Contact
Prof. Alan T. Charlie Johnson, Jr.
University of Pennsylvania
Department of Physics and Astronomy
David Rittenhouse Laboratories
209 S 33rd Street
Philadelphia, PA 19104
Email: cjohnson@physics.upenn.edu
![](https://nanophys.seas.upenn.edu/wp-content/uploads/2023/07/20bi0510l-3.jpeg)
Lab located in BC4 (basement level).