Tigran Galstian

• Centre d'optique, photonique et laser

Financements des 2 dernières années

• Alik Mirzoyan, Doctorat en physique
• Maria Hovakimyan, Doctorat en physique
• Vahagn Muradyan, Doctorat en physique

Encadrements des 5 dernières années

• Alexis Maillard, Doctorat en physique
• Anastasiia Pusenkova, Doctorat en physique
• Frédéric Gauvin, Maîtrise en physique - avec mémoire
• Gabriel Tayama, Doctorat en physique
• Ilham Touati, Maîtrise en physique - avec mémoire
• Loïc Tabourin, Doctorat en physique
• Mayra Vargas Morales, Stage postdoctoral en biophotonique
• Simon André Kaser, Doctorat en chimie
• Zhanna Zemska, Doctorat en physique

Travaux de recherche des 5 dernières années

Dynamic presbyopia correction in the macular field of view by using a liquid crystal lens Biomedical Optics Express, 2025. Louis Bégel, Tigran Galstian. DOI 10.1364/BOE.557747

Loss-less passive polarization rectifier design with minimal etendue and size increase Optics Communications, 2025. Zohrabyan, A., Bagramyan, A., Galstian, T.. DOI 10.1016/j.optcom.2024.131269

Motion-less depth-selective optogenetic probe using tapered fiber and an electrically tuneable liquid crystal steering element Biomedical Optics Express, 2025. Boissonneault, W., Lemieux, M., Bretzner, F., Galstian, T.. DOI 10.1364/BOE.544388

Liquid crystal cell assembly and method for detection enhancement US Patent, 2024. Tigran Galstian, Van Vladimir Galstian.

Liquid crystal cell assembly and method for detection enhancement US Patent, 2024. Tigran Galstian, Van Vladimir Galstian.

Formation Mechanisms of Striae and Birefringence in Silicate-Aluminum-Phosphate Hybrid Sol-Gel Materials Processed via Laser Scan Photopolymerization International Sol-Gel Society (ISGS), 2024. Gabriel Tayama, Sandra Helena Messaddeq, Tigran Galstian, Younes Messaddeq.

Applications of liquid crystal devices in biomedical research Proceedings Volume PC13121, Liquid Crystals XXVIII, 2024. Loic Tabourin, Fréderic Bretzner, W. Boissonneault, M. Hovakimyan, S. Thibault, Tigran Galstian. DOI 10.1117/12.3028119

Liquid crystals in biomedicine; How LCs can help us to better understand the biological tissue Liquid Crystal Institute, 2024. Tigran Galstian.

Lighting liquid crystals Centre Intégré de Cancérologie (CIC), 2024. Tigran Galstian.

Liquid Crystal Dynamically Steerable GHz and THz Devices for Automotive and Other Applications Proceedings International Radar Symposium, 2024. Pusenkova, A., Meinecke, M.-M., Kurz, H.G., Gisder, T., Schroeder, H., Galstian, T..

Towards a mini-endoscope design with spatially selective excitation and imaging Biomedical Optics Express, 2024. Tabourin, L., Bretzner, F., Galstian, T.. DOI 10.1364/BOE.512124

Artificial lighting affects the predation performance of the predatory bug Orius insidiosus (Say) against the Western flower thrips Frankliniella occidentalis (Pergande) bioRxiv, 2024. Morgane L. Canovas, Paul K. Abram, Jean-François Cormier, Tigran Galstian, Martine Dorais. DOI 10.1101/2024.10.01.616144

Passive rectification of the polarization of fluorescence light by photon recycling Optics Letters, 2024. Boissonneault, W., Bah, S.T., Galstian, T.. DOI 10.1364/OL.532365

Microflow sensing and control using an in-channel birefringent biomembrane Lab on a Chip, 2024. Jia, N., Deng, T., Larouche, C., Galstian, T., Bégin-Drolet, A., Greener, J.. DOI 10.1039/d3lc00985h

Statistically Optimal Generative Modeling with Maximum Deviation from the Empirical Distribution Proceedings of Machine Learning Research, 2024. Vardanyan, E., Hunanyan, S., Galstyan, T., Minasyan, A., Dalalyan, A..

