Nonlinear Mechanics of Graphene-Based Materials

CMMI？0926851：石墨烯材料的非线性力学PI：黄锐，德克萨斯大学奥斯汀分校摘要：该奖项由《2009年美国复苏和再投资法案》(公法第111-5条)资助。本项目的目标是建立一个基于非线性连续介质力学和原子模型的单层石墨烯的理论框架。在此框架内，我们将系统地研究单层石墨烯及其衍生物的基本力学性质。首先，建立了三维空间中二维薄板在任意变形下的非线性连续介质理论。接下来，将开发原子建模方法来模拟和推导单层石墨烯的基本力学性质。然后将连续介质理论和原子模拟方法相结合，研究碳纳米管和石墨烯纳米带作为石墨烯材料的两种基本形式。最后，我们将研究石墨烯单层与支撑衬底相互作用的集成石墨烯结构。石墨烯具有丰富的特殊物理性质，具有广泛的应用前景，包括石墨烯基复合材料、纳米电子学和机电谐振器。对石墨烯机械性能的研究将补充材料科学和凝聚态物理中本已丰富的研究活动，这些研究活动主要集中在石墨烯的电子性质上。可以预见，对石墨烯材料力学的基本了解将为基础物理和实际应用开辟新的视角。此外，将在拟议项目中纳入教育和外联活动，以加强其社会影响。

CMMI ? 0926851: Nonlinear Mechanics of Graphene-Based MaterialsPI: Rui Huang, University of Texas at AustinAbstract:This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The objective of this project is to develop a theoretical framework for monolayer graphene based on nonlinear continuum mechanics and atomistic modeling. Within the framework, the fundamental mechanical properties of monolayer graphene and its derivatives will be systematically studied. First, a nonlinear continuum theory will be developed for two-dimensional sheets under arbitrary deformation in the three-dimensional space. Next, atomistic modeling approaches will be developed to simulate and deduce the fundamental mechanical properties of monolayer graphene. The continuum theory and atomistic modeling methodology will then be combined to study carbon nanotubes and graphene nanoribbons as two basic forms of graphene-based materials. Finally, integrated graphene structures with graphene monolayers interacting with supporting substrates will be investigated.With a wealth of exceptional physical properties, graphene holds great promises for a variety of applications, including graphene-based composite materials, nanoelectronics and electromechanical resonators. The research on mechanical properties of graphene will complement the already abundant research activities in material science and condensed-matter physics that have largely focused on its electronic properties. It is envisioned that fundamental understanding of the mechanics of graphene-based materials will open new perspectives for both fundamental physics and practical applications. In addition, education and outreach activities will be incorporated within the proposed project to enhance its societal impacts.