Figure 3
From: Ultra-low thermal conductivities in large-area Si-Ge nanomeshes for thermoelectric applications
(a) SEM image of a Si0.8Ge0.2 nano-meshed film of ~294 nm porous size. (b) Topography by AFM And (c) surface potential image by KPM. The uniformity in the contrast of the KPM image reveals homogeneity in the surface potential of the film.
