Microstructure-Stabilized Blue Phase Liquid Crystals

Jia-De Lin, Daniel Ho, Lifeng Chen, Martin Lopez Garcia, Shun-An Jiang, Mike Taverne, Chia-Rong Lee, John Rarity

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)
259 Downloads (Pure)

Abstract

We show that micron-scale two-dimensional (2D) honeycomb microwells can significantly improve the stability of blue phase liquid crystals (BPLCs). Polymeric microwells made by direct laser writing improve various features of the blue phase (BP) including a dramatic extension of stable temperature range and a large increase both in reflectivity and thermal stability of the reflective peak wavelength. These results are mainly attributed to the omni-directional anchoring of the isotropically oriented BP molecules at the polymer walls of the hexagonal microwells and at the top and bottom substrates. This leads to an omni-directional stabilization of the entire BPLC system. This study not only provides a novel insight into the mechanism for the BP formation in the 2D microwell but also points to an improved route to stabilize BP using 2D microwell arrays.
Original languageEnglish
Pages (from-to)15435-15441
Number of pages7
JournalACS Omega
Volume3
Issue number11
DOIs
Publication statusPublished - 13 Nov 2018

Keywords

  • blue phase liquid crystals
  • chiral materials
  • direct laser writing
  • photonic bandgaps

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