Molecular relaxation in homeotropically aligned ferroelectric liquid crystals

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• 作者：G. Singh ; G. Vijaya Prakash ; S. Kaur ; A. Choudhary ; A.M. Biradar
• 关键词：Liquid crystal ; Dielectric permittivity ; Dielectric loss and relaxation ; Alignment
• 刊名：Physica B
• 出版年：2008
• 出版时间：1 September 2008
• 年：2008
• 卷：403
• 期：18
• 页码：3316-3319
• 全文大小：266 K

文摘

Uniform and defect-free homeotropic (HMT) alignment of ferroelectric liquid crystals (FLC) cells have been successfully achieved by a non-contact technique, namely, magnetic field-assisted alignment; otherwise such alignment is difficult by conventional methods. Frequency–temperature dependent dielectric studies, confirm the presence of stable molecular relaxation around the short axis of FLC molecule, throughout SmC*–SmA* phases with minimum low-frequency fluctuations, known as Goldstone modes. The proposed non-contact alignment method, combined with FLC-based HMT configuration, would be much promising for integrated-optoelectronic devices, such as micro-mirror displays.