Terahertz phase imaging of large-aperture liquid crystal modulator with ITO interdigitated electrode Journal of Physics D: Applied Physics, 2024. Le Bourlout, A., Pusenkova, A., Lafrenière-Greig, J., Ropagnol, X., Galstian, T., Blanchard, F.. DOI 10.1088/1361-6463/ad7a87

Lightweight mini-endoscope for two color imaging of neural activities with large field of view Results in Optics, 2024. Tabourin, L., Bretzner, F., Galstian, T.. DOI 10.1016/j.rio.2024.100732

Tunable liquid crystal lens with symmetric bipolar operation Optics Letters, 2024. Zemska, Z., Galstian, T.. DOI 10.1364/OL.519493

Surface and bulk photo patterning of azobenzene molecules Photo alignment, technology and applications, 2023. Tigran Galstian.

A microfluidic bio membrane for flow rate metering ChemRxiv, 2023. Nan Jia, Tianyang Deng, Charles Larouche, Tigran Galstian, André Bégin-Drolet, Jesse Greener. DOI 10.26434/chemrxiv-2023-w7vzl

Carotte et vision l'histoire d'une carotte et de l'amélioration de la vision humaine Conférence Grand Publique de l’Université Laval, 2023. Tigran Galstian.

L’utilisation de la carotte pour la vision Conférence Grand Publique de l'Université Laval, 2023. Tigran Galstian.

Recent progress of applications of liquid crystals in lighting International Research Project (IRP) Lumière Matière Aquitaine Québec (LuMAQ), 2023. Tigran Galstian.

Particle transport by electric field induced gradient of molecular order; how neurons talk Yerevan State University, 2023. Tigran Galstian.

Liquid crystal adaptive optical components for light manipulation and sensing International Conference on Laser Physics, 2023. Tigran Galstian.

Statistically Optimal Generative Modeling with Maximum Deviation from the Empirical Distribution ArXiv, 2023. Elen Vardanyan, Sona Hunanyan, Tigran Galstyan, Arshak Minasyan, Arnak Dalalyan. DOI 10.48550/arXiv.2307.16422

Electrically tunable element to relax optical design tolerances and add more functionalities OSA Optical Design and Fabrication Congress, 2023. Zhanna Zemska, Tigran Galstian. DOI 10.1117/12.2692513

Electrically tunable large aperture lenses using nematic liquid crystals Novel Optical Materials and Applications (NOMA), 2023. O. Sova, Armen Zohrabyan, Vladimir Presniakov, Aram Bagramyan, Tigran Galstian.

Large aperture electrically tunable lenses Photonics North, 2023. O. Sova, Vladimir Presniakov, Armen Zohrabyan, Tigran Galstian.

Universal electrically tunable liquid crystal device for photonic applications Ashtarak Physics Institute, 2023. Tigran Galstian.

Scientific research and industrial applications (commercialization) of liquid crystals Yerevan State University, 2023. Tigran Galstian.

Du développement de matériaux optiques à la commercialisation de produits grand public : un véritable défi Forum québécois sur les matériaux avancés, 2023. Tigran Galstian.

Matching Map Recovery with an Unknown Number of Outliers ArXiv, 2023. Arshak Minasyan, Tigran Galstian, Sona Hunanyan, Arnak Dalalyan. DOI 10.48550/arXiv.2210.13354

Wavefront control capability in a modal lens with segmented circular peripheral electrodes Applied Optics, 2023. Tabourin, L., Brousseau, D., Thibault, S., Galstian, T.. DOI 10.1364/AO.501953

Successes and challenges in the development of liquid crystal devices for imaging, vision and lighting Optics of Liquid Crystals Conference, 2023. Tigran Galstian.

