Torsional spring constant obtained for an atomic force microscope cantilever

Sangmin Jeon; Yehuda Braiman; Thomas Thundat

doi:10.1063/1.1667000

Torsional spring constant obtained for an atomic force microscope cantilever

Sangmin Jeon
, Yehuda Braiman
, Thomas Thundat

Department of Chemical and Biological Engineering

University at Buffalo

Oak Ridge National Laboratory

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

A method to measure the torsional spring constant of a microcantilever was described. The torsional resonance frequency of the cantilever was obtained by applying electrical current to the cantilever in a magnetic field. The induced Lorentz force twists the cantilever laterally without any normal load. It was found that the torsional spring constant is 11.24 N/m, which is 28 times greater than the deflection spring constant.

Original language	English
Pages (from-to)	1795-1797
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	10
DOIs	https://doi.org/10.1063/1.1667000
State	Published - Mar 8 2004

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abstract = "A method to measure the torsional spring constant of a microcantilever was described. The torsional resonance frequency of the cantilever was obtained by applying electrical current to the cantilever in a magnetic field. The induced Lorentz force twists the cantilever laterally without any normal load. It was found that the torsional spring constant is 11.24 N/m, which is 28 times greater than the deflection spring constant.",

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AU - Thundat, Thomas

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N2 - A method to measure the torsional spring constant of a microcantilever was described. The torsional resonance frequency of the cantilever was obtained by applying electrical current to the cantilever in a magnetic field. The induced Lorentz force twists the cantilever laterally without any normal load. It was found that the torsional spring constant is 11.24 N/m, which is 28 times greater than the deflection spring constant.

AB - A method to measure the torsional spring constant of a microcantilever was described. The torsional resonance frequency of the cantilever was obtained by applying electrical current to the cantilever in a magnetic field. The induced Lorentz force twists the cantilever laterally without any normal load. It was found that the torsional spring constant is 11.24 N/m, which is 28 times greater than the deflection spring constant.

UR - https://www.scopus.com/pages/publications/1842528868

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DO - 10.1063/1.1667000

M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Torsional spring constant obtained for an atomic force microscope cantilever

Abstract

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