Effective removal of global tilt from topography images of vicinal surfaces with narrow terraces

Effective removal of global tilt from topography images of vicinal surfaces with narrow terraces

The main feature of vicinal surfaces of crystals characterized by the Miller indices (hhm) is rather small width (less than 10 nm) and substantially large length (more than 200 nm) of atomically-flat terraces on sample surface. This makes difficult to apply standard methods of image processing and c...

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Veröffentlicht in:arXiv.org 2024-09
Hauptverfasser: A Yu Aladyshkin, Chaika, A N, Semenov, V N, Ionov, A M, Bozhko, S I
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Image processing
Physics - Materials Science
Terraces
Topography
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description The main feature of vicinal surfaces of crystals characterized by the Miller indices (hhm) is rather small width (less than 10 nm) and substantially large length (more than 200 nm) of atomically-flat terraces on sample surface. This makes difficult to apply standard methods of image processing and correct visualization of crystalline lattices at the terraces and multiatomic steps. Here we consider two procedures allowing us to minimize effects of both small-scale noise and global tilt of sample: (i) analysis of the difference of two Gaussian blurred images, and (ii) subtraction of the plane, whose parameters are determined by optimization of the histogram of the visible heights, from raw topography image. It is shown that both methods provide nondistorted images demonstrating atomic structures on vicinal Si(556) and Si(557) surfaces.
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subjects Image processing
Physics - Materials Science
Terraces
Topography
title Effective removal of global tilt from topography images of vicinal surfaces with narrow terraces
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