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Explore the concept of reciprocal lattice and valleys in this 21-minute lecture from the nanoHUB-U course "Fundamentals of Nanoelectronics Part B: Quantum Transport" taught by Supriyo Datta. Delve into advanced quantum transport concepts that form the foundation for understanding how billion-plus nanotransistors enable modern smartphones, where each transistor's active region spans merely a few hundred atoms. Learn how cutting-edge nanotechnology has deepened our understanding of current flow at the atomic scale through accessible explanations that require only basic knowledge of linear algebra and differential equations. Discover how this lecture contributes to bridging the gap between quantized conductance in short ballistic conductors and Ohm's law in long diffusive conductors, while addressing fundamental questions about resistance at atomic scales, electricity-heat interconversion, thermodynamics, and the relationship between information and energy in nanoelectronic systems.
