Dear all , I am evaporating Ti (200A) and Au (3000A) on top of a polyimide surface to make contacts . but I failed to get a good adhesion , I tried using plasma to make the surface rough but I didn't get a good adhesion also. Any suggestions?. thank you -- Ahmad N. AL-Omari Graduate Student Electrical & Computer Engr. Dept. Colorado State University Fort Collins , CO 80521 -- 970-491-2258 (Office) 970-217-7615 (Cel.) 970-491-2249 (Fax)