Graphene Heteromaterials

石墨烯异质材料

• 批准号: 1204924
• 负责人: Matthias Batzill
• 金额: $ 36万
• 依托单位: University of South Florida
• 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: 2012-05-01 至 2017-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1204924&HistoricalAwards=false
• 关键词: Graphene; Heteromaterials

Technical Description: Two-dimensional nanomaterials have potential for novel electronics. However the materials science of fabricating and merging of different two-dimensional (2D) nanomaterials into a device has not yet been established. This project aims at understanding fundamental materials science problems of 2D-nanomaterial interfaces using atomic-scale surface science characterization techniques. The research consists of three thrust areas: (i) Investigation and tuning of metal- graphene interfaces: Electrical contacts with graphene are important for any device. New strategies are devised on how to disperse metal-atoms on the surface of graphene by utilizing two-dimensional metal-organic frameworks supported on graphene. (ii) Developing methods for synthesizing heterostructures of 2D materials and characterizing their properties: To achieve heterolayers of hexagonal boron nitride (h-BN) on graphene on a wafer-sized scale vapor growth of h-BN on a metal support is combined with graphene formation by carbon segregation from the metal bulk. (iii) Synthesizing and characterizing novel 2D man-made nanomaterials with no structural analogy in bulk materials: Most 2D nanomaterials are based on van-der-Waals bulk materials that can be exfoliated into individual atomic (molecular) sheets. In this project the possibility of synthesizing entirely new materials that do not have any bulk counterparts is explored.Non-technical Description: This project addresses fundamental materials science issues of graphene and related two-dimensional materials. Growth of various two-dimensional materials and characterization their interfaces are carried out using surface science techniques. Research results from this project will be included in the curriculum of courses on Materials Physics/Surface Science and Solid State Physics taught by the PI. In addition, this project offers graduate projects for two PhD students and research experience for undergraduate students. It also facilitates the continuation of a recently implemented cooperation between researchers at the University of South Florida and the Center for Functional Nanomaterials at the Brookhaven National Laboratory.

技术描述：二维纳米材料具有新型电子学的潜力。然而，将不同的二维（2D）纳米材料制造和合并到一个设备中的材料科学尚未建立。该项目旨在利用原子尺度的表面科学表征技术来理解2D纳米材料界面的基本材料科学问题。该研究包括三个主要领域：（i）金属-石墨烯界面的研究和调整：与石墨烯的电接触对于任何设备都很重要。利用石墨烯负载的二维金属有机骨架，设计了在石墨烯表面分散金属原子的新策略。(ii)开发用于合成2D材料的异质结构并表征其性质的方法：为了在晶片尺寸级上实现石墨烯上的六方氮化硼（h-BN）的异质层，将h-BN在金属支撑物上的气相生长与通过碳从金属块体中分离的石墨烯形成相结合。(iii)合成和表征新型2D人造纳米材料，在块体材料中没有结构相似性：大多数2D纳米材料基于范德华块体材料，可以剥离成单个原子（分子）片。本项目探索合成没有任何本体对应物的全新材料的可能性。非技术性说明：本项目解决石墨烯和相关二维材料的基础材料科学问题。各种二维材料的生长和表征他们的界面进行使用表面科学技术。该项目的研究成果将纳入PI教授的材料物理/表面科学和固态物理课程。此外，该项目还为两名博士生提供研究生项目，并为本科生提供研究经验。它还促进了南佛罗里达大学和布鲁克海文国家实验室功能纳米材料中心的研究人员之间最近实施的合作的继续。