This book covers 2D materials, transistors, and low-power transistor technologies. Additionally, it discusses wide range of semiconductor devices such as transistors, LEDs, energy harvesting devices, and spintronics devices. Covers nanoscale semiconductor materials, low-power transistors, and applications in integrated circuits. Offers comprehensive coverage of design, simulation, and experimentation for a range of field-effect transistors. Highlights the importance of using piezoelectric nanogenerators for energy applications. Showcases the developments in nanoscale device simulation and opportunities in electronic fabrication. Explains the latest nanoscale sensors, micro to nanoscale energy harvesting devices, and nano energy storage devices. The book is primarily written for senior undergraduates, graduate students, and academic researchers in electrical engineering, electronics, and communications engineering.