Present and future electronics are limited by challenges ranging from atomistic understanding of materials, to power dissipation in devices and systems. In this context, our research is geared towards energy-efficient electronics by understanding the interplay between electrical power consumption and heat generation or dissipation in nanoscale devices. We study two-dimensional (2D) materials, as well as oxides, chalcogenides, and ferroelectrics for various types of devices including transistors, memory cells, resistive memories (memristors), threshold switches, and neuromorphic devices. Some projects are outlined below.