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Dendritic growth in a two-dimensional smectic E freely suspended film

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Abstract

We have investigated the dendritic growth of a freely suspended film of a rod-type molecule forming the smectic E phase from the smectic A phase upon cooling from an isotropic temperature. In contrast to the fractal growing patterns of other smectic liquid phases, this exhibits a clear dendritic growth along with the direction of the molecular unit cell of the smectic E phase. During freezing from the outermost monolayers of the freely suspended film, the sequential dendritic growth occurs based on the confining effect of the preformed outer layers of the smectic E phase. An analysis of the growth law of the characteristic length, i.e., L(t) ∼ tn, shows that the growth process is consistent with the theoretically predicted (n = ∼0.66) value.

Graphical abstract: Dendritic growth in a two-dimensional smectic E freely suspended film

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Article information


Submitted
14 Jan 2020
Accepted
27 Feb 2020
First published
13 Mar 2020

Mol. Syst. Des. Eng., 2020, Advance Article
Article type
Paper

Dendritic growth in a two-dimensional smectic E freely suspended film

D. K. Yoon, C. Zhu, Y. H. Kim, Y. Shen, H. Jung and N. A. Clark, Mol. Syst. Des. Eng., 2020, Advance Article , DOI: 10.1039/D0ME00006J

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