Nasir is invited to attend the Saudi Arabia/United States Innovation to Impact Roundtable!

This exclusive series of roundtables will bring together 100+ university presidents, senior innovation and technology business leaders, entrepreneurs, government agencies, and venture capitalists from Saudi Arabia and the United States of America. Discussions will focus on enhancing collaboration and partnership agreements between the two countries and exploring joint research and investment opportunities catalyzed by Saudi Arabia’s Vision 2030.​

Prof Xiaohang Li gets highlighed in KAUST News!

Xiaohang Li is an assistant professor of electrical engineering in the University’s Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division. He received his B.S. degree in applied physics from Huazhong University of Science and Technology (China); his M.S. degree in electrical engineering from Lehigh University (U.S.); and his Ph.D. in electrical engineering from Georgia Tech (U.S.).

Nasir's APL gets published! The first demonstration of a link between the energy exchanged during the light-solid reaction and the thermodynamic entropy of nanowire structures

In this paper,1 we investigated the photoinduced entropy of InGaN/GaN p-i-n nanowires using temperature-dependent (6–290 K) photoluminescence. We also analyzed the photocarrier dynamics in the InGaN active regions using time-resolved photoluminescence. An increasing trend in the amount of photoinduced entropy of the system above 250 K was observed, while we observed an oscillatory trend in the generated entropy of the system below 250 K that stabilizes between 200 and 250 K. Strong exciton localization in indium-rich clusters, carrier trapping by surface defect states, and thermodynamic entropy effects were examined and related to the photocarrier dynamics. We conjectured that the amount of photoinduced entropy of the system increases as more non-radiative channels become activated and more shallowly localized carriers settle into deeply localized states; thereby, additional degrees of uncertainty related to the energy of states involved in thermionic transitions are attained.