Carolyn Aita, University of Wisconsin-Milwaukee (image) University of Wisconsin - Milwaukee Share Print E-Mail Caption UWM Professor Carolyn Aita shows one of the "targets" used to form thin films in her "sputter deposition" equipment. In sputter deposition, energetic ions formed from a vapor bombard the target, sending energetic atoms from it scattering like billiard balls in a game of pool. Those atoms then coat the substrate in ultra-thin layers. Credit Alan Magayne-Roshak, UWM Photo Services Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.