Prof. Ruyan Guo Profile

Prof. Ruyan Guo

Robert E. Clarke Endowed Professor at Univ of Texas at San Antonio

SPIE Involvement:

Conference Chair | Track Chair | Editor | Author | Student Chapter Advisor

Publications (55)

Proceedings Article | 5 October 2023 Paper

In-situ reactive inkjet synthesis of Zinc Oxide nanostructures processed via UV irradiation

Sean Garnsey, William Paul Flynn, Amar Bhalla, Ruyan Guo

Proceedings Volume 12682, 1268205 (2023) https://doi.org/10.1117/12.2677208

KEYWORDS: Zinc oxide, Printing, Ultraviolet radiation, Inkjet technology, Scanning electron microscopy, UV-Vis spectroscopy, Nanostructures, Crystals, Crystallization

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Proceedings Article | 5 October 2023 Paper

Inline photonic curing of inkjet printed cobalt ferrite-barium titanate nanocomposites

William Paul Flynn, Sean Garnsey, Maria Basurto Armijo, Amar Bhalla, Ruyan Guo

Proceedings Volume 12682, 1268204 (2023) https://doi.org/10.1117/12.2677949

KEYWORDS: Nanocomposites, Ultraviolet radiation, Near infrared, Printing, Inkjet technology, Cobalt, Nanoparticles, Scanning electron microscopy, Ferroelectric materials, Nanomaterials

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Proceedings Article | 20 August 2020 Presentation + Paper

Phase-transition temperature determination using optical spectroscopy in a rotating flow inside a scrape surface crystallizer

Carlos Acosta, Amar Bhalla, Ruyan Guo

Proceedings Volume 11498, 1149804 (2020) https://doi.org/10.1117/12.2567456

KEYWORDS: Liquids, Absorbance, Carbon monoxide, Temperature metrology, Crystals, Signal detection, Optical spectroscopy, Signal processing, Transmittance

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Proceedings Article | 10 September 2019 Paper

Achieving near-infrared deep tissue imaging via metal organic complex nanoparticles

Ye Wu, Jian Xu, Ruyan Guo

Proceedings Volume 11123, 111230Z (2019) https://doi.org/10.1117/12.2534826

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Proceedings Article | 10 September 2019 Paper

In-situ characterization of multi-phase flows in a dynamic scraped surface heat exchanger using optical techniques in the visible spectrum

Carlos Acosta, Amar Bhalla, Ruyan Guo

Proceedings Volume 11123, 111230Y (2019) https://doi.org/10.1117/12.2532655

KEYWORDS: Visible radiation, Spectroscopy, Optical properties, Industrial chemicals, Environmental monitoring, Crystals, Liquid crystals, Crystallography, Liquids, Absorbance

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Proceedings Article | 4 September 2018 Paper

Pyroelectric Energy Conversion from Lithium Tantalum Oxide (LiTaO3) Crystal Evaluated by Dynamic Optical Chynoweth Method and Converter Design

Sadaf Yusuf Tahhan, Shuza Binzaid, Amar Bhalla, Ruyan Guo

Proceedings Volume 10755, 1075515 (2018) https://doi.org/10.1117/12.2324077

KEYWORDS: Energy harvesting, Crystals, Energy efficiency, Lithium, Tantalum, Oxides, Capacitors

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SPIE Journal Paper | 30 October 2017

Terahertz attenuators based on dielectric stacks with alternating refractive indices

Moumita Dutta, Xomalin Peralta, Amar Bhalla, Ruyan Guo

OE, Vol. 56, Issue 10, 105104, (October 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.10.105104

KEYWORDS: Terahertz radiation, Dielectrics, Attenuators, Modulation, Refractive index, Crystals, Wave propagation, Thin films, Optical properties, Quantum cascade lasers

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Proceedings Article | 2 November 2016 Presentation

Achieving magneto-elasto-electroporation and cell transport using core-shell magnetoelectric nanoparticles (Conference Presentation)

Soutik Betal, Moumita Dutta, Binita Shrestha, Amit Saha, Liang Tang, Ananad Ramasubramanian, Amar Bhalla, Ruyan Guo

Proceedings Volume 9958, 99580A (2016) https://doi.org/10.1117/12.2238023

KEYWORDS: Nanoparticles, Magnetism, Ferroelectric materials, Coating, Confocal microscopy, Absorption, In vitro testing, Transmission electron microscopy, Atomic force microscopy, Acoustics

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Proceedings Article | 2 November 2016 Presentation

