Hi again, Sorry Dave but I think you missunderstood me. I was talking about electroless plating. I have no possibility to connect a current to my wafers. I want to remove the oxide layer chemically. Best regards, Martin -----Original Message----- From: David Roberts [mailto:dave@prodigysurfacetech.com] Sent: Montag, 17. Dezember 2007 18:25 To: 'General MEMS discussion' Cc: nolanharding@msn.com Subject: RE: [mems-talk] Removal of native oxide layer on Nickel Hi Martin, Use cathodic activation @ 20mA/cm2 for 2 minutes in 10% sulfuric acid with a Pt anode. Regards, Dave