Rafik S. Hakobyan
Biography
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 Problems in Moscow

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

Professional experience
Since 2018 up to present: Dean of Faculty of Physics, YSU
Since 2016 up to present: head of “Optoelectronics and Photonics” laboratory, Leading Researcher, SRIP, YSU
Since 2011 up to present: Senior Researcher, Beam Engineering for Advanced Measurements Co., 1300 Lee Road, Orlando, FL 32810
2007 - 2012: Head of Chair of Optics (CO), Faculty of Physics, YSU
2000 up to present: Professor, head of research group, OC, FP, YSU
1993 - 2000: Associate Professor, CO, FP, YSU
1986 - 1993: Senior Researcher, CO, FP, YSU
1982 - 1986: Junior Researcher, CO, FP, YSU

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

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 study of the peculiarities of spectral compression and self-compression of regular and randomly modulated pulses” – Armine Grigoryan, 2017
“Laser-induced thermomechanical effects in nematics” – Artur Alexanyan, 2013
“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, optofluids, Jones matrix methods in optics and diffraction grating in polymer dispersed liquid crystals, liquid crystalline elastomers

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
Since 1996: 049 PhD and doctor of science Committee Member,
Since 2011: member of American Optical Society (OSA)

Awards received
Diploma of the National Academy of Armenia

rhakob@ysu.am

Rafik S. Hakobyan

Dean | Faculty of Physics
Professor | Faculty of Physics - Chair of Optics
 
 

Book

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Ոչգծային ֆիզիկա | Մեթոդական աշխատանք, Երևան, 2006, 165 էջ

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Ոչ գծային ֆիզիկայի ներածություն | ԵՊՀ հրատ., Երևան 2006, 166 էջ

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Article

T. Dadalyan, K. Petrosyan, R. Alaverdyan, R. Hakobyan

Light-induced hydrodynamic reorientation of hybrid aligned nematic liquid crystals caused by direct volume expansion | Liquid Crystals, 2018, 1, 1-6 pp.

Р. С. Акопян, М. Р. Акопян

Термокапиллярный механизм конвекции в наножидкостях, обусловленный поглощением пространственно-периодического лазерного излучения | Известия НАН РА. Физика (Journal of Contemporary Physics (Armenian Academy of Sciences). 2017, 52. 1, стр. 16-25 |

Г. С. Геворгян, К. А. Петросян, Р. С. Акопян, Р. Б. Алавердян

Экспериментальное исследование конвекции марангони в наножидкостях | Известия НАН РА. Физика (Journal of Contemporary Physics (Armenian Academy of Sciences), 2017, 52, 4, стр. 490-494 |

Rafik S. Hakobyan, Mariam R. Hakobian,

Femtosecond pulse shaping with spatial–light modulator based on twist nematic with homeotropic boundary conditions | Armenian Journal of Physics, 2017, 10(4), 185-191 pp. |

М. Р. Акопян, Р. С. Акопян

Некоторые упругие свойства твердых нематиков | Известия НАН РА. Физика (Journal of Contemporary Physics (Armenian Academy of Sciences), 2017, 52(3), стр. 401-411 |

М. Р. Акопян, Р. С. Акопян

Конвекция в наножидкостях, обусловленная поглощением лазерного излучения | Известия НАН РА. Физика (Journal of Contemporary Physics (Armenian Academy of Sciences), 2017, 52(4), стр. 481-489 |

М. Р. Акопян, Р. С. Акопян

Принудительная конвекция в легированных наночастицами нематиках в отсутствие переориентации | Известия НАН РА. Физика. 2016, 51(3), стр. 363-370 |

R. B. Alaverdyan, M. R. Hakobyan, R. S. Hakobyan, Yu. S. Chilingaryan

Гравитационный и термокапиллярный механизмы возбуждения гидродинамических движений в жидких кристаллах лазером с пространственно периодической структурой интенсивности | Известия НАН Армении, Физика, 2014, т.49, №3, с. 177-189

R. B. Alaverdyan, M. R. Hakobyan, R. S. Hakobyan, Yu. S. Chilingaryan

Лазерно-индуцированные термокапиллярные волны в изотропных и анизотропных жидкостях | Изв. НАН РА, Физика, 49(4), pp. 230–240, 2014

M. R. Hakobyan, R. B. Alaverdyan, Yu. S.Chilingaryan, R. S. Hakobyan

Gravitational and Thermocapillary Mechanisms of Hydrodynamic Motions in Liquid Crystals Induced by Laser with a Spatially Periodic Intensity Structure | J. Contemp. Phys., 49(3), pp. 110-118, 2014

