraviolet radiation, Polarization

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Proceedings Article | 1 February 1998 Paper

Electro-optic response of a cell with two liquid crystalline layers

Victor Belyaev, Vladimir Chigrinov, A. Kalashnikov, Nikolai Kovtonyuk

Proceedings Volume 3318, (1998) https://doi.org/10.1117/12.300012

KEYWORDS: Liquid crystals, Dielectrics, LCDs, Electro optics, Crystals, Liquids, Mathematical modeling, Electro optical modeling, Actinium, Electronics

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Proceedings Article | 1 February 1998 Paper

Physics and applications of LC photo-alignment: recent results

Vladimir Chigrinov, Vladimir Kozenkov

Proceedings Volume 3318, (1998) https://doi.org/10.1117/12.300025

KEYWORDS: Liquid crystals, LCDs, Molecules, Ultraviolet radiation, Polarization, Polymers, Polymer thin films, Birefringence, Absorption, Oscillators

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Proceedings Article | 29 March 1996 Paper

Application of universal computer modeling system for development of LCSs with high contrast and wide viewing angles

Dmitry Yakovlev, Georgy Simonenko, Vladimir Chigrinov, Yuri Podyachev, Nikolay Khokhlov

Proceedings Volume 2650, (1996) https://doi.org/10.1117/12.237000

KEYWORDS: LCDs, Systems modeling, Computer simulations, Ions, Computing systems, Wave plates, Optical filters, Projection systems, Switching, Polarizers

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Proceedings Article | 19 January 1996 Paper

Investigation of NLC deformations in a nonuniform electric field

G. Nevskaya, V. Kornilov, Olga Makarova, Vladimir Chigrinov

Proceedings Volume 2731, (1996) https://doi.org/10.1117/12.230668

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Proceedings Article | 2 August 1995 Paper

Computer modeling of liquid crystal electro-optics by universal system (Mouse-LCD)

Dmitry Yakovlev, Georgy Simonenko, Valery Tsoi, Vladimir Chigrinov, Nikolay Khokhlov, Y. Radiachev

Proceedings Volume 2372, (1995) https://doi.org/10.1117/12.215557

KEYWORDS: Liquid crystals, Electro optics, LCDs, Modeling, Computing systems, Computer simulations, Electro optical modeling, Systems modeling, Scattering, Liquids

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Proceedings Article | 24 April 1995 Paper

New results on liquid crystal alignment by photopolymerization

Vladimir Chigrinov, Vladimir Kozenkov

Proceedings Volume 2408, (1995) https://doi.org/10.1117/12.207506

KEYWORDS: Natural surfaces, UV optics, Crystals, Photopolymerization, Molecules, Bistability, Polymers, LCDs, Ultraviolet radiation, Liquid crystals

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Proceedings Article | 7 April 1995 Paper

Photoanisotropic films: physics and applications in LCDs

Vladimir Chigrinov, Vladimir Kozenkov

Proceedings Volume 2407, (1995) https://doi.org/10.1117/12.205891

KEYWORDS: LCDs, Ultraviolet radiation, Chlorine, Polarization, Polymers, Birefringence, Liquid crystals, Polarizers, Physics, Molecules

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Proceedings Article | 7 April 1995 Paper

Fast liquid crystal shutters for stereo projection displays

Sergey Belyaev, Vladimir Chigrinov, Nicolay Malimonenko, Aleksandr Miroshin

Proceedings Volume 2407, (1995) https://doi.org/10.1117/12.205902

KEYWORDS: Liquid crystals, Switching, Camera shutters, Liquids, LCDs, Anisotropy, Electro optics, Dielectrics, Lithium, Polarizers

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Proceedings Article | 7 April 1995 Paper

SuperTwist-nematic-based projection liquid crystal screens

Vladimir Chigrinov, Georgy Simonenko

Proceedings Volume 2407, (1995) https://doi.org/10.1117/12.205905

KEYWORDS: Polarizers, Projection systems, Liquid crystals, LCDs, Polymer thin films, Polymers, Computer simulations, Multiplexing, Optical filters, Electro optics

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Proceedings Article | 7 April 1995 Paper

Computer modeling of liquid crystal electro-optics by universal system (mouse-LCD)

Dmitry Yakovlev, Georgy Simonenko, Valery Tsoi, Vladimir Chigrinov, Nikolay Khokhlov, Yuri Podyachev

Proceedings Volume 2407, (1995) https://doi.org/10.1117/12.205901

KEYWORDS: Liquid crystals, LCDs, Electro optics, Computer simulations, Computing systems, Refractive index, Electro optical modeling, Systems modeling, Multiplexing, Dielectrics

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Showing 5 of 35 publications

Proceedings Volume Editor (2)

SPIE Conference Volume | 2 May 2018

Emerging Liquid Crystal Technologies XIII

SPIE Conference Volume | 18 March 2013

Emerging Liquid Crystal Technologies VIII

Conference Committee Involvement (18)

Emerging Liquid Crystal Technologies XX

27 January 2025 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XIX

30 January 2024 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XVIII

1 February 2023 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XVII

25 January 2022 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XVI

6 March 2021 | Online Only, California, United States

Emerging Liquid Crystal Technologies XV

3 February 2020 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XIV

3 February 2019 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XIII

29 January 2018 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XII

31 January 2017 | San Francisco, California, United States

Emerging Liquid Crystal Technologies XI

16 February 2016 | San Francisco, California, United States

Emerging Liquid Crystal Technologies X

9 February 2015 | San Francisco, California, United States

Emerging Liquid Crystal Technologies IX

5 February 2014 | San Francisco, California, United States

Emerging Liquid Crystal Technologies VIII

5 February 2013 | San Francisco, California, United States

Emerging Liquid Crystal Technologies VII

22 January 2012 | San Francisco, California, United States

Emerging Liquid Crystal Technologies VI

25 January 2011 | San Francisco, California, United States

Emerging Liquid Crystal Technologies V

25 January 2010 | San Francisco, California, United States

Emerging Liquid Crystal Technologies IV

25 January 2009 | San Jose, California, United States

Emerging Liquid Crystal Technologies III

20 January 2008 | San Jose, California, United States

Showing 5 of 18 Conference Committees

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