Engineers at Illinois' Northwestern University have developed the tiniest pacemaker you'll ever see. It's several times ...

The sensor allows the pilot light to be automatically re-ignited if the flame is no longer present. The circuit is a surprisingly simple one, with a PNP transistor being turned on by the flame ...

While previous research has demonstrated photonic synapses and artificial afferent nerves, these implementations require additional circuits ... neurons activated by near-infrared light.

Their optical system could guide the design of synthetic, light-activated cells for wound healing or drug delivery. Life takes shape with the motion of a single cell. In response to signals from ...