Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Oleg P. Pishnyak"'
Publikováno v:
Journal of Molecular Liquids. 164:132-142
We study the dynamics of anisotropic aggregation of spherical colloidal particles with dipolar interactions, dispersed in a nematic liquid crystal. The director is perpendicular to the surface of spheres so that each particle creates a dipolar distor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::278a94b593eada8d99ae0be31374d03c
https://doi.org/10.1016/j.molliq.2011.09.005
https://doi.org/10.1016/j.molliq.2011.09.005
Autor:
Oleg D. Lavrentovich, Liubov Kreminska, J. J. Pouch, Bruce K. Winker, Oleg P. Pishnyak, Felix A. Miranda
Publikováno v:
Molecular Crystals and Liquid Crystals. 433:279-295
We describe digital beam deflectors (DBDs) based on liquid crystals. Each stage of the device comprises polarization rotator and birefringent prism deflector. We used prisms made of the uniaxial smectic A (SmA) liquid crystal and a solid yttrium orth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45b8cfaf8b89cd6ced2ba1495f84c0be
https://doi.org/10.1080/15421400590955587
https://doi.org/10.1080/15421400590955587
Autor:
D. Fedorenko, Mikhail V. Vasnetsov, S. Slussarenko, Marat S. Soskin, Yuriy Reznikov, Oleg P. Pishnyak
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 324:25-30
For the first time we report the study of self-induced nonlinear lens in a liquid crystal cell with azo dye and the phase dislocations on a wave front of the beam passing through the lens. Depending on the experimental conditions, circular edge dislo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3eb2317e6e2a4bad2e0c0b764a69cec6
https://doi.org/10.1080/10587259808047129
https://doi.org/10.1080/10587259808047129
Electrophoresis is a motion of charged dispersed particles relative to a fluid in a uniform electric field. The effect is widely used to separate macromolecules, to assemble colloidal structures, to transport particles in nano- and micro-fluidic devi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f932977c0fe84f9ac903036c55f084fe
Publikováno v:
Physical review letters. 106(4)
We design a nematic collider for controlled out-of-equilibrium anisotropic aggregation of spherical colloidal particles. The nematic surrounding imparts dipolar interactions among the spheres. A bidirectional backflow of the nematic liquid crystal (N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db1921d94d82e2e7f52e99a236af86e2
https://pubmed.ncbi.nlm.nih.gov/21405363
https://pubmed.ncbi.nlm.nih.gov/21405363
Publikováno v:
Physical review letters. 99(12)
We study electric-field-induced dynamics of colloids in a nematic cell, experimentally and by computer simulations. Solid particles in the nematic bulk create director distortions of dipolar type. Elastic repulsion from the walls keeps the particles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34bcfad2de250c86828e95f2ec19db42
https://pubmed.ncbi.nlm.nih.gov/17930554
https://pubmed.ncbi.nlm.nih.gov/17930554
Publikováno v:
Physical Review Letters. 93
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af54c7f7acc66c7ddcebe3b76bdcedbf
https://doi.org/10.1103/physrevlett.93.109401
https://doi.org/10.1103/physrevlett.93.109401
Publikováno v:
Physical Review E. 65
We study phase separation from a nematic liquid crystal with spatially nonuniform director gradients. Particles of a phase-separated component, which is either an isotropic fluid (silicone oil) or a nonmesogenic photopolymer, accumulate in the region
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9d01b146dc370ce90d2c6dc382e0025
https://doi.org/10.1103/physreve.65.060701
https://doi.org/10.1103/physreve.65.060701
Autor:
Mikhail V. Vasnetsov, Vyacheslav N. Gorshkov, Oleg Yaroshchuk, Marat S. Soskin, Oleg P. Pishnyak, Yuri Reznikov
Publikováno v:
SPIE Proceedings.
We report the nucleation of wave front phase dislocations in a Gaussian beam with initially smooth wave front experienced the self-action in a nematic liquid crystal cell. It is shown experimentally that the structure of the aberrational rings appear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16c194df81c8a9ec20d07306ddc750c0
https://doi.org/10.1117/12.370432
https://doi.org/10.1117/12.370432
Autor:
Oleg P. Pishnyak, Oleg D. Lavrentovich
Publikováno v:
Applied Physics Letters. 89:251103
The authors demonstrate electrically controlled negative refraction at the interface between an isotropic material and a uniaxial nematic liquid crystal, in which the optic axis is designed to make a large angle with the interface. Depending on the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c26f163493c59e0fdb7e06473299c349
https://doi.org/10.1063/1.2408658
https://doi.org/10.1063/1.2408658