title: Polymer Stabilization of Liquid-Crystal Blue Phase II toward Photonic Crystals.
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.
authors.affiliation: Department of Advanced Materials Engineering for Information and Electronics (BK21Plus), Kyung Hee University , Yongin-shi, Gyeonggi-do 446-701, Republic of Korea.
authors.forename: Seong-Yong
authors.initials: SY
authors.lastname: Jo
authors.affiliation: Department of Advanced Materials Engineering for Information and Electronics (BK21Plus), Kyung Hee University , Yongin-shi, Gyeonggi-do 446-701, Republic of Korea.
authors.forename: Sung-Wook
authors.initials: SW
authors.lastname: Jeon
authors.affiliation: Department of Advanced Materials Engineering for Information and Electronics (BK21Plus), Kyung Hee University , Yongin-shi, Gyeonggi-do 446-701, Republic of Korea.
authors.forename: Byeong-Cheon
authors.initials: BC
authors.lastname: Kim
authors.affiliation: Department of Advanced Materials Engineering for Information and Electronics (BK21Plus), Kyung Hee University , Yongin-shi, Gyeonggi-do 446-701, Republic of Korea.
authors.forename: Jae-Hyun
authors.initials: JH
authors.lastname: Bae
authors.affiliation: Physicochemical Soft Matter Research Unit, RIKEN Center for Emergent Matter Science (CEMS) , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Fumito
authors.initials: F
authors.lastname: Araoka
authors.affiliation: Department of Advanced Materials Engineering for Information and Electronics (BK21Plus), Kyung Hee University , Yongin-shi, Gyeonggi-do 446-701, Republic of Korea.
authors.forename: Suk-Won
authors.identifier: http://orcid.org/0000-0001-7160-7801
authors.initials: SW
authors.lastname: Choi
keywords: liquid crystals; photonic crystals; photonic devices; polymer-stabilizing; simple-cubic blue phase