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Surface chemical analysis - Scanning probe microscopy - Procedure for the determination of elastic moduli for compliant materials using atomic force microscope and the two-point JKR method
This document describes a procedure for the determination of elastic modulus for compliant materials using atomic force microscope (AFM).
Force-distance curves on the surface of compliant materials are measured and the analysis uses a two-point method based on Johnson-Kendall-Roberts (JKR) theory.
This document is applicable to compliant materials with elastic moduli ranging from 100 kPa to 1 GPa.
The spatial resolution is dependent on the contact radius between the AFM probe and the surface and is typically approximately 10-20 nm.
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