7 October 2014 Photoinduced deformation of liquid crystal polymers
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Utilizing an optimized azobenzene precursor and polydimethylsiloxane-soft-template-based secondary replication, we achieved light-driven switching of superhydrophobic adhesion of water droplets on a micro-arrayed liquid crystal polymer film, which is cross-linked in nematic phase and guarantees a satisfying stability for practical application. Regulated by alternating irradiation of UV-Vis light (365 nm/530 nm), the micro-arrayed film showed an ideal quick (< 1 min) and reversible switch of superhydrophobic adhesion. This kind of non-contact real-time controllable switching of microdroplet’s adhesion might inspire and facilitate the designs and applications in novel microfluidic devices.
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Yuyun Liu, Yuyun Liu, Jiu-an Lv, Jiu-an Lv, Futao Cheng, Futao Cheng, Yanlei Yu, Yanlei Yu, "Photoinduced deformation of liquid crystal polymers", Proc. SPIE 9182, Liquid Crystals XVIII, 918214 (7 October 2014); doi: 10.1117/12.2061762; https://doi.org/10.1117/12.2061762

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