Microscopy of Hierarchical 2-D Interface Structures

* 技术摘要 * 本项目的目的是制造低维界面结构，使新类型的物质的创造和新的纳米级现象的观察成为可能。 这种现象包括在由石墨烯和氮化硼（BN）的2D层之间的界面限定的低维环境中的原子、分子和纳米晶体之间的相互作用。 该计划将采用新开发的技术来操纵单层石墨烯和BN，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。 界面结构将通过真空沉积和基于溶剂的旋涂技术沉积的原子、分子和纳米元素的组合来装饰。 这些结构将允许在纳米尺度上探索全新的跨膜化学键合和可调电磁行为。 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纤维和显微镜技术的培训。 高中生将在这个计划提供实习，以促进招聘到科学。非技术摘要 * 该项目旨在表征通过在石墨烯和氮化硼（BN）的二维层之间捕获原子和纳米尺寸颗粒而制成的新型微观结构。 由于石墨烯和BN层只能制成一个原子厚，因此这些膜两侧的颗粒将彼此强烈相互作用，从而以以前未观察到的方式改变它们的整体性质。 在这种膜之间的界面处捕获的颗粒将被不同类型的高分辨率电子显微镜观察到，从而可以测量它们的详细行为。 这将允许创建新类型的二维材料，其属性可以调整到以前从未访问过的有用机制（包括例如，它们的光学，电子和磁性行为）。 预期此类材料可用于未来的电子装置中，并且还可用于产生具有高度期望的性质的新表面涂层。 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的培训。 高中生将在这个项目中提供实习机会，以促进科学领域的招聘。

****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.