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绘制纳米管人脚结构的一维电子状态的映射

D J Hornbaker¹, S J Kahng, S Misra

¹Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

Science (New York, N.Y.)

|January 5, 2002

概括

在纳米管内部的C60分子阵列创建新的混合电子带. 封装的C60分子调整单壁纳米管的电子结构,使得新的纳米级材料成为可能.

科学领域:

纳米技术纳米技术
材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学

背景情况:

单壁纳米管 (SWNTs) 是具有独特电子性质的碳异构体.
在SWNT中封装分子提供了一条设计其特征的途径.
富勒C60是一种经过充分研究的碳分子,具有独特的电子行为.

研究的目的:

为了研究充满C60分子的SWNTs的电子特性.
了解封装的C60如何影响SWNTs的本地电子结构.
探索这种纳米系统中混合电子带的形成.

主要方法:

扫描道显微镜 (STM) 用于电子测量.
用C60填充的SWNTs的实验性表征.
计算计算以支持实验发现.

主要成果:

封装的C60分子显著改变SWNTs的局部电子结构.
C60分子的周期性排列导致混合电子带的形成.
这种混合波段表现出来自SWNT状态和C60分子轨道的特征.

结论:

填充C60的SWNT代表了一个可调节的纳米级材料,具有修改的电子特性.
C60和SWNT之间的相互作用导致新兴的电子带结构.
这项工作展示了一种方法,通过分子封装来设计纳米管的电子特性.

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