EAGER: Mattressene - A 3D Carbon Nanostructure Superlattice: Experimental and Theoretical Synthesis and Characterization

EAGER：Mattressene - 3D 碳纳米结构超晶格：实验和理论合成及表征

• 批准号: 1148936
• 负责人: Krishna Muralidharan
• 金额: $ 15万
• 依托单位: University of Arizona
• 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: 2011-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1148936&HistoricalAwards=false
• 关键词: EAGER; Mattressene; 3D; Carbon; Nanostructure

NON-TECHNICAL DESCRIPTION: The principal objective of this work is the experimental fabrication of a new, technologically important, carbon-based nanostructured material referred to as mattressene. Structurally, mattressene consists of alternating single-layer graphene sheets connected to each other by parallel arrays of carbon nanotubes, and this regular, periodic arrangement of graphene and nanotubes enables mattressene to exhibit remarkable electronic, thermal and mechanical properties, making it applicable as a (i) high-speed, high-density semiconductor chip device, (ii) high-efficiency thermoelectric material capable of converting waste heat to electricity, (iii) thermal interface material for efficient and swift removal of heat in electronic devices and (iv) high-capacity reversible hydrogen storage in hydrogen fuel cells.TECHNICAL DETAILS: The experimental ability to synthesize a new, ordered, carbon-based nano-metamaterial- mattressene is being explored in this project. Mattressene consists of parallel sheets of graphene connected to each other by ordered, parallel arrays of same-length single-walled carbon nanotubes oriented orthogonal to the graphene sheets. The key elements of the chemical synthesis strategy, appropriately informed by high-accuracy density functional theory (DFT) calculations, consists of assembling a layered structure comprised of alternating graphene and functionalized-fullerene layers, followed by chemical attachment between graphene and fullerenes and conversion of the fullerenes to carbon nanotubes via cycloaddition reactions. The building blocks of mattressene consist of graphene and nanotubes, and that in combination with a 3-D periodic arrangement which can be suitably varied by adopting the layer by layer synthesis approach, enables mattressene to exhibit tunable electronic, thermal and thermoelectric properties. This tunability makes mattresene highly desirable and ideally suited for technological applications as semiconducting devices, efficient thermal transport materials and thermoelectric materials. Another significant impact of this project is the rigorous training of a graduate student in a multi-disciplinary environment spanning across many fields of science and engineering as well as allowing the student to get familiarized with advanced, cutting-edge experimental and theoretical research tools and techniques that are adopted in this work. A post-doctoral scholar and several undergraduate students are also engaged in this project.

非技术描述：这项工作的主要目标是实验性制造一种新的，技术上重要的，碳基纳米结构材料被称为mattrescent。在结构上，mattresses由通过碳纳米管的平行阵列彼此连接的交替的单层石墨烯片组成，并且石墨烯和纳米管的这种规则的周期性布置使得mattresses能够表现出显著的电子、热和机械性能，使其可用作（i）高速、高密度半导体芯片器件，（ii）能够将废热转化为电的高效热电材料，（iii）用于有效和快速去除电子设备中的热量的热界面材料，以及（iv）氢燃料电池中的高容量可逆氢存储。该项目正在探索合成一种新的、有序的碳基纳米超材料-martrescent的实验能力。床垫由平行的石墨烯片组成，石墨烯片通过与石墨烯片正交取向的相同长度的单壁碳纳米管的有序平行阵列彼此连接。化学合成策略的关键要素，适当地由高精度密度泛函理论（DFT）计算提供信息，包括组装由交替的石墨烯和官能化富勒烯层组成的层状结构，然后是石墨烯和富勒烯之间的化学连接，以及通过环加成反应将富勒烯转化为碳纳米管。martrescent的构建块由石墨烯和纳米管组成，并且与可以通过采用逐层合成方法适当地改变的3-D周期性排列相结合，使得martrescent能够表现出可调谐的电子、热和热电性质。这种可调谐性使得mattresene非常理想，非常适合作为半导体器件，高效热传输材料和热电材料的技术应用。该项目的另一个重要影响是在跨越许多科学和工程领域的多学科环境中对研究生进行严格的培训，并让学生熟悉这项工作中采用的先进，尖端的实验和理论研究工具和技术。 一名博士后和几名本科生也参与了该项目。