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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26439


    Title: Superhydrophobic floatability of a hydrophilic object driven by edge effect
    Authors: Chang,FM;Sheng,YJ;Tsao,HK
    Contributors: 化學工程與材料工程學系
    Keywords: SURFACES;RESISTANCE;WATER
    Date: 2009
    Issue Date: 2010-06-29 17:28:05 (UTC+8)
    Publisher: 中央大學
    Abstract: It is generally believed that a water-repellent surface is necessary for small insects to stand on water. Through a combined experimental and theoretical study, we demonstrate that an object with hydrophilic surface can float with apparent contact angle greater than 90 degrees due to edge effect. The apparent contact angle rises with increasing loading even to a value typically displayed only by superhydrophobic surfaces. On the basis of free energy minimization, two regimes are identified. When buoyancy controls, the meniscus meets the object with the intrinsic contact angle. As surface tension dominates, however, contact angle is regulated by total force balance.
    Relation: APPLIED PHYSICS LETTERS
    Appears in Collections:[化學工程與材料工程研究所] 期刊論文

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