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直接测量与独立近晶A相薄膜相邻的弯月面的渗透率。

Direct measurement of the permeability of the meniscus bordering a free-standing smectic-A film.

作者信息

Caillier F, Oswald P

机构信息

Laboratoire de Physique de l'Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon CEDEX 07, France.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Sep;70(3 Pt 1):031704. doi: 10.1103/PhysRevE.70.031704. Epub 2004 Sep 22.

DOI:10.1103/PhysRevE.70.031704
PMID:15524540
Abstract

A smectic-A free-standing film is always connected by a meniscus to the frame on which it has been stretched. The meniscus acts as a dissipative reservoir and is characterized by its permeability. We propose a method to measure directly this quantity by equilibrating two menisci in correspondence with the same free-standing film. The permeability is shown to depend on the film thickness, in full agreement with previous indirect measurements obtained by analyzing the growth dynamics of dislocation loops. An improved model of the meniscus is proposed to interpret all the data.

摘要

近晶-A 自支撑膜总是通过弯月面与拉伸它的框架相连。弯月面起到耗散库的作用，其特征在于其渗透率。我们提出了一种方法，通过使与同一自支撑膜对应的两个弯月面达到平衡来直接测量这个量。结果表明，渗透率取决于膜的厚度，这与之前通过分析位错环生长动力学获得的间接测量结果完全一致。为了解释所有数据，我们提出了一种改进的弯月面模型。

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