Vladimir G. CHIGRINOV


The Scientific Degree: Doctor Of Physical and Mathematical Science, Professor

Professor
Dept. Of Electonic and Computer Engineering
The Hong Kong University of Science and Technology
Clear Water Bay, Kowloon, Hong Kong

Tel: (852)2358-8522
Fax: (852)2358-1485
E-mail
eechigr@ust.hk

Biography

Professor Chigrinov graduated from Faculty of Applied Mathematics, Moscow Electronics Institute, the Diploma of Engineer - Mathematician (MPhil) in 1973. In 1978, he obtained PhD degree in Solid State Physics (Liquid Crystals) in the Institute of Crystallography , USSR Academy of Sciences. In 1988, he becomes a Doctor of Physical and Mathematical Science and obtained a degree of a Professor in 1998. Since 1973, he was a Senior, Leading Researcher, and then Chief of Department in Organic Intermediates & Dyes Institute (NIOPIK). Since 1996 he was working as a Leading Scientist in the Institute of Crystallography, Russian Academy of Sciences and join HKUST in 1999.

He was a coauthor of the first LC materials and devices based on Electrically Controlled Birefringence, Twisted Nematic and Supertwisted Nematic and Ferroelectric LC materials, working at understanding the fundamental aspects of LC physics and technology, including electrooptical effects in liquid crystals and optimization of LC device configurations. Some new LC Electrooptical Modes, such as Orientational Instability in Cholesteric LC, Deformed Helix Effect in Ferroelectric LC, and Total Internal Reflection, Surface Gliding Effect and Surface Induced Orientational Transition in Nematic LC were first described by him and confirmed in experiment. The classification of the Domain Structures in LC was made based on his theoretical predictions and simulation results. Efficient Modeling Universal System of LC Electrooptics software was developed with his direct participation and supervision.

He was a coauthor of a pioneering work in LC Photoaligning Technology, which has more than 600 citations in scientific and technical journals and mentioned as one of the ten most heavily-cited and influential papers published in the Japanese Journal of Applied Physics (JJAP) since the first volume (1962). He is an Expert in Flat Panel Technology in Russia , recognized by World Technology Evaluation Centre, 1994, a Senior Member of the Society of Information Display (SID) since 2004 and become a fellow of SID since Jan 2008. Since 1997 he is a Vice-President of Russian Chapter of SID. He is a member of Editorial Board of "Liquid Crystals Today" since 1996 and Associate Editor of Journal of SID since 2005.

He is an author of 4 books, 19 reviews and book chapters, 172 journal papers, 382 Conference presentations and 64 patents and patent applications in the field of liquid crystals since 1974. 10 PhD students defended their degrees under his supervision. He has outstanding poster paper award in IDW'03 and IDW'06, which are the largest display annual Conferences in Japan. He is a Member of International Advisory Committee for Advanced Display Technology Conferences in Russia, Ukraine and Belarus since 1999, European SID Program Committee since 2004, International Advisory Board of International Liquid Crystal Conference since 2006, Member of Program Committee of Emerging Liquid Crystal Technologies Conference in OPTO 2008, Photonics West, San Jose, CA, 2008, Internationally Advisory Board of a new open-access eJournal Photonics Letters of Polandhttp://photonics.pl/PLP/index.php/letters/index, Member of Program Committee of IMID’09 Conference, Seoul, Korea, October 2009, Member of Program Committee of Emerging Liquid Crystal Technologies V Conference, San Francisco, January, 2010.

 

 

Honours and Awards

Outstanding poster awards in 2003 and 2006 IDW Conferences (the largest annual display Conference in Japan).

Senior Member of the Society for Information Display (SID) since 10.10.04.

SID Fellow since 15.01.08

The paper of M.Schadt, K.Schmett, V.Kozenkov, V.Chigrinov, Surface-induced parallel alignment of liquid crystals by linearly polymerized photopolymers,  Jap. J.Appl. Phys. P.I., Vol.31, pp. 2155-2164 (1992) is number 4 among the most heavily-cited and have been influential papers published in JJAP since the first volume (1962) and have been selected from the various fields of applied physics by the JJAP Editorial Board (http://www.ipap.jp/highlights/jjap.html).

