Does the DLC survive the KOH etch? Can the DLC serve as an etch mask for KOH etch? -----Original Message----- From: Nikhil Mehta Subject: RE: [mems-talk] is there anything else replacing SiO2 or Si3N4 forSietch mask (KOH)? yes... Brewer protex works great and we have used it.. to protect against KOH .. it gets removed with acetone.. however if you have small dies and not the wafer it did not work.. we used room temp PECVD process to grow hydrogenated DLC as etch stop in that.... case