Ֆիզիկայի ֆակուլտետ
Faculty of Physics
The process of training specialists in the field of physics and mathematics began in 1922 in YSU.:
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Rafik S. Hakobyan

Professor | Chair of Optics
Education
1978: MS in Physics, Yerevan State University, Yerevan, Armenia
1981 – 1984: PhD student in the Physics Department of the Yerevan State University and Institute of Mechanics Problem in Moscow

Academic degrees
Ph.D. Thesis: “Coherent light interaction with orientational and hydrodynamical motions in liquid crystals”, 1985, Kiev State University, Kiev, Ukraine
D. Sc. Thesis: “Orientational, light-induced hydrodynamic phenomena in liquid crystals and related optical nonlinearities”, 1995, Institute of Laser Technology, Yerevan, Armenia

Professional experience
1978 - 1981: Laboratory assistant Optics chair (OC), Physics department (PD), Yerevan State University (YSU).
1985 - 1986: Junior Scientist, OC, PD, YSU.
1986 - 1993: Senior Research Scientist, OC, PD, YSU.
1993 - 2000: Associate Professor, OC, PD, YSU.
2000 - 2007: Professor, head of research group, OC, PD, YSU.
2007 - 2012: Head of Optics chair, Physics department, Yerevan State University.
Since 2011 up to present: Professor, head of research group, Optics chair, YSU.
Since 2016 up to present: head of “Optoelectronics and Photonics” laboratory, YSU.
Since 2011 up to present: Senior Researcher, Beam Engineering for Advanced Measurements Co., 1300 Lee Road, Orlando, FL 32810.

Research experience
Visiting researcher (or professor)
Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), University of Metz and Supelec, France, 2008
University of Lens, France, 2008
Center for Research and Education in Optics and Lasers (CREOL) and Beam Engineering for Advanced Measurement Corporation, Orlando, FL, USA, 2002, 2004
Laval University, Center for Optics, Photonics and Lasers, Faculty of Sciences and Engineering, Department of Physics, Engineering Physics and Optics, Quebec, Canada, 2001, 2003
Institute of Applied Physics, Darmstadt, Germany, 1993
University of Yena, Germany, 1987

Academic courses thought
The physics of optical phenomena
Introduction in nonlinear physics
Nonlinear optics and laser physics
Linear and nonlinear dynamics of light field
The physics of liquid crystals
Hydrodynamics of liquid crystals
Nonlinear optics of liquid crystals

Supervision of MS studies
Since 1985 more than 100 MS students some of them now are studying or working in USA, Canada, Japan, UK, France, German, Greece and others

Supervision of PhD studies
“The laser emission interaction with defect containing periodic structured liquid crystals” - Karen Allahverdyan, 2012
“Investigations of orientational optical nonlinearity in liquid crystals conditioned by thermomecha-nical mechanism” – Gevorg Gevorgyan, 2011
“Laser – induced thermomechanical phenomena and new mechanism of strong orientational optical nonlinearity” - Jafar Poursamad Bonab, 2009
“The peculiarities of anisotropic diffraction gratings” – Gegham Zakharyan, 2008
“Dynamics of photo-polymerization phenomena and diffraction structure formation in composites of polymer dispersed liquid crystals” – Arayik Aslanyan, 2008
“The formation and peculiarities of diffraction gratings in photopolymer dispersed liquid crystalline materials” – Artur Galstyan, 2004
“Experimental study of thermomechanical phenomena in nematic liquid crystals”-Emin Santrosyan, 2000

Professional interests
Nonlinear optics, light-induced hydrodynamics and thermomechanics of liquid crystals, optofluidics, Jones matrix methods in optics and diffraction grating in polymer dispersed liquid crystals

Principal achievements / contributions
Conservation laws and integration of the equilibrium equation of liquid crystals
Orientational instability of liquid crystal at hydrodynamical flows
Orientational optical nonlinearity near the non-optical instabilities
Laser induced hydrodynamics and hydrodynamical nonlinearities
Thermomechanical effects in deformed nematics
Anisotropic Diffraction Holograms Recorded in Polymer-Dispersed Liquid Crystals

