Microscopy of Hierarchical 2-D Interface Structures

分层二维界面结构的显微镜观察

• 批准号: 1206512
• 负责人: Michael Crommie
• 金额: $ 79.5万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1206512&HistoricalAwards=false
• 关键词: Microscopy; Hierarchical; Interface; Structures

****Technical Abstract****The purpose of this project is to fabricate low-dimensional interface structures that enable the creation of new types of matter and the observation of new nanoscale phenomena. Such phenomena include interactions between atoms, molecules, and nanocrystals in low-dimensional environments defined by the interfaces between 2D layers of graphene and boron nitride (BN). This program will employ newly developed techniques for manipulating single layers of graphene and BN in order to fabricate low dimensional interface structures and to characterize them using scanning tunneling microscopy and transmission electron microscopy techniques. Interface structures will be decorated with a combination of atoms, molecules, and nanocrystal elements deposited via vacuum deposition and solvent-based spin-coating techniques. These structures will allow the exploration of completely new transmembrane chemical bonding and tunable electromagnetic behavior at the nanoscale. Graduate students, undergraduates, and postdoctoral researchers will be engaged at every level of this research, and will obtain training in state-of-the-art nanofabrication and microscopy techniques. High school students will be offered internships in this program to promote recruitment into the sciences.****Non-Technical Abstract****This project is aimed at characterizing new types of microscopic structures made by trapping atoms and nanometer-sized particles between two-dimensional layers of graphene and boron nitride (BN). Because the graphene and BN layers can be made only one-atom-thick, particles on either side of these membranes will interact strongly with one another, thus changing their overall properties in ways that have not been previously observed. Particles trapped at the interfaces between such membranes will be visible to different types of high-resolution electron microscopy, allowing their detailed behavior to be measured. This will allow the creation of new types of two-dimensional materials whose properties can be tuned into useful regimes that have never before been accessible (including, for example, their optical, electronic, and magnetic behavior). Such materials are expected to be useful in future electronic devices and also for creating new surface coatings with highly desirable properties. Graduate students, undergraduates, and postdoctoral researchers will be engaged at every level of this research, and will obtain training in state-of-the-art nanostructure fabrication and microscopy techniques. High school students will be offered internships in this program to promote recruitment into the sciences.

*技术摘要*这个项目的目的是制造低维界面结构，使之能够创造新类型的物质和观察新的纳米级现象。这种现象包括低维环境中原子、分子和纳米晶体之间的相互作用，这些环境由石墨烯和氮化硼(BN)的2D层之间的界面定义。该计划将采用最新开发的操纵单层石墨烯和BN的技术，以制造低维界面结构，并使用扫描隧道显微镜和透射电子显微镜技术对其进行表征。界面结构将用通过真空沉积和溶剂型旋涂技术沉积的原子、分子和纳米晶体元素的组合来装饰。这些结构将允许在纳米尺度上探索全新的跨膜化学键和可调电磁行为。研究生、本科生和博士后研究人员将参与这项研究的各个层面，并将获得最先进的纳米制造和显微技术方面的培训。高中生将在这个项目中获得实习机会，以促进科学领域的招聘。*非技术摘要*本项目旨在描述通过在石墨烯和氮化硼(BN)的二维层之间捕获原子和纳米颗粒而形成的新型微观结构。由于石墨烯和BN层只能制造一个原子厚度，这些膜两边的粒子将相互作用强烈，从而以前所未有的方式改变它们的整体性质。不同类型的高分辨率电子显微镜可以看到被困在这种膜之间的界面上的颗粒，从而可以测量它们的详细行为。这将允许创造新类型的二维材料，其特性可以调整到以前从未达到的有用状态(例如，包括它们的光学、电子和磁性行为)。这种材料有望用于未来的电子设备，并用于创造具有非常理想的性能的新的表面涂层。研究生、本科生和博士后研究人员将参与这项研究的各个层面，并将获得最先进的纳米结构制造和显微技术方面的培训。高中生将在这个项目中获得实习机会，以促进理工科的招聘。