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arXiv 2007.03515cond-mat.soft
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关于粘附力的两点评论

Two comments on adhesion

A. Tiwari, J. Wang, B. N. J. Persson

摘要:

粘附悖论是指观察到,对于大多数固体物体,当它们脱离分子接触状态时,没有粘附力可以检测到。粘附悖论的结果从表面粗糙度,我们目前的实验和理论结果表明,粘附在大多数情况下是“杀死”的最长波长的粗糙度。进行了人手指和清洁玻璃板之间的粘附实验,并且对于干燥手指,没有发生宏观粘附。我们认为,所观察到的接触面积随着剪切力的增加而减少,这是由于非粘性手指玻璃接触力学,涉及复杂的层状材料的大变形。

英文摘要:

The adhesion paradox refers to the observation that for most solid objects no adhesion can be detected when they are separated from a state of molecular contact. The adhesion paradox results from surface roughness, and we present experimental and theoretical results which shows that adhesion in most cases is "killed" by the longest wavelength roughness. Adhesion experiments between a human finger and a clean glass plate were carried out, and for a dry finger, no macroscopic adhesion occurred. We suggest that the observed decrease in the contact area with increasing shear force results from non-adhesive finger-glass contact mechanics, involving large deformations of a complex layered material.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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