The Geometry-Induced Superhydrophobic Property of Carpet-like Zinc Films

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2013,（10）
• 页码范围: 203-206
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/30/10/108104

摘要

Carpet-like zinc films with unique nanowires are fabricated by using a simple physical evaporation method.The definite morphologies of the films endow the superhydrophobic material with a contact angle of about 157.9°,and by additional modification of CF3 (CF2)7CH2 CH2Si(OCH3)3 the water adhesive force could be tuned from 58.3μN to 14.6μN.In order to analyze the controllable adhesion of superhydrophobic Zn films,we study the microstructure and chemical compositions of the films by x-ray diffraction SEM,TEM,HRTEM and EDAX.Furthermore,a model based on the balance of micro-surface energy is proposed to illustrate the relationship of the geometry and wettability properties of the films.The model provides new insights into how to designoriented microchannels and micro-protuberance on material surfaces,which is of benefit for controlling their ability of caught-collection in air bubbles and water-pinning collection.