nanoHUB-U Fundamentals of Nanoelectronics B: Quantum Transport: Scientific Overview скачать в хорошем качестве

nanoHUB-U Fundamentals of Nanoelectronics B: Quantum Transport: Scientific Overview

Table of Contents: 00:00 Scientific Overview 00:51 The New Perspective 05:41 Where is the Resistance? 08:08 What & where is the voltage? 10:00 "Elastic Resistor" 12:37 Rigorous theory 14:23 An Example 18:50 NEGF: New Perspective 20:30 A Note for Advanced Students 23:18 FUNDAMENTALS OF NANOELECTRONICS This video is the Scientific Overview for the nanoHUB-U course "Fundamentals of Nanoelectronics Part B: Quantum Transport" by Supriyo Datta. It is currently available on nanoHUB at (https://nanohub.org/courses/fon2) and on EdX (https://www.edx.org/course/fundamenta...) The modern smartphone is enabled by a billion-plus nanotransistors, each having an active region that is barely a few hundred atoms long. Interestingly the same amazing technology has also led to a deeper understanding of the nature of current flow on an atomic scale and my aim is to make these lessons from nanoelectronics accessible to anyone in any branch of science or engineering. I will assume very little background beyond linear algebra and differential equations, although we will be discussing advanced concepts in non-equilibrium statistical mechanics that should be of interest even to specialists. In the first half, Part A, of this course (4 weeks) we introduce a new perspective connecting the quantized conductance of short ballistic conductors to the familiar Ohm's law of long diffusive conductors, along with a brief description of the modern nanotransistor. In the second half, Part B, (4 weeks) we will address fundamental conceptual issues related to the meaning of resistance on an atomic scale, the interconversion of electricity and heat, the second law of thermodynamics and the fuel value of information.