M. R. Hakobyan, R. B. Alaverdyan, R. S. Hakobyan, Yu. S. Chilingaryan

Enhanced Physical Properties of Nematics Doped with Ferroelectric Nanoparticles | Armenian Journal of Physics, 7(1), pp. 11-18, 2014

M. R. Hakobyan, R. B. Alaverdyan, Yu. S. Chilingaryan, R. S. Hakobyan

Laser-induced thermocapillary waves in isotropic and anisotropic liquids | J. Contemp. Phys., 49(4), pp. 144–150, 2014

M. R. Hakobyan, R. B. Alaverdyan, R. S. Hakobyan, Yu. S. Chilingaryan

Volume Expansion Mechanism of Laser-Induced Hydrodynamic Reorientation | Armenian Journal of Physics, 7(1), 2014, pp. 19-27

R. B. Alaverdyan, M. R. Hakobyan, R. S. Hakobyan

Thermomechanical Effects in Hybrid and Cylindrical-Hybrid Oriented Nematic Liquid Crystals | Molecular Crystals and Liquid Crystals, 2014, Vol. 599, pp. 1-11

M. R. Hakobyan, R. B. Alaverdyan, R. S. Hakobyan

Thermomechanical Effects in Hybrid and Cylindrical-Hybrid Oriented Nematic Liquid Crystals | Mol. Cryst. and Liquid Cryst. 596(1), 152-162, 2014

М. Р. Акопян, А. А. Кандевосян, Р. С. Акопян, Ю. С. Чилингарян

О стабильности однородной ориентации в плоскопараллельной ячейке жидкого кристалла, обогащенного наночастицами | Известия НАН Армении, Физика, 49(5), сс. 309-316, 2014

M. R.Hakobyan, R. S. Hakobyan

Liquid-Crystal Devices and Waveplates for light controlling | Armenian Journal of Physics, 7(2), pp. 59-68, 2014

М. Р. Акопян, Р. С. Акопян, Ю. С. Чилингарян

Дисклинации в нематиках при учете флексоэлектрического эффекта | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | J. Contemp. Phys., 46(1), pp. 40-50, 2011

Г. С. Геворгян, Р. Б. Алавердян, Р. С. Акопян

Лазерно-индуцированные нелинейные ориентационные явления в азобензольном нематическом жидком кристалле | 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 | J. Contemp. Phys., 46(3), pp. 180-184, 2011

A. M. Galstyan, G. G. Zakharyan, R. S. Hakobyan

Polarization properties of thin anisotropic diffraction gratings | 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 | 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 | J. Contemp. Phys., 45(5), pp. 221-223, 2010

R. S. Hakobyan, R. B. Alaverdyan, G. S. Gevorgyan , A. A. Kirakosyan

Light-Induced Thermomechanical Effect as a New Mechanism of Liquid Crystal’s Orientational Oprical Nonlinearity | JETP Letter, 92(7), pp. 504-506, 2010

R. S. Hakobyan, R. B. Alaverdyan, G. S. Gevorgyan, A. A. Kirakosyan

Light-induced thermomechanical effect as a new mechanism of orientational optical nonlinearity in liquid crystals | JETP Letters, 2010, Vol. 92, № 7, pp. 457-459

G. S. Gevorgyan, A. A. Kirakosyan, R. B. Alaverdyan, R. S. Hakobyan

Experimental study of laser-induced thermomechanical effect and new type of orientational optical nonlinearity in twist aligned nematic liquid crystal | 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 | J. Appl. Phys. 108, 123113-1-123113-5 (2010)

M. R. Hakobyan, R. S. Hakobyan

Orientational Thermomechanical Effects in Liquid Crystals | International Scientific Conference Materials, Vanadzor State Teacher’s Training Institute, pp. 63-68, 2009

A. A. Kutuzyan, T. G. Mausuryan, G. L. Yesayan, R. S. Hakobyan, L. Kh. Mouradian

Dispersive regime of spectral compression | 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 | 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 | 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 | 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 | 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) | 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 | Physics Letters A, 372, pp. 4647 – 4649, 2008

J. B. Poursamad, R. S. Hakobyan

Thermomechanical mechanism of reorientation in twisted nematic liquid crystals | Proceedings of conference “Lasers physics” – 2007, Gitutyun, pp. 205-208 (2008), Ashtarak, Armenia

R. S. Hakobyan, A. V. Galstyan, G. G. Zakharyan, N. F. Vardanyan , Yu. S. Chilingaryan

Thermal Polarization Properties of Thick Anisotropic Diffraction Holograms Recorded in Polymer-Dispersed Liquid Crystals | Technical Physics, Vol. 51, No. 6, 2006, pp. 752–757