Participation in grant projects
ECO-NET Projet: 21310WD 2009, ECO-NET Projet: 18843TM 2008
2003 - 2011: NATO Grant - SfP 978027
2002 - 2004: CRDF CGP grant number AP2 - 2302 - YE - 02
1997 - 1998: INTAS 97 - 1672
1993: Short - term research grant of International Science Foundation
1994 - up to date: - Armenian Grant
1993: Grant of Armenian professional society in USA

Languages
Armenian, Russian, English

Organizing of international conferences
Chairman of organizing committee of the 14th International Topical Meeting on “OLC 2011” (25 September – 1 October, Yerevan, Armenia, 2011)
Guest editor of the Proceedings of the 14th International Topical Meeting on Optics of Liquid Crystals, OLC 2011
Co - chairman of organizing committee of the Young Optician School (2-7 May, Yerevan, Armenia, 2007)
Secretary of the First International Congress of Armenian Physicists (11-15 September, Yerevan, Armenia, 2005)

Membership
PhD and doctor of science Committee Member, Radik Martirosyan, Yerevan State University, since 1996; member of American Optical Society (OSA), since 2011

Awards received
Diploma of the National Academy of Armenia

rhakob@ysu.am

Термокапиллярный механизм конвекции в наножидкостях, обусловленный поглощением пространственно-периодического лазерного излучения
2017 | Article
Известия НАН РА. Физика (Journal of Contemporary Physics (Armenian Academy of Sciences). 2017, 52. 1, стр. 16-25
|
М. Р. Акопян, Р. С. Акопян
Принудительная конвекция в легированных наночастицами нематиках в отсутствие переориентации
2016 | Article
Известия НАН РА. Физика. 2016, 51(3), стр. 363-370
|
Гравитационный и термокапиллярный механизмы возбуждения гидродинамических движений в жидких кристаллах лазером с пространственно периодической структурой интенсивности
2014 | Article
Известия НАН Армении, Физика, 2014, т.49, №3, с. 177-189
Лазерно-индуцированные термокапиллярные волны в изотропных и анизотропных жидкостях
2014 | Article
Изв. НАН РА, Физика, 49(4), pp. 230–240, 2014
Gravitational and Thermocapillary Mechanisms of Hydrodynamic Motions in Liquid Crystals Induced by Laser with a Spatially Periodic Intensity Structure
2014 | Article
J. Contemp. Phys., 49(3), pp. 110-118, 2014
Enhanced Physical Properties of Nematics Doped with Ferroelectric Nanoparticles
2014 | Article
Armenian Journal of Physics, 7(1), pp. 11-18, 2014
Laser-induced thermocapillary waves in isotropic and anisotropic liquids
2014 | Article
J. Contemp. Phys., 49(4), pp. 144–150, 2014
Volume Expansion Mechanism of Laser-Induced Hydrodynamic Reorientation
2014 | Article
Armenian Journal of Physics, 7(1), 2014, pp. 19-27
Thermomechanical Effects in Hybrid and Cylindrical-Hybrid Oriented Nematic Liquid Crystals
2014 | Article
Molecular Crystals and Liquid Crystals, 2014, Vol. 599, pp. 1-11
Thermomechanical Effects in Hybrid and Cylindrical-Hybrid Oriented Nematic Liquid Crystals
2014 | Article
Mol. Cryst. and Liquid Cryst. 596(1), 152-162, 2014
О стабильности однородной ориентации в плоскопараллельной ячейке жидкого кристалла, обогащенного наночастицами
2014 | Article
Известия НАН Армении, Физика, 49(5), сс. 309-316, 2014
Liquid-Crystal Devices and Waveplates for light controlling
2014 | Article
Armenian Journal of Physics, 7(2), pp. 59-68, 2014
Дисклинации в нематиках при учете флексоэлектрического эффекта
2013 | Article
Известия НАН Армении, Физика, т.48, №6, с.394-406 (2013)
Jonathan P. Vernon, Svetlana V. Serak, Rafael S. Hakobyan , Vincent P. Tondiglia, Timothy J. White, Nelson V. Tabiryan, Timothy J. Bunning
Generation of Light Scattering States in Cholesteric Liquid Crystals by Optically Controlled Boundary Conditions