Multiferroic thin film characterization probed by terahertz transient pulses (Conference Presentation)

Moumita Dutta, Xomalin Peralta, Amar Bhalla, Ruyan Guo

Proceedings Volume 9958, 99580B (2016) https://doi.org/10.1117/12.2238174

KEYWORDS: Terahertz radiation, Ultrafast phenomena, Doping, Magnetism, Thin films, Phonons, Magnons, Ferroelectric materials, Lead, Iron

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Proceedings Article | 7 September 2016 Paper

High precision optical measurement of displacement and simultaneous determinations of piezoelectric coefficients

Bryan Gamboa, Madhuri Malladi, Ramya Vadlamani, Ruyan Guo, Amar Bhalla

Proceedings Volume 9958, 99581E (2016) https://doi.org/10.1117/12.2249422

KEYWORDS: Laser interferometry, 3D modeling, Optical testing, Heterodyning, Fiber lasers, Sensors, Ferroelectric materials, Statistical analysis, Doppler effect, Finite element methods

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Proceedings Article | 7 September 2016 Paper

Electric field biased Faraday Effect in Cr-doped BiFeO3 thin film

Brandon Young, Ruyan Guo, Amar Bhalla

Proceedings Volume 9958, 99581D (2016) https://doi.org/10.1117/12.2249421

KEYWORDS: Ferroelectric materials, Magnetism, Thin films, Magneto-optics, Absorption, Polarization, Refractive index, Electro optics, Garnet, Control systems

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Proceedings Article | 8 September 2015 Paper

Investigation of electrical, optical and structural properties of sputtered indium tin oxide thin film

Md. Tanvir Hasan, Amar Bhalla, Ruyan Guo

Proceedings Volume 9586, 95860J (2015) https://doi.org/10.1117/12.2188971

KEYWORDS: Transmittance, Sputter deposition, Oxygen, Thin films, Temperature metrology, Oxides, Surface roughness, Tin, Indium, Crystals

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Proceedings Article | 26 August 2015 Paper

Memristor memory element based on ZnO thin film structures

A. Poghosyan, E. Elbakyan, R. Guo, R. Hovsepyan

Proceedings Volume 9586, 95861C (2015) https://doi.org/10.1117/12.2190111

KEYWORDS: Zinc oxide, Diodes, Heterojunctions, Switching, Thin films, Lawrencium, Chemical elements, Resistance, Vacuum deposition, Oxygen

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Proceedings Article | 26 August 2015 Paper

Photoacoustic and magnetoelastic property of cobalt ferrite nanoparticles and its attenuation with barium titanate coating

Soutik Betal, Moumita Dutta, Edward Khachatryan, Luiz Cotica, Kelly Nash, Amar Bhalla, Ruyan Guo

Proceedings Volume 9586, 958609 (2015) https://doi.org/10.1117/12.2188979

KEYWORDS: Nanoparticles, Cobalt, Photoacoustic spectroscopy, Ferroelectric materials, Magnetism, Sensors, Signal attenuation, Coating, Water, Acoustics

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Proceedings Article | 26 August 2015 Paper

Terahertz electrical and optical properties of LiNbO3 single crystal thin films

Moumita Dutta, Carol Ellis, Xomalin Peralta, Amar Bhalla, Ruyan Guo

Proceedings Volume 9586, 958608 (2015) https://doi.org/10.1117/12.2188933

KEYWORDS: Thin films, Terahertz radiation, Crystals, Refractive index, Reflection, Absorption, Picosecond phenomena, Data modeling, Optical properties, Dielectrics

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Proceedings Article | 16 September 2014 Paper

Homodyne and heterodyne optical interferometry for frequency dependent piezoelectric displacement measurement

Keith Delahoussaye, Ruyan Guo, Amar Bhalla

Proceedings Volume 9200, 92001M (2014) https://doi.org/10.1117/12.2066736

KEYWORDS: Homodyne detection, Heterodyning, Piezoelectric effects, Interferometry, Ceramics, Signal detection, Interferometers, Sensors, Beam splitters, Optical interferometry

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Proceedings Article | 5 September 2014 Paper

Optical characterization of ferroelectric PZT thin films by variable angle spectroscopic ellipsometry

Md. Shafiqur Rahman, Carlos Garcia, Amar Bhalla, Ruyan Guo

Proceedings Volume 9200, 92000A (2014) https://doi.org/10.1117/12.2064658

KEYWORDS: Ferroelectric materials, Thin films, Refractive index, Crystals, Dielectrics, Silicon, Spectroscopic ellipsometry, Optical properties, Sol-gels, Lead

