Craig L. Johnson, Ph.D. 
Director of Operations 
Manager, TEM & FIB 
115 Bossone Research Center 
Tel: 215-895-5900 
E-mail: clj46@drexel.edu

MCC Director of Operations, Dr. Craig Johnson joined the MCC team in 2008 as the transmission electron microscopy specialist. His research background includes time working on advanced transmission electron microscopes at a CNRS lab in Toulouse, France and Brookhaven National Lab. Craig received his PhD in Chemistry from Arizona State University, where he studied defect structures in geologically important minerals using high-resolution transmission electron microscopy.

Dmitri Barbash, Ph.D. 
Senior Research Scientist 
Manager, XPS & XRD
112 Bossone Research Center 
Tel: 215-571-4611
E-mail: dvb36@drexel.edu 

Dr. Dmitri Barbash joined the MCC team in 2012 to manage the X-ray photoelectron spectroscopy and X-ray diffraction instrumentation. Dmitri received his PhD from the University of New Mexico where he developed XPS and ToF-SIMS techniques for the study of pharmaceuticals. He also spent 6 years as a field-service engineer for Physical Electronics installing and servicing XPS and ToF-SIMS instrumentation across the country (including the XPS in the MCC).

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