Polymerized cholesteric liquid crystal microdisks generated by centrifugal microfluidics towards tunable laser emissions [Invited]

• 作者: Chaoyong Yang Lu-Jian Chen Sen-Sen Li Xing-Rui Li Ya-Hao Ge Yi-Mei Lan Yu-Jie Yang Yu-Wei Shan
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2020,（8）
• 所属期刊栏目: Special Issue on Soft-matter Photonics
• 页码范围: 28-33
• 页数: 6页
• 语种: 英文
• DOI: 10.3788/COL202018.080006

摘要

The method for batch continuous production of polymerized cholesteric liquid crystal (PCLC) microdisks based on centrifugal microfluidics was proposed.The prototype centrifugal microfluidic chip was fabricated by the wetetching technique with a series of ladder-like concentric ring channels whose depths decrease radially.Two types of dye-doped PCLC microdisks with different doping procedures were generated by this method,the tunable lasing properties were characterized,and corresponding potential applications in a micro-cavity laser and optical barcode were demonstrated.The method is also applicable to a broad range of other polymerized materials.