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Second-harmonic dielectric response of an antiferroelectric liquid crystal under dc electric fields
Title: | Second-harmonic dielectric response of an antiferroelectric liquid crystal under dc electric fields |
Authors: | Fajar, Andika Browse this author | Orihara, Hiroshi Browse this author →KAKEN DB |
Issue Date: | Mar-2010 |
Publisher: | American Physical Society |
Journal Title: | Physical Review E |
Volume: | 81 |
Issue: | 3 |
Start Page: | 031710 |
Publisher DOI: | 10.1103/PhysRevE.81.031710 |
Abstract: | Second-harmonic dielectric response under dc fields in an antiferroelectric liquid-crystal 4-(1-methyl-heptyloxycarbonyl)phenyl 4-octylcarbonyloxybiphenyl- 4-carboxylate (MHPOCBC) has been investigated. The second-harmonic response from the amplitude mode in the smectic-Cα phase was observed due to the symmetry breaking by the application of dc electric fields. A Landau theory was developed in order to analyze experimentally obtained frequency dispersions. From the analysis we found a softening of the amplitude mode with increasing the dc field at a temperature close to the smectic-Cα-smectic-A phase transition point. It was turned out that the relaxation frequency of the amplitude mode decreases linearly with the applied electric field. |
Rights: | ©2010 The American Physical Society |
Type: | article |
URI: | http://hdl.handle.net/2115/43005 |
Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 折原 宏
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