Chinese Optics Letters, Vol. 18, Issue 8, 080006 (2020)
Polymerized cholesteric liquid crystal microdisks generated by centrifugal microfluidics towards tunable laser emissions [Invited]
Ya-Hao Ge1, Yi-Mei Lan1, Xing-Rui Li2, Yu-Wei Shan1, Yu-Jie Yang1, Sen-Sen Li1,*, Chaoyong Yang2,3, and Lu-Jian Chen1,**
- 1Department of Electronic Engineering, School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, China
- 2Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- 3Institute of Molecular Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
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 wet-etching 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.
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