Ruonan Han’s research is driving up the speeds of microelectronic circuits to enable new applications in communications, sensing, and security. Han, an associate professor who recently earned tenured in MIT’s Department of Electrical Engineering and Computer Science, focuses on producing semiconductors that operate efficiently at very high frequencies in an effort to bridge what is known as the “terahertz gap.” The terahertz region of the electromagnetic spectrum, which lies between microwaves and infrared light, has largely eluded researchers because conventional electronic devices are too slow to manipulate terahertz waves. “Traditionally,…
