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A computer algorithm was developed to automatically track the displacement of straight step edges between sequential scanning probe microscopy images of single-crystal surfaces. The program utilizes the Canny edge detection algorithm followed by the Hough Transform of the edge map to identify step edges according to their direction, relative to the image axes, and according to their displacement,...
Phase transitions of Ba adsorption on a clean Si(001)-(2×1) studied by low energy electron diffraction (LEED) and Auger electron spectroscopy (AES) are reported. The depositions of the Ba were performed with (a) the substrate held at room temperature followed by annealing at elevated temperatures, and (b) the substrate held at 900°C. While confirming earlier established phases, the existence of 4×...
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