A. V. Galstyan, G. G. Zakharyan, R. S. Hakobyan

The Theory of Light diffraction in thin anisotropic medium | 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 | Mol. Cryst. and Liquid Cryst. 453, 239-250 (2006)

R. S. Hakobyan, G. L. Yesayan, B. Ya. Zeldovich

Thermomechanical Oscillations in Hybrid Nematic Liquid Crystals | Phys. Rev. E 73, 061707-1 (2006)

Rafik S. Hakobyan, Garegin L. Yesayan, Boris. Ya. Zeldovich

Thermomechanical Oscillations in Hybrid Oriented Nematic Liquid Crystals | 11th International Topical Meeting on “OLC 2005”, Clearwater Beach on Sand Key, Florida, USAp. 107 (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 | 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 | Journal of Advanced Materials, V.37, No.1, pp. 28-32 (2005)

Rafik S. Hakobyan, Roman B. Allahverdyan, , Samvel C. Nersisyan, Yuri S. Chilingaryan

Excitation of convective motions and surface hydrodynamic soliton-type waves in liquid crystals by a Gaussian laser beam | Quantum Electronics, 2004, Vol. 34, № 3, pp. 267-271

Акопян Р. С., Алавердян Р. Б., Аракелян А. Г., Нерсисян С. Ц., Саркисян К. М., Чилингарян Ю. С.

Возбуждение поверхностных гидродинамических волн солитон¬ного типа на поверхности жидкого кристалла лазерным излучением с гауссовским попе-речным профилем | Изв. НАН РА, физика, 2004, т. 39, № 1, с. 44-52

R. S. Akopyan, R. B. Alaverdyan, A. G. Arakelyan, S. Ts. Nersisyan, K. M. Sarkisyan, Yu. S. Chilingarian

Stimulation of convective motions and hydrodynamic orientational surface waves in liquid crystals by laser radiation with Gaussian cross distribution of intensity | 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 | 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 | JETP, 99(1), pp. 101-108 (2004)

R. S. Hakobyan, B. Ya. Zeldovich

Excitation of Surface Capillary Waves by Spatially Periodical Laser Radiation | Journal of Nonlinear Optical Physics & Materials. 13(1), 1-6 (2004)

R. S. Akopyan, R. B. Alaverdyan, A. G. Arakelyan, G. L. Yesayan, S. Ts. Nersisyan

Stimulation of convective motions and hydrodynamical soliton like surface waves in the liquid crystals by laser radiation with Gaussian cross distribution | 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. | Opt. Comm.238, 261-267 (2004)

R. S. Hakobyan, B. Ya. Zeldovich, H. Seferyan

Thermomechanical Coupling in a Cylindrical-Hybrid-Aligned Nematic Liquid Crystal | 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 | Opt. Comm. 241, pp. 23-28(2004)

R. S. Akopyan, R. B. Alaverdyan, L. Kh. Muradyan, G. E. Seferyan, Yu. S. Chilingaryan

Excitation of convective motions in isotropic and anisotropic liquids by light | Quantum Electron. 33/1, 81-89 (2003)

R. S. Akopyan, R. B. Alaverdyan, L. Kh. Mouradyan, H. Ye. Seferyan, Yu. S. Chilingarian

Light-driven convective motions in isotropic and anisotropic liquids | Quantum Electronics, v.33, No 1, 2003, pp. 81-89

Акопян Р. С., Алавердян Р. Б., Аракелян А. Г., Есаян Г. Л., Нерсисян С. Ц., Чилингарян Ю. С.

Возбуждение гидродинамических движений в жидких кристаллах механическими колебаниями | Изв. НАН РА, физика, 2003, т. 37, №2, с.107-109

R. S. Akopyan, R. B . Alaverdyan, A. G. Arakelyan, G. L. Yesayan, S. Ts. Nersisyan, Yu. S. Chilingaryan

Mechanical vibration driven hydrodynamical motions in liquid crystals | J. Contempt. Phys., v.37, No 5, 2002, pp. 107-113

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian , H. Y. Seferyan

Instability of Light-Drivn Convective Motions | Proceedings of SPIE, 2002, v. 4748, p.120-131

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian, A. G. Arakelyan, H. Ye. Seferyan, S. Ts. Nersisyan

Instabilities and stochasticity at the interaction of laser radiation with the liquid crystal-semiconductor boundaries | Int. conf. “Lasers 2001”. December 3-7, 2001, Tucson, Arizona, USA

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian, H. Ye. Seferyan

Instability of light-driven convective motions | Abstract of the international conference ICONO 2001, Minsk

Akopyan R. S. , Alaverdyan R. B., Santrosian E. A. , Chilingarian Yu. S.

