Transparent diamond probe for nanoindentation
Теги: defects heterogeneous samples impurities indenter nanoindentation дефекты индентор наноидентирование неоднородные образцы примеси
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The advantages of the nanoindentation, such as the speed of testing, the simplicity of sample preparation, the non-destructive principle of control, make it effective for studying a wide class of materials. Heterogeneous samples often require observation of their mechanical properties in local areas of the surface. In this regard, there is a need for precise positioning of the indenter using a transparent tip. An indenter made of transparent material, in addition to direct observation of the measurement area, allows radiation exposure of selected area of the sample. If there are no impurities and defects in the crystal from which the indenter is made, the radiation beam does not lose its intensity. The paper demonstrates the possibilities of observing the surface of a sample through an indenter, using liquid-crystal screens of electronic devices as an example. The image of individual pixels that passed through the indenter is resolved with great accuracy, and objects of tens of microns are distinguishable even without reaching the limit resolution of the microscope.