Figure 4From: Thermally controlled widening of droplet etched nanoholesGaAs surface with thermally widened holes. (a) AFM micrograph of a GaAs surface with large thermally widened holes after Ga droplet etching and 1,800-s annealing at T = 650℃. (b) Color-coded perspective view of a single large hole. (c) Linescans of the hole from (b).Back to article page