Graphene-SiC Interface: Effect of Atomic Bonding Type on Thermal Transport

石墨烯-SiC 界面：原子键合类型对热传输的影响

• 批准号: 1235852
• 负责人: Xinwei Wang
• 金额: $ 25万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1235852&HistoricalAwards=false
• 关键词: Graphene; SiC; Interface; Effect; Atomic

CBET - 1235852 PI: Xinwei Wang, Iowa State UniversityIn this project, a novel technology based on steady-state joule heating and simultaneous Raman spectroscopy will be developed to measure and distinguish the temperature between graphene and its substrate. This technology enables nanometer resolution in the out-of-plane direction for thermal mapping. Systematic knowledge will be built about thermal transport between graphene and SiC, and how this interface thermal resistance is affected by two typical interfaces: interface featuring Van der Waal force and interface with covalent bond. Atomistic modeling will be conducted to evaluate the graphene-interface thermal resistance and complement the experimental data to provide a cross-benchmarked and complemented in-depth and full-spectrum picture of the thermal transport at graphene-SiC interface. For thermal design in graphene-based devices and systems, this project will establish an important quantitative knowledge base about the interface thermal resistance sustained by Van der Waals and covalent bonds. Broader impacts. The results of the research will be integrated into existing and new courses at Iowa State University. Undergraduate participation in summer research will be facilitated through the PERUSE program at ISU. Outreach to K-12 students is included, and will involve supervision of independent study projects by top students from local high schools.

CBET - 1235852 PI：Xinwei Wang，爱荷华州立大学在该项目中，将开发一种基于稳态焦耳加热和同步拉曼光谱的新技术来测量和区分石墨烯及其基材之间的温度。该技术能够在面外方向实现纳米分辨率的热测绘。将建立关于石墨烯和碳化硅之间的热传输的系统知识，以及该界面热阻如何受到两个典型界面的影响：具有范德华力的界面和具有共价键的界面。将进行原子建模来评估石墨烯-界面热阻并补充实验数据，以提供石墨烯-SiC界面热传输的交叉基准和补充的深入和全谱图。对于基于石墨烯的器件和系统的热设计，该项目将建立一个关于范德华和共价键维持的界面热阻的重要定量知识库。更广泛的影响。研究结果将被纳入爱荷华州立大学现有的和新的课程中。 ISU 的 PERUSE 项目将促进本科生参与夏季研究。其中包括对 K-12 学生的外展活动，并将涉及由当地高中的优秀学生对独立学习项目的监督。