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Proceedings Article | 5 September 2014 Paper

Vibrometry analysis of electrooptical coupling near piezoelectric resonance

Robert McIntosh, Amar Bhalla, Ruyan Guo

Proceedings Volume 9200, 92001L (2014) https://doi.org/10.1117/12.2066735

KEYWORDS: Electro optics, Crystals, Doppler effect, Modulation, Vibrometry, Electro optical modeling, Beam splitters, Birefringence, Piezoelectric effects, Statistical modeling

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Proceedings Article | 5 September 2014 Paper

Photoconductivity of ZnO based granular structures

Armen Poghosyan, Natella Aghamalyan, Elbak Elbakyan, Ruyan Guo, Ruben Hovsepyan, Silva Petrosyan

Proceedings Volume 9200, 92001G (2014) https://doi.org/10.1117/12.2062954

KEYWORDS: Zinc oxide, Thin films, Crystals, Fourier transforms, Lithium, Head, Oxygen, Spatial frequencies, Gallium, Magnetism

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Proceedings Article | 28 September 2013 Paper

Time domain modeling of induced birefringence and phase shift in piezoelectric resonance enhanced electro-optic modulators

Robert McIntosh, Amar Bhalla, Ruyan Guo

Proceedings Volume 8847, 88471N (2013) https://doi.org/10.1117/12.2027173

KEYWORDS: Modulation, Electro optical modeling, Birefringence, Resonance enhancement, Refractive index, Phase shifts, Electro optics, Electrooptic modulators, Crystals, Finite element methods

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Proceedings Article | 25 September 2013 Paper

Electronic phase transitions in transparent zinc oxide thin films

A. Poghosyan, N. Aghamalyan, R. Guo, Y. Kafadaryan, R. Hovsepyan, S. Petrosyan

Proceedings Volume 8847, 88471S (2013) https://doi.org/10.1117/12.2027431

KEYWORDS: Annealing, Zinc oxide, Oxygen, Lithium, Transition metals, Semiconductors, Gallium, Zinc, Chemical species, Temperature metrology

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Proceedings Article | 25 September 2013 Paper

Ferroelectric memory element based on thin film field effect transistor

A. Poghosyan, N. Aghamalyan, E. Elbakyan, R. Guo, R. Hovsepyan

Proceedings Volume 8847, 88471R (2013) https://doi.org/10.1117/12.2027429

KEYWORDS: Polarization, Switching, Field effect transistors, Thin films, Picosecond phenomena, Binary data, Electrons, Zinc oxide, Heterojunctions, Lithium

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Proceedings Article | 15 October 2012 Paper

Finite element modeling of acousto-optic effect and optimization of the figure of merit

Robert McIntosh, Amar Bhalla, Ruyan Guo

Proceedings Volume 8497, 849703 (2012) https://doi.org/10.1117/12.956441

KEYWORDS: Acousto-optics, Refractive index, Acoustics, Adaptive optics, Gallium arsenide, Crystals, Zinc oxide, Finite element methods, Germanium, Diffraction

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Proceedings Article | 17 September 2011 Paper

Optical and electro-optic properties of potassium lithium tantalate niobate single crystals

Yang Li, Jun Li, Zhongxiang Zhou, Amar Bhalla, Ruyan Guo

Proceedings Volume 8120, 81201S (2011) https://doi.org/10.1117/12.904988

KEYWORDS: Crystals, Electro optics, Refractive index, Lithium, Potassium, Oscillators, Mach-Zehnder interferometers, Modulation, Nonlinear crystals, Dielectrics

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Proceedings Article | 8 September 2011 Paper

Periodical poling of lithium niobate crystals with Li-enriched surface layer

A. Poghosyan, I. Ghambaryan, R. Guo, E. Vardanyan

Proceedings Volume 8120, 812017 (2011) https://doi.org/10.1117/12.893038

KEYWORDS: Crystals, Lithium niobate, Lithium, Thin films, Switching, Annealing, Nonlinear crystals, Semiconducting wafers, Electrodes, Sol-gels

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Proceedings Article | 18 August 2010 Paper

Pyroelectric photodetector based on ferroelectric crystal-semiconductor thin film heterostructure

Armen Poghosyan, N. Aghamalyan, R. Guo, R. Hovsepyan, E. Vardanyan

Proceedings Volume 7781, 778117 (2010) https://doi.org/10.1117/12.863037

KEYWORDS: Crystals, Pyroelectric detectors, Heterojunctions, Field effect transistors, Thin films, Transistors, Infrared radiation, Photodetectors, Zinc oxide, Electrodes

