CAREER: Nonlinear Carbon Nanotube and Nanowire Morphologies for Unique Nanoelectronics

本研究的目的是详细研究非线性碳纳米管（CNT）结构，如纳米结和纳米线圈的电性能，用于开发新型的纳米电子元件，包括电气开关，逻辑元件，混频器和纳米电感器。该办法包括：（1）通过化学气相沉积工艺控制合成CNT形态，例如Y结和纳米螺旋，（2）通过透射电子显微镜进行结构分析，（3）研究生长机制和缺陷，（4）研究纳米级导电机制器件建模，（5）电气和光电电路的布局&，以及（6）通过高频测量探索器件操作的极限。智力优点：对新型CNT结构的拟议研究可能会通过使用新的物理原理和开发新的器件类别来引入新的纳米电子技术。 独特的电性能已被预测为非线性碳纳米管结构，在结区的不对称性的基础上，预示着新一代的纳米电子学。在初步测量中，观察到三端Y结中的新型反相/开关行为以及纳米线圈/螺旋中的纳米电感行为，这为工作奠定了基础 它可能导致许多新的应用，更广泛的影响将是：（a）与民用和军用应用相关的纳米级器件的制造，与传统的硅基技术相比，该纳米级器件具有低功耗、抗辐射和减少散热的优点，以及（B）在传达新科学和器件范例的兴奋方面向社区推广，通过新生研讨会和新课程，沿着本科生和研究生的指导。通过与普鲁斯高中合作，将开发学生和教师交流计划

The objective of this research is detailed study of the electrical properties of nonlinear carbon nanotube (CNT) structures, such as nanojunctions and nanocoils, for developing new types of nanoelectronic components including electrical switches, logic elements, frequency mixers, and nanoscale inductors. The approach incorporates: (1) controlled synthesis of CNT morphologies such as Y-junctions and nanohelices through chemical vapor deposition processes, (2) structural analysis through transmission electron microscopy, (3) investigation of growth mechanisms and defects, (4) study of the nanoscale electrical conduction mechanisms & device modeling, (5) layout of electrical and optoelectronic circuits, and (6) exploring the limits of device operation through high frequency measurements. Intellectual merit: The proposed research into novel CNT structures may well usher in a new nanoelectronics technology through the use of new physical pronciples and the development of new classes of devices. Unique electrical properties have been predicted for nonlinear CNT structures, based on asymmetry at the junction regions, and portend a new generation of nanoelectronics. In preliminary measurements, novel inverting/switching behavior in three-terminal Y-junctions, and nanoscale inductive behavior in the nanocoils/helices was observed which forms the foundation for the work It could result into many new applications.The broader impact would be: (a) the fabrication of nanoscale devices with the advantages of low power consumption, radiation hardness, and reduced heat dissipation over conventional silicon based technologies, relevant to civilian and military applications, and (b) outreach to the community in terms of conveying the excitement of novel science and device paradigms, through freshman seminars and new courses, along with undergraduate and graduate student mentoring. By working with Preuss High School, a student and teacher exchange program will be developed