Wicking Study of Nanostructured Titania Surfaces for Flat Heat Pipes
Wicking Study of Nanostructured Titania Surfaces for Flat Heat Pipes
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发表时间：
2009-05
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通讯作者：
P. Bogorzi;C. Ding;N. MacDonald;C. Meinhart;M. Sigurdson;G. Soni
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作者：
P. Bogorzi;C. Ding;N. MacDonald;C. Meinhart;M. Sigurdson;G. Soni
我们报告了一种基于纳米结构 TiO2 (NST) 的芯吸材料，用于扁平热管的应用。热管采用芯吸材料来实现一些热虹吸管无法实现的独特功能[1]，并且在航天器和电子等广泛领域中作为冷却系统得到了应用。人们已经研究了不同种类的材料，如碳纳米管[2]、纳米线[3]、烧结铜[4]和微加工通道[5, 6]，用于微型热管的芯吸功能。基于钛微加工和表面改性技术，我们制造了一系列带有纳米/微米纹理表面的柱子。我们的研究表明，水可以完全润湿该纳米/微米纹理表面，并且该表面的润湿行为遵循著名的沃什伯恩方程。
We report a wicking material based on nanostructured TiO2 (NST) for the application of flat heat pipes. Heat pipes adopt wicking materials to achieve some unique functions that thermal siphons could not achieve[1], and they have found their applications as cooling systems in a wide variety of areas such as spacecraft and electronics. Different kinds of materials such as carbon nanotubes[2], nanowires[3], sintered copper[4], and micromachined channels[5, 6] have been investigated for micro heat pipes for their wicking functions. Based on titanium micromachining and surface modification techniques, we fabricated an array of pillars which carry nano/micro textured surface Our study shows that water can completely wet this nano/micro textured surface, and it’s wetting behavior on this surface follows the famous Washburn equation.