Spectroscopy of the anharmonic cantilever oscillations in tapping-mode atomic-force microscopy
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- Martin Stark
- Max-Planck-Institut für Biochemie, Abt. Molekulare Strukturbiologie, D-82152 Martinsried, Germany
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- Robert W. Stark
- Universität München, Institut für Kristallographie und Angewandte Mineralogie, Theresienstr. 41, 80333 München, Germany
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- Wolfgang M. Heckl
- Universität München, Institut für Kristallographie und Angewandte Mineralogie, Theresienstr. 41, 80333 München, Germany
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- Reinhard Guckenberger
- Max-Planck-Institut für Biochemie, Abt. Molekulare Strukturbiologie, D-82152 Martinsried, Germany
説明
<jats:p>By spectroscopic analysis of the cantilever oscillation in tapping-mode atomic-force microscopy (TM–AFM), we demonstrate that the transition from an oscillatory state dominated by a net attractive force to the state dominated by repulsive interaction is accompanied by the enhanced generation of higher harmonics. The higher harmonics are a consequence of the nonlinear interaction and are amplified to significant amplitudes by the eigenmodes of the cantilever. The results show that in a quantitative description of TM–AFM higher eigenmode excitation must be considered to account for internal energy dissipation.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 77 (20), 3293-3295, 2000-11-13
AIP Publishing