Associate Professor Keith Herold joined the University of Maryland's Department of Mechanical Engineering in 1987, where his research focused on energy systems and absorption refrigeration. In 2000, he shifted his focus to bioengineering and began exploring biosensors, microarrays, and related lab-on-a-chip technologies. In 2006 he joined the newly formed Fischell Department of Bioengineering, where his work in these areas continues. His current research projects include collaborations with the FDA on a DNA-based pathogen biosensor, and with electrophysiologists at the University of Maryland School of Medicine on the analysis of patients suffering from ventricular tachycardia.