What Techniques are Used to Measure Mechanical Stress at the Nanoscale?
Several advanced techniques are employed to measure and analyze mechanical stress in nanomaterials, including:
Atomic Force Microscopy (AFM): AFM can measure the force between a sharp tip and the material surface, providing insights into mechanical properties at the nanoscale. Nanoindentation: This technique involves pressing a hard, sharp tip into a material to measure its hardness and elastic modulus. Raman Spectroscopy: Changes in the Raman spectra can indicate stress and strain in materials like graphene and carbon nanotubes. Transmission Electron Microscopy (TEM): TEM can visualize dislocations and other stress-related defects at atomic resolution.
