Mechanical behaviour of thin films on substrates: Debonding and buckling

摘要

In situ atomic force microscopy observations of nickel thin films on substrates under external compressive stresses have been carried out. Straight-sided wrinkles arise perpendicularly to the compression axis above a critical stress and undulations of very low amplitude also appear on these debonding regions. The dependence on stress of the shape of the wrinkles and of the undulations is discussed.