The criterion for election is exceptional contributions to the physics enterprise; e.g., outstanding physics research, important applications of physics, leadership in or service to physics, or significant contributions to physics education. Fellowship is a distinct honor signifying recognition by one's professional peers.
For novel developments in neutron radiography and tomography leading to significant advances in lithium-ion batteries, hydrogen fuel cells, concretes, and additive manufacturing; and for the invention of simultaneous neutron/x-ray imaging for analysis of complex natural and engineered materials.