Prolonged water freezing on a superhydrophobic micropillar polydimethylsiloxane film
Prolonged water freezing on a superhydrophobic micropillar polydimethylsiloxane film
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DOI：
10.1016/j.rinma.2022.100274
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发表时间：
2022-04
影响因子：
--
通讯作者：
Y. Kameya;Y. Takada
中科院分区：
文献类型：
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作者：
Y. Kameya;Y. Takada
表面设计是避免积冰问题的一种很有前途的方法。本文研究了水在具有微柱阵列结构的聚二甲基硅氧烷（PDMS）薄膜上的冻结特性。采用PDMS-PDMS图形转移技术，制作了柱直径为10 μm、高度为20 μm、间距为50 μm的微柱正方形阵列。水接触角和滑离角的测量表明，微柱PDMS膜具有超疏水表面。比较了水滴在不同表面（包括带有微柱PDMS膜的铜板）上的冻结行为。微柱PDMS膜的情况下，表现出延长冻结，和防冰表面设计的潜力被证明。
Surface design is a promising approach to avoid problems with ice accretion. Here we investigated the water freezing characteristics on a polydimethylsiloxane (PDMS) film with micropillar-array structure. We fabricated a micropillar square array with the pillar diameter of 10 μm, the heigh of 20 μm, and the pitch of 50 μm, using the PDMS–PDMS pattern transfer. Water contact angle and sliding-off angle measurements revealed that the micropillar PDMS film had a superhydrophobic surface. Freezing behaviors were compared for water droplet on different surfaces including a copper plate with a micropillar PDMS film. The case of micropillar PDMS film showed prolonged freezing, and the potential of anti-icing surface design was demonstrated.