Active volcanoes are associated with microearthquake (MEQ) hypocenters that form plane-oriented cluster distributions. These are faults delineating a magma injection system of dykes and sills. The ...Frac-Digger program was used to track fracking faults in the Kamchatka active volcanic belt and fore-arc region of Russia. In the case of magma laterally injected from volcanoes into adjacent structures, high-temperature hydrothermal systems arise, for example at Mutnovsky and Koryaksky volcanoes. Thermal features adjacent to these active volcanoes respond to magma injection events by degassing CO2 and by transient temperature changes. Geysers created by CO2-gaslift activity in silicic volcanism areas also flag magma and CO2 recharge and redistributions, for example at the Uzon-Geyserny, Kamchatka, Russia and Yellowstone, USA magma hydrothermal systems. Seismogenic faults in the Kamchatka fore-arc region are indicators of geofluid fracking; those faults can be traced down to 250 km depth, which is within the subduction slab below primary magma sources.
Liquid crystal (LC) director and refractive index distribution in a cylindrical object (eg, micropore) with different LC boundary conditions have been simulated. Splay and bend configurations were ...simulated in the LC pores with Franck elastic coefficients K33/K11 ratio from 0.5 to 3. For different LC orientation configurations, parabolic profiles of radial dependence of the refractive index are obtained with focus distance up to 80 mm that makes it possible for application in different LC devices.
LC director and refractive index distribution in a cylindrical object (eg, micropore) with different LC boundary conditions have been simulated. The LC microlenses proposed and simulated can be used in different display and nondisplay devices and systems: imaging systems, projection systems, solar cells, ophthalmic lenses, three‐dimensional displays, optical data storage devices, optical communication systems, etc.
Diffraction optical elements (DOE) are important elements of systems for images displaying and processing. The DOE materials with both positive and negative birefringence enhance performances and ...functionality of such systems. We have calculated diffraction of rays passing through (OAGSM) by using our original Exedeep software. At the first time the diffraction parameters for both transmitted and reflected TE‐ and TM‐waves are calculated for materials with both positive and negative optical anisotropy. The simulation results are to be used to create DOE for visible, IR and THz range.
An important case of an LC layer with non-fixed LC orientation on one cell's substrate at varying LC pretilt angle on another substrate is considered. It corresponds to the de Gennes coherence length ...dependence on boundary conditions. Structure and optical properties of such layers are described vs. the layer thickness, fixed pretilt angle value, light beam incidence angle. The LC elastic and dielectric properties as well as applied voltage are taken into account.
Liquid crystal (LC) director distribution and optical transmission for different types of heterophase systems with different LC boundary conditions is simulated. The first type is a transparent ...isotropic material with spherical or cylindrical liquid crystalline objects. There are polymer dispersed liquid crystal, LC fiber, lyotropic LC in polarizing films, LC in microgroove and nanogrooves and pores. The second type is an LC layer incorporating an isotropic transparent or non‐transparent object like microparticles and nanoparticles, spacers, protrusions in multi‐domain vertical alignment LC display et al. The system parameters' influence on LC display performances is discussed.
Liquid crystal (LC) director distribution and optical transmission for different types of heterophase systems with different LC boundary conditions is simulated. The first type is a transparent isotropic material with spherical or cylindrical objects. The second type is an LC layer incorporating an isotropic transparent or non‐transparent object. The system parameters' influence on LC display performances is discussed.
P‐153: Liquid Crystal Microlenses in Porous Media Belyaev, Victor V.; Solomatin, Alexey S.; Smirnov, Alexander G. ...
SID International Symposium Digest of technical papers,
20/May , Letnik:
48, Številka:
1
Journal Article
Recenzirano
LC director and refractive index distribution in a micropore
with different LC boundary conditions have been simulated.
Splay and bend configurations were simulated in the LC pores
with Franck ...elastic coefficients K33/K11 ratio from 0.5 to 3. For
different LC orientation configurations parabolic profiles of
radial dependence of the refractive index are obtained with
focus distance up to 80 mm that makes it possible for
application in different LC devices.
Temperature dependence of dielectric properties of nematic liquid crystals are investigated for two types of devices: wide temperature range liquid crystal (LC) displays and capacitor temperature ...sensor. Both real and imaginary components of the dielectric constant have been measured in wide frequency and temperature range including t < 0 °C as well as versus the angle θ between the directions of both magnetic and electric field in the measuring scheme. Some physical parameters of the nematic LC (NLC) dielectric relaxation have been determined. Effective values of the LC dielectric permittivity with different values of the LC pretilt angles in different parts of a complex LC cell have been simulated.
Temperature dependence of nematic liquid crystal dielectric properties is investigated for wide temperature range liquid crystal displays and capacitor temperature sensor. Both real and imaginary components of the dielectric constant have been measured versus frequency and temperature. Some physical parameters of the nematic liquid crystal dielectric relaxation have been determined. Effective values of the liquid crystal dielectric permittivity with different values of the liquid crystal pretilt angles have been simulated.
Phase retardation ΔΦ values for the LC cells with homogeneous and inhomogeneous LC director distribution vs the LC pretilt angle θ0 on the cell's substrates, namely for hybrid cells with different LC ...pretilt angles at every substrate and films with negative optical anisotropy materials.
Phase retardation of both extraordinary and ordinary polarized rays passing through a liquid crystal (LC) cell with homogeneous and inhomogeneous LC director distribution is calculated as a function ...of the LC pretilt angle θ₀ on the cell substrates in the range 0 ≤ θ₀ ≤ 90°. The LC pretilt on both substrates can have the same or opposite direction, thereby forming homogeneous, splay, or bend director configurations. At the same pretilt angle value, the largest phase retardation ΔΦ is observed in splay LC cells, whereas the smallest phase retardation is observed in bend cells. For the θ₀ values close to 0, 45°, and 90°, analytical approximations are derived, showing that phase retardation depends on LC birefringence variation.
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