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  • Title: Polymer Stabilization of Liquid-Crystal Blue Phase II toward Photonic Crystals.
    Author: Jo SY, Jeon SW, Kim BC, Bae JH, Araoka F, Choi SW.
    Journal: ACS Appl Mater Interfaces; 2017 Mar 15; 9(10):8941-8947. PubMed ID: 28215076.
    Abstract:
    The temperature ranges where a pure simple-cubic blue phase (BPII) emerges are quite narrow compared to the body-centered-cubic BP (BPI) such that the polymer stabilization of BPII is much more difficult. Hence, a polymer-stabilized BPII possessing a wide temperature range has been scarcely reported. Here, we fabricate a polymer-stabilized BPII over a temperature range of 50 °C including room temperature. The fabricated polymer-stabilized BPII is confirmed via polarized optical microscopy, Bragg reflection, and Kossel diagram observations. Furthermore, we demonstrate reflective BP liquid-crystal devices utilizing the reflectance-voltage performance as a potential application of the polymer-stabilized BPII. Our work demonstrates the possibility of practical application of the polymer-stabilized BPII to photonic crystals.
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