Zhaojun Liu, Ph.D., is currently an assistant professor with Sun Yat-sen University-Carnegie Mellon University Joint Institute of Engineering (JIE) and Shunde International Joint Research Institute (JRI). He received the B.Eng. degree in Electrical Engineering and Automation from the Hebei University of Technology in 2003, the M.Phil. degree in Physical Electronics from Nankai University in 2007, and the Ph.D. degree in Electronic and Computer Engineering (ECE) from the Hong Kong University of Science and Technology (HKUST) in 2011. He was a research assistant with the State Key Laboratory on Advanced Displays and Optoelectronics Technologies (PSKL) at HKUST in Oct. 2006-Apr. 2007. He was a postdoctoralfellow with the Photonics Technology Center (PTC) at HKUST in Jan. 2011-July 2013. He was a visiting assistant professor with the ECE department at HKUST in Aug. 2013 Sept. 2014. He is an adjunct assistant professor with ECE department at HKUST since Sept. 2014 and a visiting professor with ECE department at Carnegie Mellon University since Dec. 2015. Dr. Liu is the core member of the Pearl River Talent Plan 5th Innovation Team of Guangdong Province. His research interests focused on (1) GaN LED micro-display, solid-state lighting and monolithic integration with GaN HEMTs; (2) Wearable Electronic & Photonic devices, and (3) 2D materials & devices.