Date: 04 Oct 2012

Friction and Internal Friction Measurements by Atomic Force Acoustic Microscopy

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Atomic force acoustic microscopy (AFAM) is a contact-resonance spectroscopy technique originally designed to determine elastic properties at the nanometer scale. While the load dependent shift of contact-resonance frequencies has been exploited to determine the elasticity of sample surfaces, less attention has been given to the damping of contact resonances. In this chapter, the authors show how the atomic force microscopy technique can be used to measure interfacial and internal friction by analyzing the Q-factor of contact-resonance curves.