非易失性碳纳米管存储单元的双稳态结构设计和管内分子运动的控制方法研究

项目名称： 非易失性碳纳米管存储单元的双稳态结构设计和管内分子运动的控制方法研究

项目编号： No.11302194

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 叶森斌

作者单位： 浙江工业大学

项目金额： 28万元

中文摘要： 本项目针对碳纳米管存储单元在较高（室）温下的易失性和碳纳米管内分子运动的控制问题，建立碳纳米管存储单元的双稳态结构模型，分析碳纳米管的尺寸、结构以及电极材料等参数对系统势能的影响，提出碳纳米管存储单元在较高（室）温下具有非易失性的设计参数；采用分子动力学和量子力学计算方法，模拟碳纳米管内分子在外场作用下的运动行为，提出碳纳米管内分子运动的控制方法；开展电子束激励下的碳纳米管内分子运动的实验研究，揭示在外界环境干扰刺激下碳纳米管内分子从双稳态势阱中逃逸的易失性运动特征。本项目解决了碳纳米管存储单元不能在较高（室）温下非易失性工作的缺陷，提出了碳纳米管内分子在纳米尺度上的驱动和控制方法，研究成果对碳纳米管存储技术在非易失性分子存储领域的发展具有推动作用。

中文关键词： 存储单元；非易失性；碳纳米管；分子动力学；分子运动

英文摘要： Aiming to the volatility of carbon nanotube-based memory cell in room temperature environment and its interior molecular motion control, we will design a carbon nanotube-based memory cell model and propose a optimized bistable structure for nonvolatile storage in a high (room) temperature environment, by taking account into carbon nanotube's size, structure and electrode's material type; Using molecular dynamics and quantum mechanics approach, we will investigate the relative motion of the moving molecular inside the carbon nanotube, to better understand the interaction between interior molecular and the external electric or thermal gradient field and propose a method to control the interior molecular motion; Electron beam stimulated molecular motion will be experimentally studied, to demonstrate the behavior of the interior molecular when it is exposed to an external disturbing excitation. In this project we will make the carbon nanotube-based memory cell work nonvolatile in a high（room）temperature environment and propose an approach to drive and control the interior nanoscale molecular motion inside carbon nanotube. The success of our project will lead to a significant advancement of carbon nanotube-based memory cell in the future development of high-speed computing and nonvolatile storage.

英文关键词： memory cell；nonvolatile；carbon nanotube；molecular dynamics；molecular motion