 

Research Interests

1. Development of the new azodye and photo-crosslinking materials for liquid crystal display technology. Azo-dyes alignment was stabilized by polymerisation, which makes these alignment layers both thermo and UV stable. The fundamental description of the phenomena based on the model of the rotational diffusion in the field of linearly polarized light. Azo-dyes were shown to exhibit excellent photoalignment of polymerizable liquid crystals (PLC). The proposed dyes need an extremely low exposure dose (less than 50 mJ/cm2) for PLC alignment. New photoalignment materials are ready for the production of patterned optical films requested by modern LCD technologies. 3D LCD and transflective LCD can be made based on micro-patterned retarders obtained by LCP photoalignment. LC voltage lenses with a voltage controlled optical distance based on photoaligned LC layers are developed. The first commercialization of photoaligning materials with a complete avoiding of rubbing technology in 10th generation of LCD-TV by Sharp is announced in 2011.

2. We have obtained some good results in deformed helix derroelectric (DHF) effect.  In particular, a high quality dark state of DHF FLCD has been obtained as well as V-shape switching with a high frequency.  The application of fast V-shaped DHF-FLC for new active-matrix LCD and optical data processing devices is envisaged. One of the application id field sequential LCD-TV and projectors with high energy efficiency, high resolution and enhanced color reproduction.

3. Optically rewritable technique based on photoalignment technology is developed, as E-paper displays suffer from the high level complexity of driving electronic due to the insufficient durability of flexible conductor and contact bonding. Optical writing and erasing E-paper is a valuable contribution to the green technology, as in many cases E-paper will replace usual paper with the same quality of image. The possible but not limiting applications of the new optically rewritable (ORW) liquid crystal displays (e-paper) based on photoaligning are light printable rewritable paper, labels and plastic card displays, price labels in supermarkets, E-albums, E-advertisements.

4. New LC switches, filters, attenuators, equalizers, polarization controllers, phase emulators and other fiber optical components were produced based on photoalignment. Photonic crystals and photo-alignment technique were developed for new for LC fiber components. Application of FLC 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 low operating voltages.

Current Research Projects

Project objective:       “
Novel Photoaligned Optically Rewritable Liquid Crystal  Displays and Photonics Devices”      
Sources: ITP/009/09NI
Project objective:       “Flexible liquid crystal displays based on nanotechnology ”      
Sources: CERG 612310
Project objective:       “Novel Photoaligned Fast Ferroelectric Liquid Crystal  Display and Photonics Devices”      

 

Selected Publications and Patents (recent)

Books


1. S.V. Pasechnik, V.G.  Chigrinov, D.V.  Shmeliova, Liquid Crystals, Viscous and Elastic Properties, Wiley-VCH, Berlin, 424 pp, October, 2009.

2. V.G. Chigrinov, V.M. Kozenkov, H.S. Kwok, Photoalignment of Liquid Crystalline Materials: Physics and Applications, 248 pp., Wiley, August 2008.

3. V.G. Chigrinov, Liquid Crystal Devices: Physics and Applications, Artech-House, Boston-London, pp.357, 1999
4. L.M. Blinov, V.G.Chigrinov, Electrooptic effects in Liquid Crystal Materials, Springer-Verlag, N.Y.  459pp,  1994.

Journal papers

1. Vladimir G. Chigrinov, Liquid crystal applications in photonics,  Frontiers of Optoelectronics in China, Vol.3, pp. 1674-4128  (2010).

2. Sarik R. Nersisyan, Nelson V. Tabiryan, Diane M. Steeves, Brian R. Kimball, Vladimir G. Chigrinov, and Hoi Sing Kwok, Study of azo dye surface command photoalignment material for photonics applications, Appl. Opt. , Vol. 49, No. 10, pp. 1720-1727 (2010).

