Homogeneous self-aligned liquid crystals on wrinkled-wall poly(dimethylsiloxane) via localised ion-beam irradiation

Scientific Reports
Hae-Chang JeongDae-Shik Seo

Abstract

We demonstrate self-aligned liquid crystals (LCs) using a wrinkled-wall polydimethylsiloxane (PDMS) wrinkle structure, which is a key factor to obtain a stable homogeneous alignment state with positive LCs. We constructed the wrinkled walls via localised surface exposure to IB radiation, which passed through a long length localised pattern mask. The creation of the wrinkled wall helped to align the LC molecules homogeneously because the wrinkled wall acted as a guide for the arrangement of positive LC molecules. In addition, we confirmed the stability of the alignment state as the width of the wrinkled wall was changed. Although this wrinkled-wall method is a non-contact method, LC alignment is achieved via an anisotropic topographical guide, which provides the LC molecules with stable homogeneous alignment.

References

Sep 19, 2003·Nature·Peidong Yang
Jan 18, 2007·Proceedings of the National Academy of Sciences of the United States of America·Myoung-Woon MoonJohn W Hutchinson
Dec 30, 2009·Electrophoresis·Jinwen ZhouNicolas Hans Voelcker
Jul 28, 2011·Advanced Materials·Jijo J VallooranRaffaele Mezzenga

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Citations

Oct 3, 2015·ACS Applied Materials & Interfaces·Hae-Chang JeongDae-Shik Seo
Jun 21, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Hae-Chang JeongDae-Shik Seo

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Methods Mentioned

BETA
atomic force microscopy
AFM
irradiate
irradiating
X-ray

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