准一维碳纳米线圈的导电机制及其光、热、力响应研究

项目名称： 准一维碳纳米线圈的导电机制及其光、热、力响应研究

项目编号： No.11274055

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 潘路军

作者单位： 大连理工大学

项目金额： 86万元

中文摘要： 准一维碳纳米线圈，由于其特异的空间构象和纳米尺度，有望产生新奇的光、热、力、电特性，在纳米电子器件、微纳机电系统中都极具潜在的应用前景。国际上对碳纳米线圈的物理特性研究尚处于起步阶段，揭示了一些有趣的力学、导电、导热和电子结构特性，但是很不系统。本项目以单根碳纳米线圈的导电性为中心，以物质结构和电子结构两方面研究为基础，通过实验与理论相结合，对单根碳纳米线圈的导电性及其光、热、力响应等开展一系列的实验测量，结合多尺度计算模拟，揭示由于准一维的螺旋性和独特的多晶-非晶体系带来的新奇物理特性，特别是原子结构和相应的电子结构、以及由此而产生的电导率、光电、热电、力电响应特性，从而构建出碳纳米线圈整体基础物理图像。这些研究，将不仅丰富我们对于低维碳纳米材料基础物理的认识，而且有望揭示某些纳米尺度上的新现象和新效应，也将为发展新一代微纳机电系统和其它纳米器件提供基础器件和构造基元。

中文关键词： 碳纳米线圈；导电特性；光电特性；热电特性；力电特性

英文摘要： Quasi one-dimensional carbon nanocoils, due to their peculiar morphologies and nanometer sizes, are expected to generate a novel optical, thermal, mechanical and electrical properties, which have potential applications in electronic nanodevices, micro/nano electromechanical systems(MEMS/NAMS). The world-wide studies on physical properties of carbon nanocoils are still at the starting stage. These studies have revealed some interesting mechanical, thermal, conductive, and electron structural properties, but they are scattered and not systemic. Focusing on the conductivity of an individual carbon nanocoil and basing on the material and electronic structures of carbon nanocoils, a series of experiments on the conductivity of an individual carbon nanocoil and its optical, thermal and mechanical responses will be carried out in this project. Multi-scaled simulations will be also adopted to reveal the novel physical properties aroused by the quasi one-dimensional helix and unique polycrystalline-amorphous system, especially the atomic structures and the corresponding electronic structures, as well as the generated responding properties of electroconductive, photoconductive, thermal conductive, and electromechanical responses. On the base of these results, we try to construct a comprehensive and fundamental physics of

英文关键词： carbon nanocoil；conductive property；photoelectronic property；thermal electronic property；electromechanical property