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潜力，为新的纳米技术的进步。 该研究项目的中心目标是通过新开发的“交互式显微镜”技术来理解和控制石墨烯纳米结构中的原子尺度行为。这些方法允许石墨烯纳米结构不仅在原子尺度上被探测，而且还被操纵。 该项目的战略围绕着扫描隧道显微镜和透射电子显微镜的互补使用，以表征和操纵石墨烯在M.F. Crommie和A.泽特尔 这两种显微镜技术将以协调、协作的方式用于探索石墨烯纳米结构的基本电子和结构特性，例如边缘、缺陷、纳米带和纳米片，并将这些特性与石墨烯纳米器件行为关联起来。 该项目将为研究生、本科生和高中生提供跨学科领域的科学培训。 ** 非技术摘要 ** 石墨烯是一种引人注目的新材料，它由以周期性蜂窝图案化学键合的单层碳原子组成。 这种材料有很大的希望创造新的电子，磁性和机械设备，可以微型化超过目前的技术水平，具有巨大的潜在优势。 然而，为了实现这些优点，石墨烯的性质必须被理解和控制到原子尺度（即，小到单个原子的大小）。 该研究项目的中心目标是通过新开发的交互式显微镜技术执行这项任务。 这些技术允许石墨烯不仅在原子长度尺度上成像，而且还可以在相同的小长度尺度上操纵和改变。具有原子尺度空间分辨率的不同最先进的显微镜技术将用于协调，协作的方法，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器件的基本电学和结构特性。 至关重要的形状包括例如宽度在10纳米范围内的石墨烯带。 该项目将为研究生，本科生和高中生提供跨学科的科学培训，提供最强大的现代显微镜和设备表征方法。

******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.