Thermomechanical effects in the nematic liquid crystals | 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 | Abstract of the international Conference on “Chaos and Supercomputers 2000”, September 11-16, 2000, Nor-Amberd, Armenia

R. S. Akopyan, R. B. Alaverdian, Yu. S. Chilingaryan, E. A. Santrosyan, H. Ye. Seferyan

Thermomechanical Rotation of Cylindrical-Hybrid Oriented Nematic Liquid Crystal | 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 | Abstract of the International Conference on Lasers 2000, December 4-8, Albuquerque, New Mexico, USA

R. S. Akopyan, R. B. Alaverdian, E. A. Santrosian, Yu. S. Chilingarian

Hydrodynamic Oscillations in Nematics Due to the Laser-Induced Thermomechanical Effect | Abstract of the International Conference on Lasers 2000, December 4-8, Albuquerque, New Mexico, USA

R. S. Akopyan, R. B. Alaverdyan, E. A. Santrosyan, Yu. S. Chilingaryan

Experimental investigations of thermomechanical effects in NLC | J. Contemp. Phys., v.35, No 4, 2000, pp. 139-142

R. S. Akopyan , R. B. Alaverdyan, E. A. Santrosian, Yu. S. Chilingarian

Photoinduced thermomechanical effect in homogeneous nematics | Quantum Electronics, 2000, Vol. 30, № 7, pp. 653-654

R. S. Akopyan, R. B. Alaverdyan, A. S. Vardanyan, Yu. S. Chilingaryan

Hysteresis upon light-induced hydrodynamic reorientation of the director of a nematic liquid crystal | Quantum Electronics, 2000, Vol. 30, № 8, pp.745-746

R. S. Akopyan, R. B. Alaverdian, E. A. Santrosyan, Yu. S. Chilingaryan

Liqht induced thermomechanical effects in homogenous nematics | “Kvantovaya Electronica”, 2000 v. 30, p. 653-654

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian, E. A. Santrosian

Laser-induced thermomechanical effect in the nematic liquid crystal | Abstracts of the International Conference on Lasers', 1999, December 13-17, Le Chateau Frontenac Quebec, Quebec, Canada

R. S. Akopyan, R. B. Alaverdyan, S. Ts. Nersisyan, E. A. Santrosyan, Yu. S. Chilingaryan

Electro-induced thermomechanical effects in nematic liquid crystals | J. Contemp. Phys., v.34, No 3, 1999, pp.149-153

R. S. Akopyan, R. B. Alaverdyan, E. A. Santrosyan, S. T. Nersisyan, Yu. S. Chilingaryan

Thermomechanical effect in a cylindrically-hybrid nematic liquid crystal | Technical Physics Letters, 1999, Vol. 25, № 3, pp. 237-238

R. S. Akopyan, R. B. Alaverdyan, E. A. Santrosyan, S. Ts. Nersisyan, Yu. S. Chilingaryan

Thermomechanical effect in a planar nematic induced by a quasistatic electric field | Technical Physics, 1999, Vol. 44, № 4, pp. 462-463

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian, A. S. Vardanyan

Laser-induced hydrodynamic effects in liquids and liquid crystals | Abstracts of the XVI International Conference on Coherent and Nonlinear Optics, Moscow, June 29 – July 3, 1998

Akopyan R. S., Alaverdyan R. B., Oganisyan M. Zh., Chilingaryan Yu. S.

Observation of the effect of light-induced hydrodynamic reorientation of nematic liquid crystals | Optics and spectroscopy, 1998, Vol. 84, № 5, pp. 685-687

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian, A. S. Vardanyan

Hysteresis behavior of light-induced hydrodynamic reorientation of liquid crystal director due to the direct volume expansion | Abstracts of the International Conference on Lasers' 97, 15-19 December, New Orleans, 1997

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian, E. A. Santrosian

Light-induced thermomechanical effect in nematics | Abstracts of the VII International Topical Meeting on Optics of Liquid Crystals (September 8-12, Heppenheim , Germany, 1997

R. S. Akopyan, R. B. Alaverdyan, E. A. Santrosyan, Yu. S. Chilingaryan

Thermomechanical effect in a hybrid-oriented nematic liquid crystal | Technical Physics Letters, 1997, Vol. 23, № 9, pp. 690-691

R. S. Akopyan, R. B. Alaverdyan, E. A. Santrosyan, Yu. S. Chilingaryan

Thermomechanical effect in hybrid-oriented nematic liquid crystal | Pisma v ZhTF v.23, No 17, pp. 77-81 (1997)

