Juejun (JJ) Hu is currently a Professor of Materials Science and Engineering at MIT. He holds a Ph.D. degree (2009) from MIT and a B.S. degree (2004) from Tsinghua University, China, both in Materials Science and Engineering. Prior to joining MIT, Hu was an Assistant Professor at the University of Delaware from 2010 to 2014.

Hu has authored and coauthored over 140 refereed journal publications and has been granted 17 patents. Hu has been recognized with the SPIE Early Career Achievement Award, the Vittorio Gottardi Prize from the International Commission on Glass, the DARPA Young Faculty Award, and the NSF CAREER Award, among others. He is a fellow of Optica (formerly OSA).

Hu has been involved with the ACerS Glass & Optical Materials Division (GOMD) since 2006 and is a recipient of the Robert L. Coble Award from ACerS. He served as the Program Chair for the Glass and Optical Materials Division Meeting in 2012 and has been an active symposium organizer on multiple ACerS conferences including GOMD, ICC, ICACC, and PACRIM. His primary research interest covers new optical materials exemplified by chalcogenide compounds, as well as enhanced photon-matter interactions in nanophotonic structures. His main scientific and technical contributions include the demonstration of digital Fourier Transform (dFT) spectroscopy, mechanically flexible and stretchable photonic circuits, a flat fisheye lens with panoramic view, new optical phase change materials with unprecedented broadband transparency, and the first optical isolator monolithically integrated on silicon. Technologies developed in his lab has led to several spin-off companies.