Shape dependence of slip length on patterned hydrophobic surfaces
Shape dependence of slip length on patterned hydrophobic surfaces
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图案化疏水表面滑移长度的形状依赖性
DOI：
10.1063/1.3622640
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发表时间：
2011-08-08
影响因子：
4
通讯作者：
Chen, Min
中科院分区：
文献类型：
--
作者：
Gu, Xiaokun;Chen, Min
研究了固液界面形状对图案化疏水表面边界速度滑移的影响。在文献中的标度律扩展到证明这样的形状的作用，表明减少的有效滑移长度增加界面粗糙度。具有水平排列的碳纳米管阵列的图案化表面达到83 nm的有效滑移长度，通过利用碳纳米管的大的固有滑移，同时远离通过流动方向的界面曲率的负面影响。结果强调了在低摩擦图案化表面设计和制造中避免固液界面粗糙度的重要性。
The effects of solid-liquid interfacial shape on the boundary velocity slip of patterned hydrophobic surfaces are investigated. The scaling law in literature is extended to demonstrate the role of such shape, indicating a decrease of the effective slip length with increasing interfacial roughness. A patterned surface with horizontally aligned carbon nanotube arrays reaches an effective slip length of 83 nm, by utilizing large intrinsic slippage of carbon nanotube while keeping away from the negative effects of interfacial curvature through the flow direction. The results emphasize the importance of avoiding the solid-liquid interfacial roughness in low-friction patterned surface design and manufacture.