2013 | Article
Crystals, 2013, 3, 234-247; doi:10.3390/cryst3010234
A. A. Ghandevosyan, R. S. Hakobyan
Decreasing of Electric Fréedericksz Transition Threshold in Nematic Liquid Crystals Doped With Ferroelectric Nanoparticles
2012 | Article
J. Contemp. Phys., 47(1), pp. 47-51, 2012
J. B. Poursamad, M. Asadpour, K. M. Aghdami, M. Sahraei, R. S. Hakopyan , M. A. Mohtadibonab
Excitation of Rayleigh-Benard Convection in Homeotropic Nematic Liquid Crystal by a Gaussian Laser Beam from Above
2012 | Article
Mol. Cryst. Liq. Cryst., Vol. 560, pp. 49/[289]–56/[296], 2012
J. B. Poursamad, F. B. Jahanbakhsh, M. Aas, K. M. Aghdami, M. Sahraei, R. S. Hakopyan
Light Induced Thermocapillary Motion in Nematic Liquid Crystals
2012 | Article
Mol. Cryst. Liq. Cryst., Vol. 560, pp. 57/[297]–61/[301], 2012
G. S. Gevorgyan, A. K. Alexanyan, R. S. Hakobyan , R. B. Alaverdyan
Experimental study of laser induced orientational effects in twist and planar aligned azobenzene nematic liquid crystals
2012 | Article
Mol. Cryst. Liq. Cryst., Vol. 559, pp. 91–96, 2012
A. K. Aleksanyan, A. K. Minasyan, R. S. Hakobyan
Theoretical study of convective motions in liquids and liquid crystals induced by laser radiation with Gaussian cross distribution of intensity
2012 | Article
Mol. Cryst. Liq. Cryst., Vol. 560, pp. 123/[363]–130/[371], 2012
O. Buluy, D. Burseva, M. R. Hakobyan , John W. Goodby, M. Kolosov, Yu. Reznikov, R. S. Hakobyan , K. Slyusarenko, M. Prodanov, V. Vashchenko
Influence of Surface Treatment of Ferromagnetic Nanoparticles on Properties of Thermotropic Nematic Liquid Crystals
2012 | Article
Mol. Cryst. Liq. Cryst., Vol. 560, pp. 149/[389]–158/[398], 2012
K. Allahverdyan, A. Gevorgyan, T. Galstian, R. Hakobyan
Polarization and spectral properties of a cholesteric liquid crystal Fabry-Perot slab
2012 | Article
Mol. Cryst. Liq. Cryst., Vol. 560, pp. 23/[263]–34/[274], 2012
Svetlana V. Serak, Rafael S. Hakobyan , Sarik R. Nersisyan, Nelson V. Tabiryan, Timothy J. White, Timothy J. Bunning, Diane M. Steeves, Brian R. Kimball
All-optical diffractive/transmissive switch based on coupled cycloidal diffractive waveplates
2012 | Article
Optics Express Vol. 20, No. 5, 5460-5469, 2012
K. R. Allahverdyan, A. H. Gevorgyan, R. R. Hakobyan , T. V. Galstian
Observation of Optical Non-Reciprocity in a Single Layer of Transparent Linear Chiral Media with Asymmetric Boundaries
2012 | Article
JETP Letters, Vol. 96, No. 11, pp. 694–698, 2012
G. S. Gevorgyan, A. K. Aleksanyan, R. S. Hakobyan , R. B. Alaverdyan
Experimental Study of Laser-Induced Orientational Effects in Twist and Planar Aligned Azobenzene Nematic Liquid Crystal
2012 | Article
Molecular Crystals and Liquid Crystals. 2012, Vol. 559, Issue 1, pp. 91 – 96
R. S. Hakobyan , M. R. Hakobyan, G. S. Gevorgyan, R. B. Alaverdyan , A. K. Aleksanyan
Some Light-Induced Orientational Effects in Nematic Liquid Crystals. Journal of Physics
2012 | Article
Conference Series 2012, Vol. 350, 012034
A. K. Minasyan, M. R. Hakobyan, R. S. Hakobyan
Excitation of Regular Convective Motions in Liquids and Liquid Crystals by an Acoustic Wave
2011 | Article
J. Contemp. Phys., 46(1), pp. 40-50, 2011
Лазерно-индуцированные нелинейные ориентационные явления в азобензольном нематическом жидком кристалле
2011 | Article
Известия НАН Армении, Физика, т. 46, №4, с. 243-248, 2011
M. R. Hakobyan, R. S. Hakobyan
Decreasing of Magnetic Fréedericksz Transition Threshold in Nematic Liquid Crystals Doped With Ferromagnetic Nanoparticles
2011 | Article
J. Contemp. Phys., 46(3), pp. 180-184, 2011
