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NANOINDENTATION

Nanoindentation is one of the most important techniques to quantitatively characterize the mechanical properties of materials. Essentially, it works by pushing a hard, sharp indenter probe with a well-defined shape against the sample surface. This tensile testing technique can be used to accurately and locally characterize various materials (thin coatings, metals, ceramics, polymers, biological materials, etc.) at the nanometer level, and for heterogeneous surfaces (different phases, porous materials, depth perception, defects and complete surfaces, etc.) can also be tested. By analyzing the force-displacement curve, the hardness and elastic modulus of the sample can be extracted without measuring residual traces like traditional macro-hardness techniques.