Collaborative Research: The Origin of Resistance in Nanotubes: Semi-classical to Quantum Transport in One-Dimension

技术摘要：凝聚态物理的基本进展需要全面理解完美晶格中相互作用和无序对非相互作用电子的影响。一维（1D）电子系统为物理学家提供了一片沃土，因为相互作用和无序可以完全改变它们的物理行为。本项目将确定单壁碳纳米管（一种理想的一维材料）中电阻的基本来源，并探索具有明确手性结构的纳米管中电子-电子相互作用的局部化现象和结果，作为无序性和相互作用强度的函数。研究结果将对碳纳米管技术产生广泛而长期的影响。纳米管目前正在评估和开发用于许多变革性应用，包括高速电子；用于太阳能光伏电池的透明导电薄膜；以及电池电极的导电支架。了解声子和杂质的影响对于优化碳纳米管在这些应用中的性能至关重要。除了在UCF和哥伦比亚大学培训研究生外，该项目还将支持涉及K-12教育工作者和学生以及我们各自社区的教育推广活动，重点是纽约大都会地区和大奥兰多地区代表性不足的少数民族。摘要：单壁碳纳米管具有非凡的电子特性，这对纳米材料科学的基础和应用都具有重要意义。除了为探索一维系统中的不寻常物理提供肥沃的土壤外，纳米管目前正在被评估和开发用于许多变革性应用，包括高速电子；用于太阳能光伏电池的透明导电薄膜；以及电池电极的导电支架。本项目将研究具有明确原子结构的碳纳米管的输运特性，同时将实验环境控制到原子尺度，消除任何不必要的实验可变性。这种前所未有的方法使这个合作团队能够系统地研究碳纳米管的内在传输特性，经过多年的深入研究，这些特性仍然知之甚少。因此，这一结果将对碳纳米管科学和技术产生广泛的影响。最后，该项目将支持UCF和哥伦比亚大学的研究生培训，以及涉及K-12教育工作者和学生以及我们各自社区的教育推广活动，重点是纽约大都会地区和大奥兰多地区代表性不足的少数民族。

Technical abstract:Fundamental advances of condensed matter physics require a comprehensive understanding of the impact of interactions and disorder on non-interacting electrons in a perfect lattice. One-dimensional (1D) electron systems provide a fertile ground for physicists as interactions and disorder can completely alter their physical behavior. This project will determine the fundamental origin of resistance in single-wall carbon nanotube, an ideal 1D material, and explore the localization phenomena and the consequences of electron-electron interaction in nanotubes of well-defined chiral structure as a function of disorder and interaction strength. The results will have a broad, long-term impact on carbon nanotube technology. Nanotubes are currently being evaluated and developed for a number of transformative applications, including high-speed electronics; transparent, conducting films for solar photovoltaic cells; and conducting supports for battery electrodes. Understanding the impact of phonons and impurities is essential for optimizing carbon nanotube performance in these applications. Beyond training graduate students at UCF and Columbia, this project will support educational outreach activities involving K-12 educators and students, and our respective communities, with emphasis on underrepresented minorities in the New York metropolitan area and the Greater Orlando.Non-technical abstract:Single-wall carbon nanotubes possess extraordinary electronic properties, which are important for both fundamental and applied nanoscale materials science. In addition to providing a fertile ground for exploring unusual physics in one-dimensional systems, nanotubes are currently being evaluated and developed for a number of transformative applications, including high-speed electronics; transparent, conducting films for solar photovoltaic cells; and conducting supports for battery electrodes. This project will study transport properties of carbon nanotubes of well-defined atomic structure while controlling the experimental environment down to atomic scale, eliminating any unwanted experimental variability. Such unprecedented approach enables this collaborative team to systematically investigate the intrinsic transport properties of carbon nanotubes, which remain poorly understood after years of intensive research. As such, the results will have a broad impact on carbon nanotube science and technology. Finally, this project will support training of graduate students at UCF and Columbia, as well as educational outreach activities involving K-12 educators and students, and our respective communities, with emphasis on underrepresented minorities in the New York metropolitan area and the Greater Orlando.