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Proceedings Article | 28 August 2009 Paper

A dual-fiber modulation configuration based on new speckle volume holographic multiplexing technique

Hongbo Liu, Amar Bhalla, Ruyan Guo

Proceedings Volume 7420, 74201A (2009) https://doi.org/10.1117/12.828943

KEYWORDS: Crystals, Multiplexing, Structured optical fibers, Modulation, Laser crystals, Speckle, Holography, Holograms, Volume holography, Speckle pattern

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Proceedings Article | 28 August 2009 Paper

Anisotropic intensity profiles in ferroelectric LiNbO3 single crystal fibers

Hongbo Liu, Pape Sene, Ruyan Guo

Proceedings Volume 7420, 742019 (2009) https://doi.org/10.1117/12.828942

KEYWORDS: Crystals, Optical fibers, Beam propagation method, Laser crystals, Near field, Crystallography, Geometrical optics, Optical simulations, Glasses, Photonic crystal fibers

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Proceedings Article | 30 March 2009 Paper

Thin-film active nano-PWAS for structural health monitoring

Bin Lin, Victor Giurgiutiu, Amar Bhalla, Chonglin Chen, Ruyan Guo, Jiechao Jiang

Proceedings Volume 7292, 72921M (2009) https://doi.org/10.1117/12.814397

KEYWORDS: Thin films, Structural health monitoring, Nickel, Electrodes, Ferroelectric materials, Interfaces, Semiconducting wafers, Sensors, Phased arrays, Active sensors

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Proceedings Article | 2 September 2008 Paper

Modified sol-gel method for patterned lithium niobate thin film preparation

Armen Poghosyan, Ruyan Guo, Stepan Grigoryan, Aleksandr Manukyan, Eduard Vardanyan

Proceedings Volume 7056, 705614 (2008) https://doi.org/10.1117/12.793810

KEYWORDS: Crystals, Thin films, Lithium niobate, Lithium, Waveguides, Sol-gels, Integrated optics, Etching, Ultraviolet radiation, Sapphire

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Proceedings Article | 2 September 2008 Paper

Piezoelectric resonance enhanced electrooptic transmission in PZN-8PT single crystal

Ruyan Guo, Hongbo Liu, Gabriel Reyes, William Jamieson, Amar Bhalla

Proceedings Volume 7056, 705616 (2008) https://doi.org/10.1117/12.798354

KEYWORDS: Resonance enhancement, Electro optics, Crystals, Modulation, Transmittance, Geometrical optics, Spectroscopy, Dielectrics, Polarizers, Computer engineering

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Proceedings Article | 17 September 2007 Paper

Nanosecond electrical and optical pulses and self phase conjugation from photorefractive lithium niobate fibers and crystals

N. Kukhtarev, T. Kukhtareva, M. Curley, H. Jaenisch, Matthew Edwards, M. Gu, Z. Zhou, R. Guo

Proceedings Volume 6698, 66981Q (2007) https://doi.org/10.1117/12.752133

KEYWORDS: Crystals, Optical fibers, Laser crystals, X-rays, Nonlinear crystals, Continuous wave operation, Oscilloscopes, Phase conjugation, X-ray imaging, Sensors

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Proceedings Article | 13 September 2007 Paper

Stoichiometric lithium niobate thin films preparation by sol-gel method

Armen Poghosyan, Ruyan Guo, Alexandr Manukyan, Stepan Grigoryan

Proceedings Volume 6698, 66981C (2007) https://doi.org/10.1117/12.734353

KEYWORDS: Lithium niobate, Thin films, Crystals, Lithium, Sapphire, Sol-gels, Niobium, Zinc oxide, Transparent conducting films, Telecommunications

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Proceedings Article | 13 September 2007 Paper

Crosstalk noise in speckle-based volume holographic multiplexing

Hongbo Liu, Man Gu, Amar Bhalla, Ruyan Guo

Proceedings Volume 6698, 669819 (2007) https://doi.org/10.1117/12.738899

KEYWORDS: Multiplexing, Holograms, Diffraction, Speckle pattern, Modulation, Signal to noise ratio, Volume holography, Holographic materials, Diffraction gratings, Crystals

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Proceedings Article | 19 April 2007 Paper

Ferroelectric thin-film active sensors for structural health monitoring

Bin Lin, Victor Giurgiutiu, Zheng Yuan, Jian Liu, Chonglin Chen, Jiechao Jiang, Amar Bhalla, Ruyan Guo

