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The mechanical response of a multiwalled carbon nanospring was examined with an atomic force microscope. Cantilever deflection, oscillation amplitude, and resonance were simultaneously monitored during the cycled movement of the scanner. A nonlinear response of the nanospring was observed, consistent with compression and buckling of the nanospring. This is the first reported measurement of a shift in the cantilever resonance frequency as a result of the interaction of a nanospring-tipped cantilever with the substrate.
Poggi et al. (2004) studied this question.