Rabinovich YI, Adler JJ, Ata A, Singh RK, Moudgil BM
Department of Materials Science and Engineering and Engineering Research Center for Particle Science and Technology, University of Florida, Gainesville, Florida, 32611
J Colloid Interface Sci. 2000 Dec 1;232(1):10-16. doi: 10.1006/jcis.2000.7167.
Nanoscale surface roughness strongly affects the adhesion force between surfaces. In this investigation, a model that more accurately describes the size of an asperity based on the measurable parameters of root-mean-square (rms) roughness and the distance between the asperities is derived. The radius of the asperity from the proposed model is much larger than the radius used in previous approaches, considering the same surface with nanoscale roughness. Using the proposed geometry and previously suggested models, this paper elucidates the contributions from contact and noncontact interactions of a particle adhered to a surface with nanoscale roughness (approximately less than 20 nm rms). For most surfaces considered, the contact interaction of the asperity and the adhering particle are found to dominate the interaction. In the second paper of this series, the proposed model is compared to the experimentally determined force of adhesion in systems with nanoscale roughness. Copyright 2000 Academic Press.
纳米级表面粗糙度对表面间的粘附力有强烈影响。在本研究中，基于均方根（rms）粗糙度和微凸体间距等可测量参数，推导了一个能更准确描述微凸体尺寸的模型。对于具有纳米级粗糙度的同一表面，从所提模型得出的微凸体半径比先前方法中使用的半径大得多。利用所提几何模型和先前提出的模型，本文阐明了附着在具有纳米级粗糙度（均方根约小于20nm）表面上的粒子的接触和非接触相互作用的贡献。对于所考虑的大多数表面，发现微凸体与附着粒子的接触相互作用主导着这种相互作用。在本系列的第二篇论文中，将所提模型与具有纳米级粗糙度系统中实验测定的粘附力进行了比较。版权所有2000，学术出版社。
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