Proceedings Volume 6529, 65290I (2007) https://doi.org/10.1117/12.714862

KEYWORDS: Thin films, Active sensors, Structural health monitoring, Nickel, Semiconducting wafers, Transmission electron microscopy, Sensors, Dielectrics, Electrodes, Interfaces

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Proceedings Article | 30 August 2006 Paper

Microwave electrooptic coefficient and modulation applications using ferroelectric single-crystal fibers

Chuanyong Huang, Jonathan Taylor, Hongbo Liu, Amar Bhalla, Ruyan Guo

Proceedings Volume 6314, 63140X (2006) https://doi.org/10.1117/12.683864

KEYWORDS: Crystals, Microwave radiation, Optical fibers, Electro optics, Modulation, Dielectrics, Laser crystals, Strontium, Barium, Refractive index

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Proceedings Article | 30 August 2006 Paper

Measurement of the piezoelectric properties of a zinc oxide single crystal microtube

John Fu, Hongbo Liu, Jimmy Wang, Yi-Chun Liu, Jiping Cheng, Amar Bhalla, Ruyan Guo

Proceedings Volume 6314, 63141U (2006) https://doi.org/10.1117/12.682900

KEYWORDS: Zinc oxide, Crystals, Piezoelectric effects, Optical testing, Mirrors, Interferometers, Optical amplifiers, Photodiodes, Crystallography, Signal detection

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Proceedings Article | 24 August 2006 Paper

A fast and secure phase-multiplexing technique based on random speckles modulation in multimode ferroelectric single crystal fiber for volume holographic storage

Hongbo Liu, John Fu, Man Gu, Amar Bhalla, Ruyan Guo

Proceedings Volume 6314, 63141L (2006) https://doi.org/10.1117/12.680937

KEYWORDS: Speckle, Crystals, Multiplexing, Modulation, Speckle pattern, Holograms, Refractive index, Volume holography, Holography, Laser crystals

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Proceedings Article | 7 October 2005 Paper

Effective algorithm for random mask generation used in secured optical data encryption and communication

Yuexin Liu, John Metzner, Ruyan Guo, Francis Yu

Proceedings Volume 5911, 59111G (2005) https://doi.org/10.1117/12.637664

KEYWORDS: Image encryption, Receivers, Computer security, Data communications, Image retrieval, Transmitters, Optical communications, Network security, Optical image encryption, Data transmission

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Proceedings Article | 6 October 2005 Paper

Frequency dependent electrooptic property of SBN single crystal

Chuanyong Huang, John Fu, Hongbo Liu, Yuexin Liu, Man Gu, Amar Bhalla, Ruyan Guo

Proceedings Volume 5911, 59110Y (2005) https://doi.org/10.1117/12.622995

KEYWORDS: Crystals, Electro optics, Modulation, Dielectrics, Laser crystals, Strontium, Optical amplifiers, Electrooptic modulators, Modulators, Polarizers

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Proceedings Article | 6 October 2005 Paper

Random phase mask coded multiplexing for high-density and secure holographic memory

Hongbo Liu, John Fu, Yuexin Liu, Bo Wang, Chuanyong Huang, Jimmy Wang, Ruyan Guo

Proceedings Volume 5911, 59110Z (2005) https://doi.org/10.1117/12.621653

KEYWORDS: Multiplexing, Holography, Crystals, Wavefronts, Holograms, Diffraction, Volume holography, Tolerancing, Laser crystals, Photomasks

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SPIE Journal Paper | 1 October 2005

Intelligent reduction of zero-order diffraction in Fourier optical systems

Yuexin Liu, Ruyan Guo, Francis Yu

OE, Vol. 44, Issue 10, 103602, (October 2005) https://doi.org/10.1117/12.10.1117/1.2065407

KEYWORDS: Diffraction, Signal processing, Modulators, Optical engineering, Spatial light modulators, Modulation, Energy efficiency, Optical signal processing, Fourier transforms, Transmittance

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Proceedings Article | 8 September 2005 Paper

Vector sensing with electronic fiber speckle pattern interferometry

Bo Wang, John Fu, Yuexin Liu, Ruyan Guo, Shizhuo Yin

Proceedings Volume 5911, 59110O (2005) https://doi.org/10.1117/12.620412

KEYWORDS: Speckle, Speckle pattern, Multimode fibers, Interferometry, Sensors, Fiber optics sensors, Phase shifts, Holography, Fringe analysis, Holograms

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