Molecular Interfaces to Heterostructures of Low Dimensional Carbon

技术：掺杂和载流子散射对正在考虑用于电子和传感器应用的材料至关重要。合成和制造降维材料的能力提供了新的平台，利用这些平台可以超越既定的性能限制。当材料是原子厚度时，就像石墨烯和碳纳米管的情况一样，它们也代表了对当地化学环境的敏感度的极限。因此，尽管存在很大的潜力，但实验观察到的特性可以而且经常会被环境改变。该项目由电子和光子材料(EPM)计划以及固态和材料化学(SSMC)计划支持，研究环境环境和界面对低维碳(石墨烯和纳米管)观察到的性质的影响-以区分内在特征并阐明外部因素如何改变它们。对与底物的相互作用的研究也可以导致可以探索机械应变影响的系统。该项目的成功实施有望带来对机械扭曲和Kohn反常效应的新见解，这些效应导致石墨烯和金属碳纳米管中的静态和动态带隙开放。非技术性：该项目解决具有高度技术相关性的材料科学主题领域的基础研究问题。在低维碳/聚合物界面的化学和机械效应方面获得的见解将使柔性电子和透明导体等新兴领域成为可能。对应变晶体界面和机械效应的研究可能会为调整石墨烯和纳米管的能带结构提供可行的途径，为碳基高性能电子产品开辟新的方向。该项目的跨学科性质为研究生和本科生研究人员提供了教育和培训机会，他们将成为未来科学和工程前沿的领导者。该项目的成果还为丰富国际学校及其他机构的课程提供了新的概念和示范材料。

Technical: Doping and carrier scattering are of fundamental importance to materials being considered for electronics and sensor application. The ability to synthesize and fabricate materials of reduced dimensionality has provided new platforms with which established performance limits can be surpassed. When materials are of atomic thickness, as is the case with graphene and carbon nanotubes, they also represent the ultimate limit in terms of sensitivity to the local chemical environment. Hence, while much potential exists, experimentally observed properties can be and often are altered by the environment. This project, supported by the Electronic and Photonic Materials (EPM) Program and Solid State and Materials Chemistry (SSMC) Program, addresses the effects of ambient surrounding and interfaces on the observed properties of low-dimensional carbon (graphene and nanotubes) - to distinguish intrinsic characteristics and to elucidate how extrinsic factors alter them. Studies on interactions with substrates can also lead to systems where the effects of mechanical strain can be explored. Successful implementation of this project is expected to lead to new insights into mechanical distortions and Kohn anomaly effects that lead to static and dynamic band gap opening in graphene and metallic carbon nanotubes.Non-technical: The project addresses basic research issues in a topical area of materials sciences with high technological relevance. Insights gained on chemical and mechanical effects at the low-dimensional carbon/polymer interfaces will enable emerging areas such as flexible electronics and transparent conductors. Studies on strained crystalline interfaces and mechanical effects may lead to accessible routes to tuning the band structure of both graphene and nanotubes opening up new directions in carbon-based high-performance electronics. The interdisciplinary nature of this project provides educational and training opportunities for both graduate and undergraduate researchers who will become the future leaders at the forefront of science and engineering. The results of this project also provide new concepts and demonstration materials for enriching course curricula at the PI's institution and beyond.