Behavior of a Deionized Liquid Crystal Subjected to Unipolar Injection in Nematic and Isotropic Phase
作者:
Jean‐Claude Lacroix,
Robert Tobaze´on,
期刊:
Applied Physics Letters
(AIP Available online 1972)
卷期:
Volume 20,
issue 7
页码: 251-253
ISSN:0003-6951
年代: 1972
DOI:10.1063/1.1654134
出版商: AIP
数据来源: AIP
摘要:
Electrohydrodynamic phenomena in insulating MBBA subjected to unipolar injection of ionic carriers are described. Near the transition temperature, the transient currents following a voltage step were similar in the nematic and isotropic phases, over a wide range of voltages and electrode separations. High‐speed cinematography, Schlieren techniques, and the Kerr effect were resorted to in this investigation. Liquid motion was observed having a time lag and exhibited patterns closely similar to those previously observed in isotropic polar liquids. The velocities of hydrodynamic disturbances and of space‐charge fronts varied over a broad range, depending on experimental conditions.
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