A. K. Aleksanyan, A. K. Minasyan, R. S. Hakobyan
Theoretical study of convective motions in liquids and liquid crystals induced by laser radiation with Gaussian cross distribution of intensity
2011 | Thesis
14th Topical Meeting on the Optics of Liquid Crystals, OLC–2011, P-95, September 25 - October 1 2011, Marriott, Yerevan, Armenia
O. Buluy, D. Burseva, M.R. Hakobyan , John W. Goodby, M. Kolosov, Yu. Reznikov,, R. S. Hakobyan , K. Slyusarenko, M. Prodanov, V. Vashchenko
Nematic-isotropic transition in the ferromagnetic nanoparticles doped thermotropic nematic liquid crystals
2011 | Thesis
14th Topical Meeting on the Optics of Liquid Crystals, OLC–2011, P-8, September 25 - October 1 2011, Marriott, Yerevan, Armenia
A. M. Galstyan, G. G. Zakharyan, R. S. Hakobyan
Polarization properties of thin anisotropic diffraction gratings
2010 | Article
Anniversary scientific session dedicated to the 90-th Anni-versary of YSU, Yerevan 11-15 May 2009, collection of articles, v.1-physics and mathematical sciences, pp. 49-57, 2010
M. R. Hakobyan, A. K. Minasyan, R. S. Hakobyan
Nematic Liquid Crystal Director Reorientation by a Pressure of Acoustic Wave
2010 | Article
Anniversary scientific session dedicated to the 90-th Anniversary of YSU, Yerevan 11-15 May 2009, collection of articles, v.1-physics and mathematical sciences, pp. 106-110, 2010
M. R. Hakobyan, G. S. Gevorgyan , R. S. Hakobyan
Reorientation of the Liquid Crystal Director in a Hele-Shaw Cell
2010 | Article
J. Contemp. Phys., 45(5), pp. 221-223, 2010
Light-Induced Thermomechanical Effect as a New Mechanism of Liquid Crystal’s Orientational Oprical Nonlinearity
2010 | Article
JETP Letter, 92(7), pp. 504-506, 2010
Light-induced thermomechanical effect as a new mechanism of orientational optical nonlinearity in liquid crystals
2010 | Article
JETP Letters, 2010, Vol. 92, № 7, pp. 457-459
Experimental study of laser-induced thermomechanical effect and new type of orientational optical nonlinearity in twist aligned nematic liquid crystal
2010 | Article
Int.Conf. , Laser Physics 2010, 12-15 October, Ashtarak,Armenia (2010),1B-1 / Proc. SPIE 7998, 799801 p.1 - 5, (2010
J. B. Poursamad, A. K. Aleksanyan, R. S. Hakobyan
Thermomechanical mechanism of orientational optical nonlinearity in twisted nematic liquid crystals
2010 | Article
J. Appl. Phys. 108, 123113-1-123113-5 (2010)
M. R. Hakobyan, R. S. Hakobyan
Orientational Thermomechanical Effects in Liquid Crystals
2009 | Article
International Scientific Conference Materials, Vanadzor State Teacher’s Training Institute, pp. 63-68, 2009
A. M. Galstyan, G. G. Zakharyan, R. S. Hakobyan
Polarization properties of thin anisotropic diffraction gratings
2009 | Thesis
11th Topical Meeting on the Optics of Liquid Crystals, OLC–2009, P66, September 28th - October 2nd 2009, Erice, Sicily (Italy)
G. S. Gevorgyan, A. K. Aleksanyan, R. S. Hakobyan
Orientational Optical Nonlinearity of Twisted Nematic Liquid Crystal Due to the Thermomechanical Effect
2009 | Thesis
11th Topical Meeting on the Optics of Liquid Crystals, OLC–2009, P21, September 28th - October 2nd 2009, Erice, Sicily (Italy)
Dispersive regime of spectral compression
2008 | Article
Quant.Electronics, 38/4, 383-387 (2008)
A. L. Aslanyan, A. V. Galstyan, R. S. Hakobyan
Nonlocal 3D diffusion model for recording thick gratings in polymer dispersed liquid crystals
2008 | Article
J. Contemp. Phys., 43(4), pp. 261-267 (2008)
A. L. Aslanyan, A. V. Galstyan, R. S. Hakobyan
Diffusion model for recording of diffraction gratings in monomer-dye-oxygen-liquid crystal mixtures
2008 | Article