Dynamic beam shaping for LED lighting Applied Optics, 2023. Presniakov, V., Zohrabyan, A., Sova, O., Bassene, S., Cotovanu, M., Bagramyan, A., Khodadad, B., Killick, T., Galstian, T.. DOI 10.1364/AO.504030

Theoretical study of the reaction–diffusion model of a three-component photopolymerizable system taking into account the shrinking effect Results in Optics, 2023. Bielykh, S.P., Galstian, T.V., Reshetnyak, V.Y.. DOI 10.1016/j.rio.2023.100389

Optimality of the Least Sum of Logarithms in the Problem of Matching Map Recovery in the Presence of Noise and Outliers Armenian Journal of Mathematics, 2023. Galstyan, T., Minasyan, A.. DOI 10.52737/18291163-2023.15.5-1-9

Characterization of Active Liquid Crystal With Continuous Terahertz Waves 2023 Photonics North, PN 2023, 2023. Bourlout, A.L., Pusenkova, A., Zhuldybina, M., Ropagnol, X., Galstian, T., Blanchard, F.. DOI 10.1109/PN58661.2023.10223018

Large diameter electrically tunable lens for ophthalmic distance accommodation Biomedical Optics Express, 2023. Sova, O., Presniakov, V., Zohrabyan, A., Bassene, S., Cotovanu, M., Bagramyan, A., Khodadad, B., Galstian, T.. DOI 10.1364/BOE.501952

Simple electrically tunable liquid crystal spatial phase modulator Optics Express, 2023. Zemska, Z., Galstian, T.. DOI 10.1364/OE.483736

Characterization of active liquid crystal: comparison using continuous and time domain terahertz techniques International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 2023. Bourlout, A.L., Pusenkova, A., Zhuldybina, M., Ropagnol, X., Gisder, T., Meinecke, M.-M., Schroeder, H., Kurz, H.G., Galstian, T., Blanchard, F.. DOI 10.1109/IRMMW-THz57677.2023.10299210

Adaptive lens for foveal vision, imaging, and projection over large clear apertures Optics Express, 2023. Bégel, L., Khodadad, B., Galstian, T.. DOI 10.1364/OE.476396

Predators under spotlights ! Behavioral responses of Orius insidiosus to artifical light spectra and intensities combinations Entomological Society of America annual meeting, 2022. Morgane Canovas, Jonathan Levesque, Tigran Galstian, Paul Abram, Martine Dorais.

Coup de projecteur sur les prédateurs! La composition spectrale de la lumière détermine la performance de prédation du généraliste Orius insidiosus (Say) 149e Réunion Annuelle Société d’Entomologie du Québec, 2022. Morgane Canovas, Jonathan Levesque, Tigran Galstian, Paul Abram, Martine Dorais.

Focus-tunable microscope for imaging small neuronal processes in freely moving animals 6th International Symposion Frontiers in Neurophotonics, 2022. Loïc Tabourin, Arutyun Bagramyan, Ali Rastqar, Narges Karimi, Frédéric Bretzner, Tigran Galstian.

Optimal detection of the feature matching map in presence of noise and outliers ArXiv, 2022. Tigran Galstian, Arshak Minasyan, Arnak Dalalyan. DOI 10.48550/arXiv.2106.07044 , DOI 10.1214/22-EJS2076

Recent progress in the development of electrically controllable lenses and their applications International Conference on Laser Physics, 2022. Zhanna Zemska, P. Larochelle, Tigran Galstian.

Can we control the trans-membrane ion exchange by using amphiphilic Azobenzene molecules ? Society of Photographic Instrumentation Engineers (SPIE) Annual Symposium on Optics and Photonics, 2022. Ilham Touati, Yue Zhao, Tigran Galstian.

Universal liquid crystal (lens) element for focusing, steering and more Society of Photographic Instrumentation Engineers (SPIE) Annual Symposium on Optics and Photonics, 2022. Zhanna Zemska, J. Stevens, Tigran Galstian.

