Hi, Sravya, But sputtering give you tightly packed film. Thermal evaporated film is very loose and grainy. I wonder if sputtered Al film has better reflectivity? -Andrew ----- Original Message ----- From:To: Sent: Monday, July 24, 2006 11:14 AM Subject: [mems-talk] sputtering/Ebeam > KSAW: > I agree with Mr. Suraj Patil. > Sputtering can be an economic proc= > ess, but then not really reliable if you want a thin film. also the surf= > aces are much cleaner and smoother if it is Ebeam.