Threshold field for switching the de Vries SA* phase in a low molar mass organosiloxane material

被引：3
|
作者：
Carboni, Carlo [1 ]
George, Abraham K. [1 ]
Al-Shizawi, Wafa [1 ]
Zoghaib, Michael W. [2 ]
Naciri, Jawad [3 ]
机构：
[1] Sultan Qaboos Univ, Coll Sci, Dept Phys, Al Khoud 123, Oman
[2] Sultan Qaboos Univ, Coll Sci, Dept Chem, Al Khoud 123, Oman
[3] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA
来源：
LIQUID CRYSTALS | 2010年 / 37卷 / 11期
关键词：
organosiloxane; de Vries phase; LIQUID-CRYSTALS; TRANSITION;
D O I：
10.1080/02678292.2010.519058
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The existence of a threshold field for the onset of switching in the organosiloxane material, ETSiKN65, has been investigated. This material displays a de Vries smectic A* type phase, and the presence of the threshold confers an anti-ferroelectric-like response. However, it has been found that the value of the threshold depends on the thickness of the specimen, in fact it vanishes altogether if the specimen is more than 20 m thick. It is concluded that the threshold is due to a complex anchoring mechanism at the interface with the cell walls.
引用
收藏
页码：1427 / 1431
页数：5
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