Fabrication of disordered porous structures by solvent-assisted reorganisation of liquid crystal materials

Ahram Suh, Dae Seok Kim, Hanim Kim, Hyungju Ahn, Tae Joo Shin, Dong Ki Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

Shaping of self-assembled soft materials is of interest for material science and nanotechnology applications because it can provide a flexible and easy method to obtain a single domain in a large area, which is used in opto-electronic and patterning applications. Here, we fabricated disordered porous structures of liquid crystals (LCs) by using a solvent-assisted treatment. Initially, the LC-based layered structures had either toric focal conic domains (TFCDs) or planar aligned samples. After treatment, disordered porous structures with randomly oriented layers were obtained although both initial and final states exhibited short-range ordering of the LC molecules. This behaviour was precisely analysed by polarised optical microscopy (POM), field-emission scanning electron microscopy (FESEM) and grazing incidence X-ray diffraction (GIXD) methods. Our resultant platform showed that disordered porous structures formed by LC materials can be used for tuneable and reversible multiple scattering applications.

Original languageEnglish (US)
Pages (from-to)1198-1207
Number of pages10
JournalLiquid Crystals
Volume43
Issue number9
DOIs
StatePublished - Jul 14 2016

Bibliographical note

Funding Information:
This work was supported by a grant from the National Research Foundation (NRF), funded by the Korean Government [2014M3C1A3052567 and 2015R1A1A1A05000986].

Publisher Copyright:
© 2016 Informa UK Limited, trading as Taylor & Francis Group.

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

Keywords

  • Liquid crystals
  • disordered porous structure
  • multiple scattering
  • solvent-assisted reorganisation

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