Identification of nanoscale dissipation processes by dynamic atomic force microscopy

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Abstract

Identification of energy-dissipation processes at the nanoscale is demonstrated by using amplitude-modulation atomic force microscopy. The variation of the energy dissipated on a surface by a vibrating tip as a function of its oscillation amplitude has a shape that singles out the dissipative process occurring at the surface. The method is illustrated by calculating the energy-dissipation curves for surface energy hysteresis, long-range interfacial interactions and viscoelasticity. The method remains valid with independency of the amount of dissipated energy per cycle, from 0.1 to 50 eV. The agreement obtained between theory and experiments performed on silicon and polystyrene validates the method. © 2006 The American Physical Society.

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Garcia, R., Gómez, C. J., Martinez, N. F., Patil, S., Dietz, C., & Magerle, R. (2006). Identification of nanoscale dissipation processes by dynamic atomic force microscopy. Physical Review Letters, 97(1). https://doi.org/10.1103/PhysRevLett.97.016103

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