Washington University's Lihong Wang led the research team that invented a camera that can take up to 100 billion frames per second. Their work made the cover of the Dec. 4, 2014, issue of the journal Nature, where this image appeared.
This photo shows the new cardiac device ― a thin, elastic membrane ― fitted over a rabbit's heart. The membrane is imprinted with a network of electrodes that can monitor cardiac function and deliver an electrical impulse to correct an erratic heartbeat.
Credit University of Illinois and Washington University