Properties of Buckytubes and Mechanisms for Their Formation

[199703669]张本项目将重点研究受控直流电弧放电和热蒸发系统中巴基管和巴基束成核和生长的机制。光诱导荧光测量和质谱将用于确定负责巴基管和纳米线形成的碳前体的时间演变和空间分布。将建立一个模型来解释观测到的巴基管形成的物理现象。正在探索这些材料的几个应用领域。由于施加在巴基管尖端的高场，电子的发射正在研究可能应用于平板显示器。研究了铜纳米线的电子传输特性，以期在集成电路中应用。这是一个涉及研究生、博士后、本科生、大学教师和高中教师的综合研究和教育项目。* * *

1 9703669 Chang This project will focus on studies of the mechanisms of buckytube and buckybundle nucleation and growth in a controlled direct current arc discharge and a thermal evaporating system. Photo-induced-fluorescence measurements and mass spectroscopy will be used to determine the time evolution and spatial distribution of the carbon precursors responsible for buckytube and nanowire formation. A model will be developed to explain the observed physical phenomena of buckytube formation. %%% Several areas of application are being explored for these materials. The emission of electrons due to high fields applied to the buckytube tips are being studied for possible application to flat panel displays. The electron transport properties of copper nanowires are being studied for possible application as interconnects in integrated circuits. This is a well integrated research and education project that has involved graduate students, postdocs, undergraduates, college teachers and high school teachers. ***