Similar to KOH etching, TMAH is commonly used for fast removal and silicon
micromachining.
1. TMAH Etching Rates vs. Orientation
The orientation dependence of the TMAH etch rate is similar to KOH and varies
similarly in accordance to the atomic organization of the crystallographic plane.
Table 3 relates silicon orientation-dependent etch rates of TMAH (20.0wt%,
79.8°C) to orientation. Table 3 is taken directly from