Towards enlightened choices for both natural enemies and plants! Screening of artificial light conditions favoring predation & their effect on selected phytohormones International Horticultural Congress (IHC), 2022. Morgane Canovas, Adam Barrada, Jonathan Levesque, Tigran Galstian, Paul Abram, Martine Dorais.

Recent progress in large aperture liquid crystal lenses International Liquid Crystal Conference, 2022. Tigran Galstian.

Parameter control for 3D printing in silica-aluminium-phosphate hybrid material SolGel, 2022. Gabriel Tayama, Silvia Santagneli, Sandra Messaddeq, Tigran Galstian, Younès Messaddeq.

Predators under spotlights ! Behavioral responses of Orius insidiosus to artificial light quality and intensity: first step towards selection of light favoring predator in a tri-trophic system International Congress of Entomology (ICE), 2022. M. Canovas, P. Galarneau, Tigran Galstian, P. Abram, M. Dorais.

Recent advances in liquid crystal adaptive lenses for lighting Electronic Displays Conference, 2022. Tigran Galstian.

Comportement électro-optique des cristaux liquides dans des capillaires en vue du développement de dispositifs optiques fibrés multimatériaux AFCAS, 2022. Alice Goillot, Marc Dussauze, Younes Messaddeq, Tigran Galstian.

Multifunctional optical components based on nematic liquid crystals Novel Optical Materials and Applications (NOMA), 2022. Zhanna Zemska, Tigran Galstian.

Poling micrométrique de surface vitreuse par plasma : un nouvel outil pour l'alignement multi-domaines de cristaux liquides ACFAS, 2022. Alexis Maillard, Marc Dussauze, Tigran Galstian.

All-fiber, dynamically tunable, polarization filter based on liquid crystal filled nano-channels Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XV, 2022. Abdullah Rahnama, Tigran Dadalyan, Keivan Mahmoud Aghdami, Tigran Galstian, Peter R. Herman. DOI 10.1117/12.2609196

How to imprison a bacterium? And why? Science Talks Armenia, 2022. Tigran Galstian.

Electrically variable liquid crystal lens with spiral electrode Optics Communications, 2022. Pusenkova, A., Sova, O., Galstian, T.. DOI 10.1016/j.optcom.2021.127783

Optical design challenges of subnivean camera trapping under extreme Arctic conditions Arctic Science, 2022. Pusenkova, A., Poirier, M., Kalhor, D., Galstian, T., Gauthier, G., Maldague, X.. DOI 10.1139/as-2021-0012

Electrically tunable lens with a non-monotonic wavefront control capability Optics Letters, 2022. Zemska, Z., Galstian, T.. DOI 10.1364/OL.465018

Towards enlightened choices for both natural enemies and plants! Screening of artificial light conditions favoring bug predation & their effect on selected phytohormones International Symposium on Sustainable Control of Pests and Diseases, 2022. Morgane Canovas, Adam Barrada, Jonathan Levesque, Tigran Galstian, Martine Dorais.

Electrically tunable liquid crystal lens with a serpentine electrode design Optics Letters, 2022. Stevens, J., Galstian, T.. DOI 10.1364/OL.447853

Plasma assisted micro poling of glassy surfaces: a new tool to achieve liquid crystal multi-domain alignments [Invited] Optical Materials Express, 2022. Goillot, A., Maillard, A., Galstian, T., Messaddeq, Y., Adamietz, F., Rodriguez, V., Dussauze, M.. DOI 10.1364/OME.459498

Failure Modes of Domain Generalization Algorithms Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2022. Galstyan, T., Harutyunyan, H., Khachatrian, H., Steeg, G.V., Galstyan, A.. DOI 10.1109/CVPR52688.2022.01849

Comparative subject study of an electrically tunable liquid crystal, a monofocal, and an Extended depth-of-focus (EDOF) is a new intraocular lens (IOL) EDOF IOL OWLS 16: 16th International Conference on Optics Within Life Sciences, 2022. Karsten Sperlich, Ariane Dierke, Timea Koch, Sebastian Bohn, Heinrich Stolz, Rudolf F Guthoff, Tigran Galstian, Oliver Stachs.

