CuO超疏水表面的制备及分形评价
首发时间:2012-04-09
摘要:采用表面氧化法在紫铜上制备出氧化铜表面,经低表面能物质修饰后,氧化时间大于30分钟的表面呈现超疏水性。SEM表征发现紫铜的氧化过程可以分为三个阶段。编制MATLAB程序,采用分形理论对氧化表面进行评价,发现该表面具有明显的分形特征。最后结合表面接触角变化趋势,指出表面分层结构是实现其超疏水的决定因素,分形维数的增大能够有效得提高其超疏水性能。
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Preparation of Superhydrophobic CuO Surfaces and Estimation by Fractal Theory
Abstract:CuO surfaces were prepared by surface oxidation on copper, and superhydrophobicity was shown on the surfaces which were oxidized over 30 minutes and modified by material with low surface energy. Copper oxidation process can be divided into three stages by SEM characterization. Fractal theory was used to estimate the surfaces with the MATLAB program, and the results show that the surfaces have obvious fractal characteristics. Finally, combining the contact angle and fractal dimension trend, it is found that the surface hierarchy determines the superhydrophobicity and sub-fractal dimension increases to improve their superhydrophobicity.
Keywords: materials science fractal theory superhydrophobicity box dimension contact angle
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