Disentangling topographic contributions to near-field scanning microwave microscopy images.

ABSTRACT: We develop empirical models to predict the contribution of topographic variations in a sample to near-field scanning probe microwave microscopy (NSMM) images. In particular, we focus on |S₁₁| images of a thin Perovskite photovoltaic material and a GaN nanowire. The difference between the measured NSMM image and this prediction is our estimate of the contribution of material property variations to the measured image. Prediction model parameters are determined from either a reference sample that is nearly free of material property variations or directly from the sample of interest. The parameters of the prediction model are determined by robust linear regression so as to minimize the effect of material property variations on results. For the case where the parameters are determine

SUBMITTER: Coakley KJ 

PROVIDER: S-EPMC6482031 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature