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Sub-hertz relaxation process in chiral smectic mixtures doped with silver nanoparticles

Mandal, P. K. and Lapanik, A. and Wipf, R. and Stühn, B. and Haase, W. (2012):
Sub-hertz relaxation process in chiral smectic mixtures doped with silver nanoparticles.
In: Appl. Phys. Lett., American Institute of Physics, pp. 073112, 100, [Online-Edition: http://dx.doi.org/10.1063/1.3685700],
[Article]

Abstract

A thermal activated sub-hertz frequency dielectric absorption process in both SmC* and SmA* phases along with characteristic Goldstone mode have been observed in both pure and silver nano particle doped liquid crystal mixtures. This process is well resolved, in particular, in the composites probably due to capturing of ions/charges inside the thiol group layer around the silver particles surface, thereby increasing the resistivity of the composites. The process is interpreted as space charge accumulation of ions/charges at the interface between liquid crystals and the cell polymer layer close to the electrodes. Improved switching characteristics and reduced spontaneous polarization have been detected.

Item Type: Article
Erschienen: 2012
Creators: Mandal, P. K. and Lapanik, A. and Wipf, R. and Stühn, B. and Haase, W.
Title: Sub-hertz relaxation process in chiral smectic mixtures doped with silver nanoparticles
Language: English
Abstract:

A thermal activated sub-hertz frequency dielectric absorption process in both SmC* and SmA* phases along with characteristic Goldstone mode have been observed in both pure and silver nano particle doped liquid crystal mixtures. This process is well resolved, in particular, in the composites probably due to capturing of ions/charges inside the thiol group layer around the silver particles surface, thereby increasing the resistivity of the composites. The process is interpreted as space charge accumulation of ions/charges at the interface between liquid crystals and the cell polymer layer close to the electrodes. Improved switching characteristics and reduced spontaneous polarization have been detected.

Journal or Publication Title: Appl. Phys. Lett.
Volume: 100
Publisher: American Institute of Physics
Divisions: 05 Department of Physics > Institute for condensed matter physics > Experimental Condensed Matter Physics
07 Department of Chemistry
05 Department of Physics > Institute for condensed matter physics
05 Department of Physics
Date Deposited: 20 Feb 2012 07:57
Official URL: http://dx.doi.org/10.1063/1.3685700
Identification Number: doi:10.1063/1.3685700
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