Proceedings of conference “Lasers physics” – 2007, Gitutyun, pp. 45-48(2008), Ashtarak, Armenia
G. G. Zakharyan, R. S. Hakobyan , A. V. Galstyan
Distribution of Diffraction Intensity in Diffraction Orders for Thin Anisotropic Diffraction Gratings
2008 | Article
Mol. Cryst. Liq. Cryst., Vol. 488, pp. 110–117, 2008
J. B Poursamad, R. S. Hakobyan
Director Reorientation due to Temperature Gradient in Twisted Nematic Liquid Crystals
2008 | Article
Proceeding of the 14th Conference on Optics and Photonics. pp. 345-349, 2008. Rafsanjan, Vali-asr University, Physics Department (Jan. 29-31)
Bagdasaryan T., Galstyan A., Hakobyan R.
Theoretical investigation of linearly chirped thick hologram gratings written in polymer dispersed liquid crystals (PDLC)
2008 | Article
Proceeding of the Conference on “Laser Physics-2007”, Gitutyun, pp. 221-224, 2008, Ashtarak
J. B. Poursamad , R. S. Hakobyan
Director Reorientation in Twisted nematic Liquid Crystals due to Thermomechanical Effect
2008 | Article
Physics Letters A, 372, pp. 4647 – 4649, 2008
J. B. Poursamad, R. S. Hakobyan
Thermomechanical mechanism of reorientation in twisted nematic liquid crystals
2007 | Article
Proceedings of conference “Lasers physics” – 2007, Gitutyun, pp. 205-208 (2008), Ashtarak, Armenia
K. M. Sargsyan, T. V. Galstian, R. S. Hakobyan
Photo-induced Surface Relief Modulation due to the Surface Tension Anisotropy
2007 | Thesis
12th International Topical Meeting on “OLC 2007”, Puebla, Mexico, p. 122 (2007)
G. G. Zakharyan, R. S. Hakobyan , A. V. Galstyan
Distribution of diffraction intensity in diffraction orders for thin anisotropic diffraction gratings
2007 | Thesis
12th International Topical Meeting on “OLC 2007”, Puebla, Mexico, p. 104 (2007)
Thermal Polarization Properties of Thick Anisotropic Diffraction Holograms Recorded in Polymer-Dispersed Liquid Crystals
2006 | Article
Technical Physics, Vol. 51, No. 6, 2006, pp. 752–757
Ոչգծային ֆիզիկա
2006 | Book
Մեթոդական աշխատանք, Երևան, 2006, 165 էջ
Ոչ գծային ֆիզիկայի ներածություն
2006 | Book
ԵՊՀ հրատ., Երևան 2006, 166 էջ
A. V. Galstyan, G. G. Zakharyan, R. S. Hakobyan
The Theory of Light diffraction in thin anisotropic medium
2006 | Article
Mol. Cryst. and Liquid Cryst. 453, 203-213 (2006)
Rafik S. Hakobyan , Karine M. Sargsyan, Nelson V. Tabirian
Jump-Like Light-Induced Hydrodynamic Reorientation of LC’s Caused by Direct Volume Expansion
2006 | Article
Mol. Cryst. and Liquid Cryst. 453, 239-250 (2006)
Thermomechanical Oscillations in Hybrid Nematic Liquid Crystals
2006 | Article
Phys. Rev. E 73, 061707-1 (2006)
Rafik S. Hakobyan , Garegin L. Yesayan, Boris. Ya. Zeldovich
Thermomechanical Oscillations in Hybrid Oriented Nematic Liquid Crystals
2005 | Article
11th International Topical Meeting on “OLC 2005”, Clearwater Beach on Sand Key, Florida, USAp. 107 (2005)
A. V. Galstyan, G. G. Zakharyan, R. S. Hakobyan
The Theory of Light diffraction in thin anisotropic medium
2005 | Thesis
11th International Topical Meeting on “OLC 2005”, Clearwater Beach on Sand Key, Florida, USA, p. 36 (2005)
Р. С. Акопян , А. В. Галстян, Г. Г. Захарян, Ю. С. Чилингарян
Поляризационные свойства толстых анизотропных дифракционных голограмм, записанных на материалах, полимеризуемых ИК излучением
2005 | Article
ЖТФ, 75(1), 55-60 (2005)
R. S. Akopyan , T. V. Galstian, S. Harbour, Yu. S. Chilingaryan
Photopolymerization Kinetics in Near Infrared Sensitive Liquid Crystalline Materials
2005 | Article
Journal of Advanced Materials, V.37, No.1, pp. 28-32 (2005)
Excitation of convective motions and surface hydrodynamic soliton-type waves in liquid crystals by a Gaussian laser beam
