Marty DeWitt, PhD

Marty DeWitt is a postdoctoral associate in the Xu group where he is focused on developing the next generation of volume electron microscopes. The Xu lab, in partnership with the FIB-SEM Collaboration Core (F-SCC), uses state-of-the-art Focused Ion Beam Scanning Electron Microscopy (FIB-SEM) to study the structure and morphology of diverse biological samples with unmatched scale and resolution. Marty aims to push the limits of this technology even further, with lofty goals of achieving higher resolution, increased maximum imageable volume, and even capturing EM images in "color".

Marty graduated from Arizona State University and later received his Ph.D. in physical chemistry at the University of California, Berkeley. His doctoral research utilized Slow Electron Velocity-map Imaging (SEVI), a high-resolution variant of anion photoelectron spectroscopy, to study the vibrational and electronic structure of small molecules in the gas phase. The primary focus of his work at Berkeley centered on developing the SEVI technique further by vibrationally exciting the anions with resonant infrared radiation prior to photodetachment. This selective vibrational excitation reveals information on both the structure and dynamics of the molecular species, and shows the potential for viewing chemical reactions in ways no other technique is capable