CAREER: Fundamental and Device-Oriented Approach to Energy Efficient Carbon Nanoelectronics

这项研究的目的是研究新型器件和纳米材料中能量耗散的基本方面，重点是碳电子。该方法将研究碳纳米管和石墨烯中的能量损失和开关机制，这两种材料具有很好的本征电学和热学性质，但必须在器件范围内理解。智能优点：当今电子产品的能源使用范围从移动设备(MW)到海量数据中心(GW)。能量耗散始于纳米级的晶体管，它们的效率低得惊人，并像热量一样浪费大量的电能。这项工作将通过(1)研究远距离声子的作用来寻找最节能的电介质，(2)探索雪崩作为一种替代的开关机制，(3)建立焦耳加热和热击穿模型，以及(4)通过电测量和红外热成像来验证它们，从而研究碳纳米电子中的能量耗散。从这项研究中获得的基础知识也将扩展到所有基于电荷的纳米电子学。更广泛的影响：优化电子产品的能源消耗将影响广泛的技术，目前美国的用电量高达10%。在后cmos时代，这一领域的进步至关重要，并对环境产生重大影响。这个项目将训练学生思考能量消散的基本原理，吸引少数族裔和女性参与，并鼓励本科生发表文章。与当地教师和工程开放日的合作将吸引当地K-12学生，而与NanHUB的合作将接触到全球观众。将建造一个远程(联网)探测站，用于在课堂上测试纳米电子学，最终允许世界上任何人进入进行尖端设备测量。

The objective of this research is to examine fundamental aspects of energy dissipation in novel devices and nanomaterials, with focus on carbon electronics. The approach will study en-ergy loss and switching mechanisms in carbon nanotubes and graphene, which have great intrin-sic electrical and thermal properties, yet must be understood within in a device context. Intellectual Merit: Energy use in electronics today ranges from mobile devices (mW) to massive data centers (GW). Energy dissipation begins with nanoscale transistors, which are sur-prisingly inefficient and waste significant power as heat. This work will examine energy dissipa-tion in carbon nanoelectronics by (1) studying the role of remote phonons to find the most energy-efficient dielectrics, (2) exploring avalanche as an alternative switching mechanism, (3) developing models for Joule heating and thermal breakdown, and (4) validating them against electrical measurements and infrared thermal imaging. The fundamental knowledge derived from this research will also extend to all charge-based nanoelectronics. Broader Impacts: Optimizing energy dissipation in electronics will impact a wide range of technologies, and up to 10% of U.S. electricity use today. Progress in this area is crucial in a post-CMOS world, and has great environmental implications as well. This project will train students to think about fundamentals of energy dissipation, will engage minorities and women, and encourage undergraduates to publish. Work with local teachers and the Engineering Open House will engage local K-12 students, while a collaboration with the nanoHUB will reach a global audience. A remote (web-enabled) probe station will be built for testing nanoelectronics in class, eventually allowing access for anyone in the world to do cutting-edge device meas-urements.