Maximum strength for intermolecular adhesion of nanospheres at an optimal size

被引：10

作者：

Yao, Haimin ^{[1
]}

Guduru, Pradeep ^{[1
]}

Gao, Huajian ^{[1
]}

机构：

[1] Brown Univ, Div Engn, Providence, RI 02912 USA

来源：

JOURNAL OF THE ROYAL SOCIETY INTERFACE | 2008年 / 5卷 / 28期

关键词：

contact mechanics; intermolecular adhesion; size dependence; adhesion strength; nanoscale;

D O I：

10.1098/rsif.2008.0066

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Previous studies have emphasized that the adhesion strength between solid objects tends to increase as the characteristic size of the objects decreases and eventually saturates at the theoretical adhesion strength below a critical size scale. Here we show that the adhesion strength between two spheres or between a sphere and a solid half-space actually exhibits a peak value at an optimal size. This optimal size arises owing to a transition between surface- and bulk-dominated interaction regimes at the nanoscale.

引用

页码：1363 / 1370

页数：8

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