Moktadir, Z and Sato, K
Unstable etching of Si(110) with potassium hydroxide.
Phys. Rev. B, 64, .
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We present experimental data for the morphological evolution of Si(110) etched with potassium hydroxide. The observed results are interpreted using a continuum equation. The results reveal the presence of unstable etching which leads to the formation of a columnar structure on the surface. The early stage of the formation of this columnar structure can be explained by a linear theory. This instability is caused by anisotropic surface tension.
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