These are liquid metal etchants of various compositions, targeting specific metals. Make sure to check the compatibility with other materials on your wafers when using.
List of Metal Etchants
Aluminum Etchant
aka "Al-Etch"
Chromium Etchant
aka "Chrome Etch"
Titanium (Ti) etchant Peroxide-based
Titanium (Ti) etchant Peroxide-based (H2O2)
aka "Ti-Etch"
(H2O2)
Tungsten (W) etchant Peroxide-based
Tungsten (W) etchant Peroxide-based (H2O2)
aka "W-etch"
(H2O2)
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