Juejun Hu

Research

Professor Juejun Hu’s research group develops novel materials and devices that harness light-matter interactions across a broad range of applications, including on-chip sensing and spectroscopy. Leveraging digital Fourier transform technology, the group has built miniaturized, rugged sensors that are compatible with mass production for industrial process control, medical imaging, and space systems.
 
Another major focus is optical phase-change materials and meta-optics. Optical phase-change materials exhibit reversible changes in their optical properties during solid-state phase transitions. By integrating these materials into photonic platforms, the group has pioneered reconfigurable optical devices that can be programmably adapted to specific functionalities.
 
Additional research directions include flexible and polymer photonics for biomedical monitoring and high-speed data communications, advanced imaging and sensing optics for consumer and automotive electronics, and magneto-optical isolation. In the latter area, the group is developing chip-scale nonreciprocal photonic devices that function as one-way valves for light, enabling robust operation of next-generation optical communication and navigation systems.

Biography

Professor Hu earned a BS in materials science and engineering at Tsinghua University in 2004 and a PhD in the same discipline at MIT in 2009. Before joining MIT, he was an assistant professor at the University of Delaware from 2010 to 2014. Professor Hu is a fellow of professional societies including the American Ceramics Society, Optica, and SPIE.