R. S. Akopyan, R. B. Alaverdyan, V. E. Drnoyan, Yu. S. Chilingarian

Light wave interaction with escaped-radial nematic | Abstracts of the European Conference on Lasers and Electro-optics (CLEO), 28 August – 2 September, Amsterdam, 1994

R. S. Akopyan, R. B. Alaverdyan, V. E. Drnoyan, Yu. S. Chilingarian

Observation of laser-induced hydrodynamic reorientation of liquid crystals | Abstracts of the International Conference on Lasers' 94, 12 December, McLean, USA, 1994

R. S. Akopyan, R. B. Alaverdyan, V. E. Drnoyan, Yu. S. Chilingarian

Light wave interaction with escaped-radial liquid crystal | Abstracts of the International Conference on Lasers' 94, 12 December, McLean, USA, p.235, 1994

R. S. Akopyan, S. R. Nersisyan

Instabilities and catastrophes in reorientation of liquid crystal director in quasistatic fields | JETP, 78(1), 68-72 (1994)

R. S. Akopyan, N. V. Tabiryan, T. Tschudi

Optically induced hydrodynamic reorientation of liquid crystals and its application for infrared detection and information storage | Phys. Rev. E., 49(4), 3143-3149 (1994)

Геворкян С. Г, Саркисян А.Г., Арутюнян В.М., Акопян Р.С., Вартанян Р.С., Путнынь Э.В., Добровольский Н.М.

О сверхпроводимости при темпе- ратурах выше 100 К в системе Bi- Ca-Sr-Cu-O | Письма в ЖЭТФ, 1989, том.49, вып.2, стр.93-95

R. S. Akopyan, R. B. Alaverdyan, B. Ya. Zel’dovich, N. V. Tabiryan, V. S. Ovsepyan

Infrared radiation detector | USSR patent, № 1589735 (1989)

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian

Forced convection in liquid due to the pressure of second approximation of acoustic wave | Akust. Zhurnal, v.34, No 2, 1988, pp. 336-337

R. S. Akopyan, R. B. Alaverdyan, Yu. S. Chilingarian

Orientational action of light on liquid crystal near the threshold of acoustic wave instability | Pis’ma ZhTF, v.12, No 14, 1986, 858-862

R. S. Akopyan, B. Ya. Zel’dovich

Reorientation of liquid-crystal director by light near the threshold of spatially periodic convective instability | Sov. Phys. JETP, 59(2), 311-317 (1984)

R. S. Akopyan, B. Ya. Zel’dovich

Thermomechanical effects in deformed nematics | Sov. Phys. JETP, 60(5), 953-958 (1984)

R. S. Akopyan, Yu. S. Chilingarian, N. V. Tabiryan, B. Ya. Zel’dovich

Orientational optical nonlinearity near the instability op nematic liquid crystal flow over on inclined plane | J. Physique (Fr.), 45, 413-420 (1984)

R. S. Akopyan, B. Ya. Zel’dovich, N. V. Tabiryan

Optics of a chiral liquid crystal far from a Bragg resonance | Sov. Phys JETP, 56(5), 1024-1027 (1982)

R. S. Akopyan, B. Ya. Zel’dovich

Conservation laws and integration of the equilibrium equation of liquid crystals | Sov. Phys. JETP, 56(6), 1239-1243 (1982)

R. S. Akopyan, R. B. Alaverdyan, J. Kh. Grigoryan, Yu. S. Chilingaryan

Laser radiation generation in the system dye-liquid crystal: in the region of phase transition; at the planar action | Abstracts of the Х Union conference. C&NLO, Kiev, PP. 256-257, 1980
 

Thesis

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 | 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 | 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 | 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 | 11th Topical Meeting on the Optics of Liquid Crystals, OLC–2009, P21, September 28th - October 2nd 2009, Erice, Sicily (Italy)

K. M. Sargsyan, T. V. Galstian, R. S. Hakobyan

Photo-induced Surface Relief Modulation due to the Surface Tension Anisotropy | 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 | 12th International Topical Meeting on “OLC 2007”, Puebla, Mexico, p. 104 (2007)

A. V. Galstyan, G. G. Zakharyan, R. S. Hakobyan

The Theory of Light diffraction in thin anisotropic medium | 11th International Topical Meeting on “OLC 2005”, Clearwater Beach on Sand Key, Florida, USA, p. 36 (2005)

A. V. Galstyan, R. S. Hakobyan, S. Harbour, T. V. Galstian

Thermal switch of near infrared sensitive holographic polymer dispersed liquid crystals | 10th International Topical Meeting on “OLC 2003”, Aussois, France, p. 26 (2003)