Interactive Microscopy of Graphene Nanostructures

*技术摘要*石墨烯是一种引人注目的新分离的二维材料，具有新颖的物理性质和巨大的纳米技术进步潜力。这个研究项目的中心目标是通过新开发的“交互显微镜”技术来理解和控制石墨烯纳米结构中的原子尺度行为。这些方法不仅允许在原子尺度上探测石墨烯纳米结构，而且还允许对其进行操纵。该项目的战略围绕着在M.F.Crommie和A.Zettl团队的合作下，互补使用扫描隧道显微镜和透射电子显微镜来表征和操纵石墨烯。这两种显微技术将在一种协调、协作的方法中使用，以探索石墨烯纳米结构的基本电子和结构属性，如边缘、缺陷、纳米带和纳米小片，并将这些属性与石墨烯纳米设备行为相关联。该项目将在一个跨学科很强的领域为研究生、本科生和高中生提供科学培训。*非技术摘要*石墨烯是一种引人注目的新材料，它由一张碳原子以周期性的蜂窝图案化学键合而成。这种材料在创造新的电子、磁性和机械设备方面有很大的希望，这些设备可以超越当前技术的水平进行微型化，具有巨大的潜在优势。然而，要实现这些优势，石墨烯的性质必须被理解并控制在原子级别(即单个原子的大小)。这项研究项目的中心目标是通过新开发的交互显微镜技术来完成这项任务。这些技术使石墨烯不仅可以在原子长度尺度上成像，还可以在同样小的长度尺度上进行操作和改变。具有原子尺度空间分辨率的不同最先进的显微技术将以协调、协作的方式使用，以探索在非常小的长度尺度上具有不同形状和无序特性的石墨烯装置的基本电学和结构特性。例如，极其重要的形状包括宽度在10纳米范围内的石墨烯条带。该项目将为研究生、本科生和高中生提供最强大的现代显微镜和设备表征方法的跨学科科学培训。

******TECHNICAL ABSTRACT*******Graphene is a remarkable newly isolated two-dimensional material that has novel physical properties and great potential for new nanotechnological advances. The central goals of this research project are to understand and control atomic-scale behavior in graphene nanostructures via newly developed techniques of "interactive microscopy". These methods allow graphene nanostructures to be not only probed at the atomic scale, but also to be manipulated. The strategy for this project revolves around the complementary use of scanning tunneling microscopy and transmission electron microscopy to characterize and manipulate graphene in a collaborative effort between the groups of M.F. Crommie and A. Zettl. Both microscopy techniques will be used in a coordinated, collaborative approach to explore the fundamental electronic and structural properties of graphene nanostructures such as edges, defects, nanoribbons, and nanoplatelets, and to correlate these properties with graphene nanodevice behavior. This project will provide scientific training to graduate students, undergraduates, and high school students in a strongly interdisciplinary area. *******NON-TECHNICAL ABSTRACT********Graphene is a remarkable new material that consists of a single sheet of carbon atoms chemically bonded in a periodic honeycomb pattern. This material has great promise for creating new electronic, magnetic, and mechanical devices that can be miniaturized beyond the level of current technology, with great potential advantages. To realize these advantages, however, the properties of graphene must be understood and controlled down to the atomic-scale (i.e., down to the size of single atoms). The central goal of this research project is to perform this task via newly developed interactive microscopy techniques. These techniques allow graphene to not only be imaged at atomic length scales, but also to be manipulated and changed at this same small length scale. Different state-of-the-art microscopy techniques with atomic-scale spatial resolution will be used in a coordinated, collaborative approach to explore the fundamental electrical and structural properties of graphene devices having different shapes and disorder properties at very small length scales. Critically important shapes include, for example, ribbons of graphene that have a width in the range of 10 nanometers. This project will provide interdisciplinary scientific training to graduate students, undergraduates, and high school students in the most powerful modern methods of microscopy and device characterization.