Transition from stick-slip to continuous sliding in atomic friction: Entering a new regime of ultralow friction

被引：466

作者：

Socoliuc, A ^{[1
]}

Bennewitz, R ^{[1
]}

Gnecco, E ^{[1
]}

Meyer, E ^{[1
]}

机构：

[1] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.92.134301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A transition from stick-slip to continuous sliding is observed for atomically modulated friction by means of a friction force microscope. When the stick-slip instabilities cease to exist, a new regime of ultralow friction is encountered. The transition is described in the framework of the Tomlinson model using a parameter eta which relates the strength of the lateral atomic surface potential and the stiffness of the contact under study. Experimentally, this parameter can be tuned by varying the normal load on the contact. We compare our results to a recently discussed concept called superlubricity.

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页码：134301 / 1

页数：4

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