Collective dielectric processes at the transition temperature of the Sm-C* and Sm-A* phase in a ferroelectric liquid crystal
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Collective dielectric processes at the transition temperature of the Sm-C* and Sm-A* phase in a ferroelectric liquid crystal
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| Creator |
Gangwar, Lokesh K.
Bawa, Ambika Choudhary, Amit Singh, Surinder P. |
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| Subject |
Mathematical Physics
Physics of Fluids and Plasmas |
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| Description |
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 Sm-C*-Sm-A* phase in the ferroelectric liquid crystal (FLC) material. To avoid the surface effect, a thick cell of 40 mu m thickness was prepared with highly rubbed surfaces of the ITO substrates. It has been observed that the dielectric properties in Sm-C* and at the T-c temperature are dominated by the p-UHM process which is dependent on an applied oscillating field in the Sm-C* phase. The probing ac and dc bias field dependences of all these collective dielectric processes have been reported in the Sm-C* and Sm-A* phases of FLC materials.
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| Publisher |
American Physical Society
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| Date |
2018-06-27
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/3810/1/Collective%20dielectric%20processes.pdf
Gangwar, Lokesh K. and Bawa, Ambika and Choudhary, Amit and Singh, Surinder P. (2018) Collective dielectric processes at the transition temperature of the Sm-C* and Sm-A* phase in a ferroelectric liquid crystal. Physical Review E , 97 (6). 062707-062712. ISSN 2470-0045 |
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| Relation |
http://npl.csircentral.net/3810/
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