Force detection using a fiber-optic cantilever

Raffi Budakian, Seth J. Putterman

Research output: Contribution to journalArticle

Abstract

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 6×10-13m/ Hz 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.

Original languageEnglish (US)
Pages (from-to)2100-2102
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number11
DOIs
StatePublished - Sep 9 2002

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fiber optics
stiffness
elongation
diodes
interactions
gold
conductivity
electrical resistivity
fibers
probes
sensitivity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Force detection using a fiber-optic cantilever. / Budakian, Raffi; Putterman, Seth J.

In: Applied Physics Letters, Vol. 81, No. 11, 09.09.2002, p. 2100-2102.

Research output: Contribution to journalArticle

Budakian, R & Putterman, SJ 2002, 'Force detection using a fiber-optic cantilever', Applied Physics Letters, vol. 81, no. 11, pp. 2100-2102. https://doi.org/10.1063/1.1503874
Budakian, Raffi ; Putterman, Seth J. / Force detection using a fiber-optic cantilever. In: Applied Physics Letters. 2002 ; Vol. 81, No. 11. pp. 2100-2102.
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