Skip to Main content Skip to Navigation
Journal articles

Direct measurement of spatial modes of a micro-cantilever from thermal noise

Abstract : Measurements of the deflection induced by thermal noise have been performed on a rectangular atomic force microscope cantilever in air. The detection method, based on polarization interferometry, can achieve a resolution of 1E-14 m/rtHz in the frequency range 1 kHz – 800 kHz. The focused beam from the interferometer probes the cantilever at different positions along its length and the spatial modes' shapes are determined up to the fourth resonance, without external excitation. Results are in good agreement with theoretically expected behavior. From this analysis accurate determination of the elastic constant of the cantilever is also achieved.
Complete list of metadata

Cited literature [21 references]  Display  Hide  Download
Contributor : Ludovic Bellon Connect in order to contact the contributor
Submitted on : Monday, November 16, 2009 - 1:51:56 PM
Last modification on : Tuesday, December 8, 2020 - 10:23:33 AM
Long-term archiving on: : Friday, September 24, 2010 - 10:56:56 AM


Files produced by the author(s)




Pierdomenico Paolino, Bruno Tiribilli, Ludovic Bellon. Direct measurement of spatial modes of a micro-cantilever from thermal noise. Journal of Applied Physics, American Institute of Physics, 2009, pp.094313. ⟨10.1063/1.3245394⟩. ⟨ensl-00379365v4⟩



Record views


Files downloads