Pieranski Pawel, Godinho Maria Helena
Laboratoire de Physique des Solides, Université Paris-Sud, Bât. 510, 91405, Orsay, France.
CENIMAT, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829 - 516, Caparica, Portugal.
Eur Phys J E Soft Matter. 2019 Jun 3;42(6):69. doi: 10.1140/epje/i2019-11832-9.
Due to its low symmetry, the long-lived pseudo-planar texture, dubbed "the dowser texture", has a flexo-electric spontaneous polarisation [Formula: see text]. Being degenerated, the dowser texture is easily aligned by the electric torque [Formula: see text] acting on [Formula: see text]. The dowser texture can also be aligned by Poiseuille flows driven by electro-osmosis. The hydrodynamic torques due to the electro-osmotic flows are linear in [Formula: see text] like the electrical one. It is shown that in 5CB the electro-osmotic flows can alter measurements of the flexo-electric polarisation.
由于其低对称性，这种被称为“探寻者纹理”的长寿命准平面纹理具有挠曲电自发极化[公式：见正文]。由于退化，探寻者纹理很容易被作用于[公式：见正文]的电转矩[公式：见正文]对齐。探寻者纹理也可以通过电渗驱动的泊肃叶流来对齐。电渗流产生的流体动力转矩与电转矩一样，在[公式：见正文]中是线性的。结果表明，在5CB中，电渗流会改变挠曲电极化的测量结果。
