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首页> 外文期刊>Journal of Applied Polymer Science >Replication of laser-textured alumina surfaces by polydimethylsiloxane: Improvement of surface hydrophobicity
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Replication of laser-textured alumina surfaces by polydimethylsiloxane: Improvement of surface hydrophobicity

机译：聚二甲基硅氧烷复制激光织构的氧化铝表面：改善表面疏水性

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摘要

Alumina tiles are textured by a laser beam to obtain improved hydrophobic characteristics at the surfaces. Since the textured surfaces are optically opaque, the resulting surfaces are copied and replicated by polydimethylsiloxane (PDMS). Some of the texture features such as whiskers-like structures with complex shapes could not be copied by PDMS and synthesized silica particles are deposited onto PDMS copied and replicated surfaces to create a lotus effect. Analytical tools are incorporated to characterize the PDMS copied and replicated surfaces as well as synthesized silica particles deposited surfaces. Dynamic water contact angle measurements are carried out to assess hydrophobic characteristics of the resulting surfaces. It is found that PDMS copied and replicated surfaces have almost identical surface texture morphology to that of laser treated surface. Introducing synthesized silica particles improved the lotus effect on the PDMS copied and replicated surfaces; in which case, the hysteresis of droplet contact angle remains significantly low. (C) 2016 Wiley Periodicals, Inc.
机译：氧化铝砖被激光束织构化，以在表面上获得改善的疏水性。由于纹理化表面是光学不透明的，因此生成的表面可以通过聚二甲基硅氧烷（PDMS）复制和复制。 PDMS无法复制某些纹理特征（例如具有复杂形状的须状结构），并且将合成的二氧化硅颗粒沉积到PDMS复制和复制的表面上，从而产生荷花效果。结合了分析工具来表征PDMS复制和复制的表面以及合成的二氧化硅颗粒沉积表面。进行动态水接触角测量以评估所得表面的疏水特性。发现PDMS复制和复制的表面具有与激光处理的表面几乎相同的表面纹理形态。引入合成的二氧化硅颗粒可改善在PDMS复制和复制表面上的荷叶效应;在这种情况下，液滴接触角的磁滞保持很低。 （C）2016威利期刊公司

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