Zobrazeno 1 - 10
of 32
pro vyhledávání: '"B. A. Umanskii"'
Autor:
B. A. Umanskii, D. O. Rybakov, S. P. Palto, I. V. Kasyanova, Maxim V. Gorkunov, Vladimir V. Artemov, N. M. Shtykov, I. V. Simdyankin, A. R. Geivandov
Publikováno v:
Liquid Crystals. 47:384-398
The field-induced orientational transition in layers of cholesteric liquid crystals with spatially periodic modulation of the surface anchoring is studied by numerical simulations and exper...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c254bef473e24c740e8b54c7fb22b09
https://doi.org/10.1080/02678292.2019.1655169
https://doi.org/10.1080/02678292.2019.1655169
Publikováno v:
Quantum Electronics. 49:754-761
Fluorescence and lasing in a structure with an electric-field-induced spatially periodic director modulation in the plane of a planar-oriented layer of a cholesteric liquid crystal (CLC) is experimentally investigated. The thickness of the CLC layer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aa6c58cc7d1e2edb04b8d9ebde402c3
https://doi.org/10.1070/qel16898
https://doi.org/10.1070/qel16898
Publikováno v:
Liquid Crystals. 47:273-283
Electro-optical switching and the liquid crystal (LC) director distribution are studied in spatially periodic electric field for vertically aligned LC with negative dielectric anisotropy. T...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09813dad12867a9edc2553c69d53a7ea
https://doi.org/10.1080/02678292.2019.1643507
https://doi.org/10.1080/02678292.2019.1643507
Autor:
I. V. Simdyankin, B. A. Umanskii
Publikováno v:
Crystallography Reports. 64:437-442
The circular dichroism in cholesteric liquid crystals (CLCs) has been studied in the absorption bands of dissolved dichroic dyes possessing both the positive and negative linear dichroism. The circular dichroism is studied depending on the position o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b096f387b731c4afb2b2c199321b04b
https://doi.org/10.1134/s1063774519030283
https://doi.org/10.1134/s1063774519030283
Publikováno v:
Crystallography Reports. 64:305-310
The amplification of spontaneous fluorescence in a planar layer of nematic liquid crystal doped with DCM dye in the mode of waveguide light propagation has been studied. The gain reaches the value α = 0.0014 μm–1 at a pump radiation intensity of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6155c17cd12bfe94ff0cf50fff34e59a
https://doi.org/10.1134/s1063774519020275
https://doi.org/10.1134/s1063774519020275
Autor:
N. M. Shtykov, I. V. Simdyankin, A. R. Geivandov, S. P. Palto, Vladimir V. Artemov, B. A. Umanskii, Maxim V. Gorkunov, D. O. Rybakov
Publikováno v:
Optics letters. 45(15)
We report on experimental investigations of the lasing effect in novel chiral liquid crystal (CLC) systems with a deformed lying helix (DLH). The lasing is studied for both odd- and even-order field-induced stop-bands, which are characteristic exclus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::884897cf735a7f1e40356ff88c6ae237
https://pubmed.ncbi.nlm.nih.gov/32735290
https://pubmed.ncbi.nlm.nih.gov/32735290
Publikováno v:
Crystallography Reports. 63:633-640
Waveguide lasing in a layer of nematic liquid crystal (NLC) doped with a dye has been experimentally observed. A chromium micrograting with a period of 1.76 μm has been deposited on the surface one of the cell substrates to provide a distributed fee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83c007e14830f8c401c6b74bc7418e59
https://doi.org/10.1134/s1063774518040259
https://doi.org/10.1134/s1063774518040259
Autor:
S. A. Pikin, B. A. Umanskii
Publikováno v:
Crystallography Reports. 63:641-645
It is shown that a plane one-dimensional flexoelectric grid well simulates the processes of the nucleation of defects (dislocations) and an increase in their number in crystals under increasing mechanical stresses in the crystal lattice. The latter r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fa233266c748cd8add1719fe7b1981b
https://doi.org/10.1134/s1063774518040211
https://doi.org/10.1134/s1063774518040211
Autor:
B. A. Umanskii, I. V. Simdyankin
Publikováno v:
Crystallography Reports. 63:222-227
The electro-optic response in planar-aligned chiral nematic liquid crystals in an electric field oriented perpendicular to the helical structure axis is studied as a function of the magnitude and sign of the dielectric anisotropy of liquid crystal in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22a765f855fc18ff6774595ee49f7c26
https://doi.org/10.1134/s1063774518020268
https://doi.org/10.1134/s1063774518020268
Publikováno v:
Liquid Crystals. 45:1408-1414
Structures with a periodic in-plane liquid crystal director field modulation induced by an electric field are studied in cholesteric liquid crystals (CLCs). A phenomenon of the electric-field-induc...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::147ce32324162f7585b737069970cd54
https://doi.org/10.1080/02678292.2018.1441460
https://doi.org/10.1080/02678292.2018.1441460