The nanoindentation experiment was carried out to estimate nanomechanical characteristics
of polycarbonate polymer films. Hardness, effective elastic modulus and contact stress–
strain rate curve were obtained. The results showed that the effective elastic modulus and
the hardness decreased as the applied load was increased. As the hold time was increased,
the effective elastic modulus and the hardness also decreased. Furthermore, decreasing the
loading rate also decreased the effective elastic modulus and the hardness. A power-law …