Abstract
With an optical interferometer, the free vibration spectra and the local vibration amplitude of four rectangular atomic force microscope cantilevers made of silicon have been examined experimentally in a spectral range of 100 kHz to 10 MHz. A good agreement with the flexural wave theory of elastic beams was found. Coupling to torsional vibrations was also observed. When the sensor tip of the cantilever is in contact with a sample surface the resonances are shifted in frequency and the vibration amplitudes along the cantilever change. A method is presented to calculate this frequency shift using a linear approximation for the tip–sample interaction forces, and the results are compared with the frequency shift calculated from the point-mass model. The measured resonance frequencies of a surface-coupled cantilever do not correspond as well to the theoretical ones as in the free case even if the elastic-beam model is used. The reason for the disagreement is found to be the geometry of the commercial cantilevers and the nonlinearity of the tip-sample interaction force.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 8:03 a.m.) |
Deposited | 2 years, 1 month ago (July 7, 2023, 9:45 p.m.) |
Indexed | 1 week, 4 days ago (Aug. 12, 2025, 5:53 p.m.) |
Issued | 28 years, 11 months ago (Sept. 1, 1996) |
Published | 28 years, 11 months ago (Sept. 1, 1996) |
Published Print | 28 years, 11 months ago (Sept. 1, 1996) |
@article{Rabe_1996, title={Vibrations of free and surface-coupled atomic force microscope cantilevers: Theory and experiment}, volume={67}, ISSN={1089-7623}, url={http://dx.doi.org/10.1063/1.1147409}, DOI={10.1063/1.1147409}, number={9}, journal={Review of Scientific Instruments}, publisher={AIP Publishing}, author={Rabe, U. and Janser, K. and Arnold, W.}, year={1996}, month=sep, pages={3281–3293} }