David J. E. Callaway is a biological nanophysicist in the New York University School of Medicine, where he is Professor and Laboratory Director. He was trained as a theoretical physicist by Richard Feynman, Kip Thorne, and Cosmas Zachos, and was previously an associate professor at the Rockefeller University after positions at CERN and Los Alamos National Laboratory. Callaway's laboratory discovered potential therapeutics for Alzheimer's disease based upon apomorphine after an earlier paper of his developed models of Alzheimer amyloid formation. He has also initiated the study of protein domain dynamics by neutron spin echo spectroscopy, providing a way to observe protein nanomachines in motion.