Collaborative Research: Measurements and Implications of Graphene Adhesion - A Coherent Study via Experiments and Modeling

合作研究：石墨烯粘附力的测量和影响 - 通过实验和建模进行的连贯研究

• 批准号: 1129826
• 负责人: Teng Li
• 金额: $ 21.82万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1129826&HistoricalAwards=false
• 关键词: Collaborative; Research; Measurements; Implications; Graphene

This grant provides funding for characterizing and manipulating the adhesive properties of graphene, a single layer of carbon atoms densely packed into a honeycomb lattice that have been shown to have extraordinary mechanical, optical, thermal and electronic properties. Adhesion dictates graphene morphology on surrounding materials, which is in turn closely tied to the electronic and mechanical properties of the graphene. However, the adhesive properties of graphene are largely unexplored, partly because the traditional metrologies of adhesion become unsuitable when dealing with samples of extremely small dimensions. This project bypasses previous limitations by extracting adhesive properties directly from the morphology of graphene placed on patterned substrate surfaces and nano-scale scaffolds. A metrology will be developed to measure the adhesion between graphene and a wide-range of materials, particularly using morphological changes on non-flat substrates. The material, morphological, and environmental factors that influence graphene adhesion to surfaces will be determined. Methods will be developed to manipulate the mechanical properties of graphene using surface structures. Results will be achieved through a research framework that integrates experiments (e.g., atomic force microscopy, electronic transport, Raman spectroscopy) and theory (e.g., multi-scale theoretical and numerical modeling). There is currently great interest in exploring applications for graphene in next-generation electronics and advanced composite materials. Adhesion plays a pivotal role in the interplay between graphene and other materials, so is a key to the success of future graphene devices and applications. If successful, this project will contribute to an understanding of the interplay between graphene adhesion and morphology which could also have implications for other graphene properties. The energetic framework and experimental protocols developed in this project can be readily adapted to other ultrathin films, and thus have the potential to impact metrology techniques for a wide range of other functional materials.

该赠款提供了表征和操纵石墨烯的粘合特性的资金，石墨烯的粘合剂特性，这是一层碳原子密集地包装到蜂窝状晶状体中的碳原子，这些碳原子已被证明具有非凡的机械，光学，光学，热和电子特性。粘附决定了周围材料上的石墨烯形态，这又与石墨烯的电子和机械性能紧密相关。但是，石墨烯的粘合性能在很大程度上没有探索，部分原因是，在处理极小尺寸的样品时，粘附的传统计量学变得不合适。该项目通过直接从位于图案化底物表面和纳米尺度支架上的石墨烯的形态中提取粘合性特性来绕过以前的限制。将开发一个计量学来测量石墨烯与大范围材料之间的粘附，尤其是使用非平​​板底物的形态变化。将确定影响石墨烯粘附在表面的材料，形态和环境因素。将开发使用表面结构来操纵石墨烯的机械性能的方法。结果将通过整合实验（例如原子力显微镜，电子传输，拉曼光谱）和理论（例如多尺度理论和数值建模）的研究框架来实现。目前，人们对在下一代电子和高级复合材料中探索石墨烯的应用非常感兴趣。粘附在石墨烯与其他材料之间的相互作用中起关键作用，因此，将来的石墨烯设备和应用成功的关键也是如此。如果成功，该项目将有助于理解石墨烯粘附和形态之间的相互作用，这也可能对其他石墨烯特性有影响。该项目中开发的充满活力的框架和实验方案可以很容易地适应其他超薄膜，因此有可能影响各种其他功能材料的计量技术。