2004 | Article
Quantum Electronics, 2004, Vol. 34, № 3, pp. 267-271
Возбуждение поверхностных гидродинамических волн солитон¬ного типа на поверхности жидкого кристалла лазерным излучением с гауссовским попе-речным профилем
2004 | Article
Изв. НАН РА, физика, 2004, т. 39, № 1, с. 44-52
Stimulation of convective motions and hydrodynamic orientational surface waves in liquid crystals by laser radiation with Gaussian cross distribution of intensity
2004 | Article
Mol. Cryst. Liq. Cryst., 2004, Vol. 421, pp. 261-269
R. S. Akopyan , A. V. Galstyan, T. V. Galstian
Theoretical Simulation of the dead zone in hologram recording on photopolymerizable materials
2004 | Article
Technical Physics, 49(6), 733-738 (2004)
R. S. Akopyan , A.V.Galstyan, T. V. Galstian
Fine structure of angular selectivity of diffraction efficiency of hologram recorded on materials polymerized by IR radiation
2004 | Article
JETP, 99(1), pp. 101-108 (2004)
R. S. Hakobyan , B. Ya. Zeldovich
Excitation of Surface Capillary Waves by Spatially Periodical Laser Radiation
2004 | Article
Journal of Nonlinear Optical Physics & Materials. 13(1), 1-6 (2004)
Stimulation of convective motions and hydrodynamical soliton like surface waves in the liquid crystals by laser radiation with Gaussian cross distribution
2004 | Article
Quantum Electronics, 34(3), 267-271 (2004)
S. Harbour, T. Galstian, R. S. Akopyan , A. V. Galstyan
Angular selectivity asymmetry of holograms recorded in near infrared sensitive liquid crystal photopolymerizable materials.
2004 | Article
Opt. Comm.238, 261-267 (2004)
R. S. Hakobyan , B. Ya. Zeldovich, H. Seferyan
Thermomechanical Coupling in a Cylindrical-Hybrid-Aligned Nematic Liquid Crystal
2004 | Article
Journal of Experimental and Theoretical Physics 99(5), 1039-1043 (2004)
A. V. Galstyan, R. S. Hakobyan , S. Harbour, T. V. Galstian
Thermally switchable grating based on near infrared sensitive holographic polymer dispersed liquid crystals
2004 | Article
Opt. Comm. 241, pp. 23-28(2004)
Excitation of convective motions in isotropic and anisotropic liquids by light
2003 | Article
Quantum Electron. 33/1, 81-89 (2003)
Light-driven convective motions in isotropic and anisotropic liquids
2003 | Article
Quantum Electronics, v.33, No 1, 2003, pp. 81-89
Возбуждение гидродинамических движений в жидких кристаллах механическими колебаниями
2003 | Article
Изв. НАН РА, физика, 2003, т. 37, №2, с.107-109
A. V. Galstyan, R. S. Hakobyan , S. Harbour, T. V. Galstian
Thermal switch of near infrared sensitive holographic polymer dispersed liquid crystals
2003 | Thesis
10th International Topical Meeting on “OLC 2003”, Aussois, France, p. 26 (2003)
Mechanical vibration driven hydrodynamical motions in liquid crystals
2002 | Article
J. Contempt. Phys., v.37, No 5, 2002, pp. 107-113
Instability of Light-Drivn Convective Motions
2002 | Article
Proceedings of SPIE, 2002, v. 4748, p.120-131
Instabilities and stochasticity at the interaction of laser radiation with the liquid crystal-semiconductor boundaries
2001 | Article
Int. conf. “Lasers 2001”. December 3-7, 2001, Tucson, Arizona, USA
Instability of light-driven convective motions
2001 | Article
Abstract of the international conference ICONO 2001, Minsk
Thermomechanical effects in the nematic liquid crystals
2001 | Article
Journal of Appl. Physics, 2001, v. 90, N 7, pp. 3371-3376
R. S. Akopyan , R. B. Alaverdian , Yu. S. Chilingarian , A. S. Vardanyan, H. Ye. Seferyan
Hydrodynamic Instability in Case of Laser Induced Convective Motions
2000 | Article
