论文标题
有关粘附的两个评论
Two comments on adhesion
论文作者
论文摘要
粘附悖论是指以下观察，即，对于大多数固体对象，当它们与分子接触状态分离时，无法检测到它们。粘附悖论是由于表面粗糙度而产生的，我们提出了实验和理论结果，这表明在大多数情况下，粘附在最长的波长粗糙度中“杀死”。进行了人手指和干净的玻璃板之间的粘附实验，对于干手指，没有发生宏观粘附。我们建议，观察到的接触区域下降，剪切力增加是由于非粘性指的玻璃接触力学导致的，涉及复杂分层材料的大变形。
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.
