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Second-harmonic dielectric response of an antiferroelectric liquid crystal under dc electric fields

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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
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)

Submitter: 折原 宏

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