Did you do a SEM image of the cross section of your resist pattern to make sure you have a re-entrant profile ? Are you using evap or sputtering ? ----------------------------------- Matthieu Nannini McGill Nanotools Microfab Manager t: 514 398 3310 c: 514 758 3311 f: 514 398 8434 http://miam2.physics.mcgill.ca/ ------------------------------------