Výsledky vyhledávání - "A. H. Gevorgyan"

Akademický článek

Preliminary investigations of parasite contamination of water sources in Armenia

Autor: Oleg V. Shcherbakov, Sargis A. Aghayan, Hasmik Sh. Gevorgyan, Tigran A. Abgaryan, Ruzanna H. Gevorgyan, Alejandro Jiménez-Meléndez, Lucy J. Robertson

Publikováno v: Food and Waterborne Parasitology, Vol 34, Iss , Pp e00221- (2024)

The intestinal protozoan parasites, Cryptosporidium and Giardia, are known to have a global distribution, infecting and causing disease in a range of hosts, including people, livestock, pets, and wildlife. However, data from some regions is very spar

Externí odkaz: https://doaj.org/article/962813f89a924bd6a7865be61febd6b9

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Akademický článek

Design of a Highly Sensitive Detector Using a Ternary Photonic Crystal (PC) Based on Titanium Nitride Sandwiched between Si and SiO2 for the Creatinine Concentration Detection in the Blood Serum

Autor: Malek G. Daher, Youssef Trabelsi, Abinash Panda, Ashot H. Gevorgyan, Khedr M. Abohassan, Lassaad K. Smirani, Baraa Riyadh Altahan, Ahmed Nabih Zaki Rashed

Publikováno v: Optics, Vol 3, Iss 4, Pp 447-461 (2022)

It is very important to design a rapid and sensitive device for the creatinine concentration detection due to it being one of the most considerable benchmarks for efficient kidney working. Here, a novel biophotonic sensor using one-dimensional ternar

Externí odkaz: https://doaj.org/article/357bd60f4b65472bb09697e6f9164973

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Akademický článek

The Determination of the Sensitivity of Refractive Index Sensors

Autor: Ilya M. Efimov, Nikolay A. Vanyushkin, Ashot H. Gevorgyan

Publikováno v: Photonics, Vol 11, Iss 1, p 56 (2024)

A new approach to determining the sensitivity of refractive index sensors is proposed. It has been shown that relative and absolute sensitivity show different results, and also, for the first time, it is demonstrated that relative sensitivity has adv

Externí odkaz: https://doaj.org/article/a6861639c4174cada585a62e85356462

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Akademický článek

Light-Induced Self-Oscillations and Spoiling of the Bragg Resonance Due to Nonlinear Optical Propagation in Heliconical Cholesteric Liquid Crystals

Autor: Ashot H. Gevorgyan, Francesco Simoni

Publikováno v: Photonics, Vol 9, Iss 11, p 881 (2022)

In a recent paper, we have reported the results of a study of the nonlinear light propagation of a beam traveling along the helix direction of a heliconical cholesteric liquid crystal, showing that optical reorientation leads to instabilities in the

Externí odkaz: https://doaj.org/article/c58d026e51ec400f83323fbea1d91a78

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Akademický článek

Onset of Optical Instabilities in the Nonlinear Optical Transmission of Heliconical Cholesteric Liquid Crystals

Autor: Ashot H. Gevorgyan, Francesco Simoni

Publikováno v: Photonics, Vol 9, Iss 3, p 139 (2022)

We report the result of an accurate calculation of optical transmission of a light beam traveling along the helix direction of a heliconical cholesteric liquid crystal when the light intensity is affecting the director orientation by an effective opt

Externí odkaz: https://doaj.org/article/f9d56312dc114060a358352d4e600d7b

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Peculiarities of the Electromagnetic Field Distribution Inside a 1D Photonic Crystal with a Defect Layer

Autor: I. M. Efimov, N. A. Vanyushkin, A. H. Gevorgyan

Publikováno v: Bulletin of the Russian Academy of Sciences: Physics. 86:S60-S65

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b19eadfcf564f9ddfbf5794d8a4a45e0
https://doi.org/10.3103/s1062873822700393

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Akademický článek

Multimode Robust Lasing in a Dye-Doped Polymer Layer Embedded in a Wedge-Shaped Cholesteric

Autor: Tatevik M. Sarukhanyan, Hermine Gharagulyan, Mushegh S. Rafayelyan, Sergey S. Golik, Ashot H. Gevorgyan, Roman B. Alaverdyan

Publikováno v: Molecules, Vol 26, Iss 19, p 6089 (2021)

Cholesteric liquid crystals (CLCs) with induced defects are one of the most prominent materials to realize compact, low-threshold and tunable coherent light sources. In this context, the investigation of optical properties of induced defect modes in

Externí odkaz: https://doaj.org/article/1b74e1099bdf491ca01f15fbc8d82552

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