Nothing Special   »   [go: up one dir, main page]

Gangwar et al., 2018 - Google Patents

Collective dielectric processes at the transition temperature of the Sm-C* and Sm-A* phase in a ferroelectric liquid crystal

Gangwar et al., 2018

View PDF
Document ID
15336616384877443924
Author
Gangwar L
Bawa A
Choudhary A
Singh S
Rajesh
Biradar A
Publication year
Publication venue
Physical Review E

External Links

Snippet

An anomalous dielectric relaxation process, called the partially unwound helical mode (p- UHM), is a collective dielectric process apart from the well known Goldstone and soft mode process; it is studied in the smectic C*(Sm-C*) phase and at the transition temperature of the …
Continue reading at npl.csircentral.net (PDF) (other versions)

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
    • C09K19/3441—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having nitrogen as hetero atom

Similar Documents

Publication Publication Date Title
Gangwar et al. Collective dielectric processes at the transition temperature of the Sm-C* and Sm-A* phase in a ferroelectric liquid crystal
Choudhary et al. Dielectric relaxation process of a partially unwound helical structure in ferroelectric liquid crystals
Ahuja et al. Polarization switching and dielectric relaxations in ferroelectric liquid crystals
Matkin et al. Resonant x-ray scattering at the Se edge in liquid crystal free-standing films and devices
Debnath et al. Dielectric properties of four room temperature ferroelectric and antiferroelectric multi-component liquid crystalline mixtures
Xiang et al. Electric-field-induced patterns and their temperature dependence in a bent-core liquid crystal
Zhang et al. Fréedericksz transition in an anticlinic liquid crystal
Eidenschink et al. Parameter characteristics of a ferroelectric liquid crystal with polarization sign reversal
Chandran et al. Probing the effect of temperature and electric field on the low frequency dielectric relaxation in a ferroelectric liquid crystal mesogen
Guo et al. Polar switching in the smectic-A d PA phase composed of asymmetric bent-core molecules
Kumari et al. Thermodynamic and dielectric spectroscopy of a racemic antiferroelectric liquid crystal
Wrobel et al. Dielectric, electro optic and X-ray studies of a room temperature ferroelectric mixture
Sako et al. Switching behavior of surface stabilized ferroelectric liquid crystals induced by pulse voltages
De la Fuente et al. Simultaneous determination of fundamental parameters for ferroelectric liquid crystals
Blinov et al. Temperature dependence and the" size effect" exhibited by the anchoring energy of a nematic with a planar orientation on a solid substrate
Volk et al. Scanning probe microscopy investigation of ferroelectric properties of barium strontium niobate crystals
Skarabot et al. The smectic A-smectic C* phase transition in submicron confined geometry
Mukherjee et al. High dielectric behavior and memory effect in a deformed helix ferroelectric liquid crystal with an antiferroelectric phase
O’Sullivan et al. Pyroelectric properties of ferroelectric liquid crystal cells with chevron, bookshelf, and helical structures
Blinov et al. Hysteresis inversion frequency for V-shape electrooptical switching controlled by dynamic impedance of ferroelectric SmC* phase
Kishio et al. Hysteresis of Optical Transmission in Ferroelectric Liquid Crystal by Winding and Unwinding Motions of Helical Structure
Uto et al. Dynamic response of electro‐optic effect in free‐standing ferroelectric liquid crystal film
Thakur et al. Dielectric relaxation near the transition temperature of Sm C*-Sm A phase in electroclinic liquid crystal
Raina et al. Helix dynamics and electro-optic switching in ferroelectric smectic C liquid crystals
Biradar et al. Goldstone mode behaviour in deformed helix ferroelectric liquid crystal materials