Keywords: Etch selectivity.png A graphical representation of the selectivity of w etching Yellow layer to be removed; blue layer to remain This diagram shows a perfectly anisotropic etch A poorly selective etch removes the top layer but also attacks the underlying material A highly selective etch leaves the underlying material unharmed own 03 13 1 January 2007 UTC Smack talk Public domain Source file available upon request See also image Etch anisotropy png and image Aniso wet etch png Etching microfabrication |