Hello Al, I wonder if SU8 is a good candidate for ebeam lithography since I know below 350 nm, it behaviour can be difficult. Also, has someone try to see the resolution obtained with EBL and SU8 Is it possible to make successive exposition-developpement on a thick layer of SU8, in order to pattern higher aspect rations, if a good resolution table permits to positionate the sample exactly at the same place? many thanks Joe --------------------------------- Découvrez le nouveau Yahoo! Mail : 250 Mo d'espace de stockage pour vos mails ! Créez votre Yahoo! Mail