STM verification of the reduction of the Young s modulus of CdS nanoparticles as a function of size

We demonstrate the first STM evaluation of the Young s modulus E of nanoparticles NPs of different sizes The sample deformation induced by tip sample interaction has been determined using currentb distance Ib Z spectroscopy As a result of tip sample interaction and the induced surface deformations the I z curves deviates from pure exponential dependence Normally in order to analyze the deformation quantitatively the tip radius must be known We sho