Energy-efficient logic and memory devices for future data-centric computing paradigm; Carbon-based and other emerging nano-materials including carbon nanotube, graphene, GNR, and TMDs; Experimental and computational nano-device research focusing on electronic (electron)/thermal (phonon)/magnetic (spin) transport; Beyond-CMOS nanoelectronics including spintronics (spin + electronics, magneto-electronics), steep sub-threshold swing (sub-60 mV/dec) transistors, and energy-harvesting and -conversion materials and devices technology