Product Manager
Gatan Inc.
Ray Twesten has been working in the field of electron microscopy for the past 25 years. He started his career as a PhD. student at the University of Illinois at Urbana-Champaign studying surface physics using a specially designed UHV TEM. From there, he moved to Sandia National Labs in Albuquerque, NM working to understand morphological instabilities in III-V and group-IV semiconductors. He rejoined the University of Illinois in 1997 as a staff scientist and laboratory manager for the TEM operations of the Center for Microanalysis of Materials. Since 2005, Dr. Twesten has been with Gatan in Pleasanton, CA, first with the EELS R&D group and later as the manager of the EELS product development group. He is currently the product manager for Gatan’s STEM, EELS and GIF products.