Gary makes small magnetic things designed to go into big magnetic things. Things like microfabricated contrast agents and nanosensors that help big NMR/MRI scanners see small details, for projects like tracking single cells in vivo or monitoring local physiological conditions. Gary also works on novel microfabrication technologies as well as new magnetics-based sensor platforms. He currently serves as the group leader of the Magnetic Imaging Group in the Applied Physics Division.