Ultra Fast Digital Circuits Using 3-Terminal NDR Devices

高速逻辑是现代计算机和数字系统的重要组成部分。本项目旨在探索一类新型负差分电阻（NDR）器件在数字设计中的应用。几种新型器件，如谐振隧道二极管，正负纳米管和其他器件具有高开关速度和负差分电阻（NDR）。NDR特性已经在振荡器和微波电源中得到了应用，但到目前为止，这些器件在数字应用中的应用还没有得到探索。我们的初步结果表明，这些器件可用于构建具有皮秒延迟的高速算术电路，几乎比任何其他已知的半导体电路快一个数量级。

High speed logic is an essential component of modern computer and digital systems. This project proposes to explore the application of a new class of negative differential resistance (NDR) devices to digital design. Several new types of devices such as resonant tunneling diodes, CHINTS and other devices exhibit high switching speeds and negative differential resistance (NDR). The NDR characteristics have found applications in oscillators and microwave power sources but the use of these devices for digital applications has been explored so far. Our preliminary results indicate that these devices could be used to build high speed arithmetic circuits with picosecond delays, almost an order of magnitude faster than any other known semiconductor circuits.