Cornell researchers have developed microsensors that are tiny enough to fit 30,000 on one side of a penny. These microscopic sensors are equipped with an integrated circuit, solar cells and Micro LEDs that enable them to harness light for power and communication. The research was published in PNAS in April, titled “Microscopic Sensors Using Optical Wireless Integrated Circuits.” The research team devised a platform for parallel production of their optical wireless integrated circuits (OWICs), microsensors the size of 100 µm. Researchers in the st...