Abstract of the international Conference on “Chaos and Supercomputers 2000”, September 11-16, 2000, Nor-Amberd, Armenia
Thermomechanical Rotation of Cylindrical-Hybrid Oriented Nematic Liquid Crystal
2000 | Article
Abstract of International Conference on “Conversion Potential of Armenia and ISTC Programs”, October 2-7, 2000, Yerevan
R. S. Akopyan , R. B. Alaverdian , Yu. S. Chilingarian , A. S. Vardanian, H. Ye. Seferyan
Observation and Investigation of Gravitational and Thermocapillary Convections and Hydrodynamic waves Induced by Spatially-Periodic Structure of Laser Radiation
2000 | Article
Abstract of the International Conference on Lasers 2000, December 4-8, Albuquerque, New Mexico, USA
Hydrodynamic Oscillations in Nematics Due to the Laser-Induced Thermomechanical Effect
2000 | Article
Abstract of the International Conference on Lasers 2000, December 4-8, Albuquerque, New Mexico, USA
Experimental investigations of thermomechanical effects in NLC
2000 | Article
J. Contemp. Phys., v.35, No 4, 2000, pp. 139-142
Photoinduced thermomechanical effect in homogeneous nematics
2000 | Article
Quantum Electronics, 2000, Vol. 30, № 7, pp. 653-654
Hysteresis upon light-induced hydrodynamic reorientation of the director of a nematic liquid crystal
2000 | Article
Quantum Electronics, 2000, Vol. 30, № 8, pp.745-746
Մակածված փուլային անցումներ և հիդրոդինամիկական անկայունություններ հեղուկ բյուրեղներում
2000 | Book
«Մանկավարժ», Երևան, 2000, 184 էջ
Liqht induced thermomechanical effects in homogenous nematics
2000 | Article
“Kvantovaya Electronica”, 2000 v. 30, p. 653-654
Laser-induced thermomechanical effect in the nematic liquid crystal
1999 | Article
Abstracts of the International Conference on Lasers', 1999, December 13-17, Le Chateau Frontenac Quebec, Quebec, Canada
Electro-induced thermomechanical effects in nematic liquid crystals
1999 | Article
J. Contemp. Phys., v.34, No 3, 1999, pp.149-153
Thermomechanical effect in a cylindrically-hybrid nematic liquid crystal
1999 | Article
Technical Physics Letters, 1999, Vol. 25, № 3, pp. 237-238
Thermomechanical effect in a planar nematic induced by a quasistatic electric field
1999 | Article
Technical Physics, 1999, Vol. 44, № 4, pp. 462-463
Laser-induced hydrodynamic effects in liquids and liquid crystals
1998 | Article
Abstracts of the XVI International Conference on Coherent and Nonlinear Optics, Moscow, June 29 – July 3, 1998
Observation of the effect of light-induced hydrodynamic reorientation of nematic liquid crystals
1998 | Article
Optics and spectroscopy, 1998, Vol. 84, № 5, pp. 685-687
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1997 | Article
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1994 | Article
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Forced convection in liquid due to the pressure of second approximation of acoustic wave
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1984 | Article
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Orientational optical nonlinearity near the instability op nematic liquid crystal flow over on inclined plane
1984 | Article
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Optics of a chiral liquid crystal far from a Bragg resonance
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R. S. Akopyan , B. Ya. Zel’dovich
Conservation laws and integration of the equilibrium equation of liquid crystals
1982 | Article
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Laser radiation generation in the system dye-liquid crystal: in the region of phase transition; at the planar action
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