Zobrazeno 1 - 10
of 620
pro vyhledávání: '"Lavrentovich, Oleg D"'
Autor:
Arachchige, Mahesha Kodithuwakku, Siddiquee, Zakaria, Baza, Hend, Twieg, Robert, Lavrentovich, Oleg D., Jákli, Antal
The dynamics of swimming bacteria depend on the properties of their habitat media. Recently it was shown that the motion of swimming bacteria dispersed directly in a non-toxic water-based lyotropic chromonic liquid crystal can be controlled by the di
Externí odkaz:
http://arxiv.org/abs/2412.11877
Autor:
Basnet, Bijaya, Paladugu, Sathyanarayana, Kurochkin, Oleksandr, Buluy, Oleksandr, Aryasova, Natalie, Nazarenko, Vassili G., Shiyanovskii, Sergij V., Lavrentovich, Oleg D.
Electric field-induced splay of molecular orientation, called the Fr\'eedericksz transition, is a fundamental electro-optic phenomenon in nonpolar nematic liquid crystals. In a ferroelectric nematic NF with a spontaneous electric polarization P, the
Externí odkaz:
http://arxiv.org/abs/2412.09553
Publikováno v:
Crystals 2024, 14, 1058
Spatially varying alignment of liquid crystals is essential for research and applications. One widely used method is based on the photopatterning of thin layers of azo-dye molecules, such as Brilliant Yellow (BY), that serve as an aligning substrate
Externí odkaz:
http://arxiv.org/abs/2411.13835
Autor:
Kumari, Priyanka, Kurochkin, Olexandr, Nazarenko, Vassili G., Lavrentovich, Oleg D., Golovaty, Dmitry, Sternberg, Peter
Domain structure of a fluid ferroelectric nematic is dramatically different from the domain structure of solid ferroelectrics since it is not restricted by rectilinear crystallographic axes and planar surface facets. We demonstrate that thin films of
Externí odkaz:
http://arxiv.org/abs/2411.12903
Publikováno v:
Opt. Express 32, 40274-40282 (2024)
Nematic liquid crystals exhibit nanosecond electro-optic response to an applied electric field which modifies the degree of orientational order without realigning the molecular orientation. However, this nanosecond electrically-modified order paramet
Externí odkaz:
http://arxiv.org/abs/2410.22441
Autor:
Haputhanthrige, Nilanthi P., Paladugu, Sathyanarayana, Lavrentovich, Maxim O., Lavrentovich, Oleg D.
Publikováno v:
Physical Review E 109, 064703 (2024)
Linear defects such as dislocations and disclinations in ordered materials attract foreign particles since they replace strong elastic distortions at the defect cores. In this work, we explore the behavior of isotropic droplets nucleating at singular
Externí odkaz:
http://arxiv.org/abs/2406.10684
Autor:
Adaka, Alex, Rajabi, Mojtaba, Haputhantrige, Nilanthi, Sprunt, Samuel, Lavrentovich, Oleg D., Jakli, Antal
The recently discovered ferroelectric nematic (NF) liquid crystals (LC) have been reported to show an extraordinarily large value of the real part of the dielectric constant at low frequencies. However, it was argued by Clark et al in Physical Review
Externí odkaz:
http://arxiv.org/abs/2406.04698
Autor:
Iadlovska, Olena S., Thapa, Kamal, Rajabi, Mojtaba, Mrukiewicz, Mateusz, Shiyanovskii, Sergij V., Lavrentovich, Oleg D.
An oblique helicoidal state of a cholesteric liquid crystal (ChOH) is capable of continuous change of the pitch P in response to an applied electric field. Such a structure reflects 50% of the unpolarized light incident along the ChOH axis in the ele
Externí odkaz:
http://arxiv.org/abs/2404.08768
Autor:
Thapa, Kamal, Iadlovska, Olena S., Basnet, Bijaya, Wang, Hao, Paul, Ayusha, Gleeson, James T., Lavrentovich, Oleg D.
We explore the structure and magnetic field response of edge dislocations in Grandjean-Cano wedge cells filled with chiral mixtures of the ferroelectric nematic mesogen DIO. Upon cooling, the ordering changes from paraelectric in the cholesteric phas
Externí odkaz:
http://arxiv.org/abs/2403.20229
Autor:
Rajabi, Mojtaba, Turiv, Taras, Li, Bing-Xiang, Baza, Hend, Golovaty, Dmitry, Lavrentovich, Oleg D.
Electrophoresis is the motion of particles relative to a surrounding fluid driven by a uniform electric field. In conventional electrophoresis, the electrophoretic velocity grows linearly with the applied field. Nonlinear effects with a quadratic spe
Externí odkaz:
http://arxiv.org/abs/2403.11049