3. Tao Du, Lishuang Yao, Vladimir G. Chigrinov, Hoi-sing Kwok, Single-cell-gap transflective liquid-  crystal display and the use of photoalignment technology, J. SID, 18/6,   pp. 421-426 (2010).

4. A.G. Maksimochkin, S.V. Pasechnik, G.I. Maksimochkin, V.G. Chigrinov, Electrically controlled  waveguide mode in LC layer for fiber optic applications, Opt. Comms.,  Vol.283, pp. 3136-3141 (2010).

5.A. V. Dubtsov, S. V. Pasechnik, Alexei D. Kiselev, D. V. Shmeliova, and V. G. Chigrinov, Electrically assisted light-induced azimuthal gliding of the nematic liquid-crystal easy axis on photoaligned substrates, Phys. Rev. E, 82, 011702 (1-6), 2010.

6. Xiaojin Zhao, Amine Bermak, Farid Boussaid, and Vladimir G. Chigrinov, Liquid-crystal micropolarimeter array for full Stokes polarization imaging in  visible spectrum, Optics Express, Vol. 184, No. 17, pp.  17776-17787 (2010).

7. Eugene Pozhidaev, Vladimir Chigrinov, Gurumurthy Hegde, Peizhi Xu, Multistable electro-optical  modes in ferroelectric liquid crystals, J. SID, 17/1,   pp. 53-59 (2009).

8. O. Yaroshchuk, V. Kyrychenko, Du Tao, V. Chigrinov, H. S. Kwok, H. Hasebe, and H. Takatsu, Stabilization of liquid crystal photoaligning layers by reactive mesogens, Appl. Phys. Lett., 95, 021902-1-021902-3 (2009).

9. Alexei D. Kiselev, Vladimir G. Chigrinov, and Hoi-Sing Kwok, Kinetics of photoinduced ordering  in azo-dye films: Two-state and diffusion models, Phys. Rev. E, 80, 011706 (1-16), 2009.

10. Anatoli Murauski, Vladimir Chigrinov and Hoi-Sing Kwok, New method for measuring polar  anchoring energy of nematic liquid crystals, Liq. Cryst, Vol. 36, No.8, pp. 779-786 (2009).

Patents (USA)

 

1

7,783,144

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Electrically tunable microresonators using photoaligned liquid crystals

2

7,705,939

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Transflective liquid crystal display

3

7,381,507

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Photo-patterned light polarizing films

4

7,070,913

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Photo-induced dichroic polarizers and fabrication methods thereof

5

6,671,028

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Distorted helix ferroelectric liquid crystal cell

6

6,630,289

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Photo-patterned light polarizing films

7

6,582,776

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Method of manufacturing photo-alignment layer

8

5,838,407

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Liquid crystal display cells

9

5,784,139

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Image display device

10

5,770,109

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Ferroelectric liquid crystal cell

11

5,676,880

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Ferroelectric liquid crystal cell

12

5,389,698

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Process for making photopolymers having varying molecular orientation using light to orient and polymerize

13

5,327,273

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Bistable ferroelectric liquid crystal display cell

 

Professional Activities

FYP Coordinator in ECE Dept since April 2004.
Member of ECE UG Committee since April 2004.
Member of Technology Review Committee (TRC) in HKUST since 2004.

Short Courses at the "Photonics West" Conference in USA, California on Physics of LCs and LC Displays in 1995 and 1996. Tutorials in ASID’04 in Nanjing, China, February; 2004, ASID’07 Shanghai, China, March, 2007, Eurodisplay 2007, September 2007 in Moscow, Russia, Eurodisplay 2009, September 2009 in Rome, Italy, ASID 2009, October 2009 in Guangzhou, China.
Conference Chair: LC Photonics 2010, HKUST, December 2010.

Reviewer of the Journals “Physical Review”, “Journal of Applied Physics”, “Liquid Crystals”, “Journal of Display Technology”, “ IEEE Transactions on Electron Devices”, “Optical Engineering”, “Optical Communications”, “Applied Physics Letters”, “Physical Review Letters”.