Failure Modes of Domain Generalization Algorithms arXiv, 2021. Tigran Galstian, Hrayr Harutyunyan, Hrant Khachatrian, Greg Ver Steeg, Aram Galstyan. DOI 10.48550/arXiv.2111.13733

Liquid Crystals for Adaptive Imaging Harvard Medical School, 2021. Tigran Galstian.

Colors, how they are created and used Science Talks Armenia, 2021. Tigran Galstian.

Molecular control enables smart photonic systems Réunion annuelle de LIA, 2021. Tigran Galstian.

Controllable liquid crystal layered Fresnel lens device US Patent, 2021. Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Aram Bagramyan, Armen Zohrabyan, Simon Careau.

Towards enlightened tools for biological control! Manipulate supplemental lighting to favour natural predator’s control while maintaining crops’ performances Canadian Greenhouse Conference (CGC), 2021. Morgane Canovas, Pierre Galarneau, Tigran Galstian, Paul Abram, Martine Dorais.

In-fiber switchable polarizer by capillary-aligned liquid crystals Optics of Liquid Crystals, 2021. Abdullah Rahnama, Tigran Dadalyan, Keivan Mahmoud Aghdami, Tigran Galstian, Peter R. Herman.

Vehicle headlight beam control having a liquid crystal driving circuit and liquid crystal broadening device US Patent, 2021. Tigran Galstian.

Control of bacteria movement by using photo responsive media SPIE Annual Symposium on Organic, photonics, and electronics, 2021. Tigran Galstian, Ismael Duchesne. DOI 10.1117/12.2595634

Investigating the role of the “mechanical” deformation of Azobenzene molecules for biological control SPIE Annual Symposium on Organic, photonics, and electronics, 2021. I. Duchesne, Tigran Galstian, F. Fabbry, Luca Sorelli, Denis Rodrigue, Mario Fafard. DOI 10.1117/12.2595624

Extreme arctic conditions Canadian association of physicists (CAP) Virtual Congress, 2021. Anastasiia Pusenkova, Tigran Galstian, Davood Kalhor, Mathilde Poirier, Gilles Gauthier, Mario Fafard.

Dynamic beam shaping by using liquid crystals: The lighting quality Photonics North, 2021. Armen Zohrabyan, Vladimir Presniakov, Aram Bagramyan, Tigran Galstian.

The story of a carrot and improved human vision Science Talks Armenia, 2021. Tigran Galstian.

In-fiber polarization control using nematic liquid crystal in nano-capillary bragg grating array 2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings, 2021. Rahnama, A., Dadalyan, T., Aghdami, K.M., Galstian, T., Herman, P.R.. DOI 10.1364/cleo_si.2021.sm1p.3

A Camera Trap to Reveal the Obscure World of the Arctic Subnivean Ecology IEEE Sensors Journal, 2021. Kalhor, D., Poirier, M., Pusenkova, A., Maldague, X., Gauthier, G., Galstian, T.. DOI 10.1109/JSEN.2021.3122203

In-Fiber Switchable Polarization Filter Based on Liquid Crystal Filled Hollow-Filament Bragg Gratings Advanced Optical Materials, 2021. Rahnama, A., Dadalyan, T., Mahmoud Aghdami, K., Galstian, T., Herman, P.R.. DOI 10.1002/adom.202100054

Photodynamic control of bacterial motility by means of azobenzene molecules Journal of Photochemistry and Photobiology, 2021. Duchesne, I., Galstian, T., Sorelli, L., Rodrigue, D., Fabbri, F., Fafard, M.. DOI 10.1016/j.jpap.2021.100074

Focus-tunable microscope for imaging small neuronal processes in freely moving animals Photonics Research, 2021. Arutyun Bagramyan, Loïc Tabourin, Ali Rastqar, Narges Karimi, Frédéric Bretzner, Tigran Galstian. DOI 10.1364/PRJ.418154 , DOI 10.1101/2020.10.31.363507