Force detection using a fiber-optic cantilever

被引：13

作者：

Budakian, R ^{[1
]}

Putterman, SJ ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 11期

关键词：

D O I：

10.1063/1.1503874

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A force measurement technique has been developed that utilizes a clamped fiber-optic element both as a cantilever and as a highly sensitive probe of the static and dynamic displacement of a sample that is mounted near its free end. Light from a 1.5 mW superluminescent diode coupled into the fiber is used to detect displacement with 6x10(-13) m/rootHz sensitivity for frequencies above 40 kHz. This technique has been used to study the interaction between two gold surfaces by simultaneously measuring the interaction force and contact stiffness as a function of the conductance and elongation of the contact. Excellent correspondence between steps in contact stiffness and electrical conductivity was observed. (C) 2002 American Institute of Physics.

引用

页码：2100 / 2102

页数：3

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