Controlling, modulating, and monitoring the electronic and mechanical properties of molecular junction devices at single-molecule level

在单分子水平上控制、调节和监测分子连接器件的电子和机械性能

• 批准号: 0823849
• 负责人: Bingqian Xu
• 金额: $ 23.98万
• 依托单位: University of Georgia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0823849&HistoricalAwards=false
• 关键词: Controlling; modulating; monitoring; electronic; mechanical

The objective of this proposal is to develop and use highly integrated multi-functional system based on the SPM break junction methods the PI recently developed to precisely and controllably tune the molecular properties of the molecule junctions while educate students about the interplay of physics, chemistry and engineering at the nanometer scale. Intellectual Merit: Investigation of the electron transport in single molecules connected to electrodes with different contact combinations opens the doors to new insights into the factors that influence the conductance in the single molecules. We expect that this will lead to a better understanding of electron transport phenomenon in such systems. Because single molecules, even in complex environments, are amenable to first-principles modeling, they open a door to direct, quantitative testing of the theories. By enabling the precisely controlled tuning of molecular properties of the molecule junctions, this work will also lead from single molecule science to practical single molecule devices. Broader Impact: The project promotes outreach and educational activities through the involvement of graduate, undergraduate students and high school students in the classes and the PI's research laboratory. Taking the interdisciplinary nature of the research, it's fit not only to a very broad crop of students in various areas but also to women and underrepresented minority students. The PI will recruit 1-2 minority undergraduate students through PI's active participation in the well-developed outreach network of the University of Georgia's Faculty of Engineering, Louis Stokes Alliance for Minority Participation (LSAMP), and Nanoscale Science and Engineering Center.

该提案的目的是开发和使用基于PI最近开发的SPM断开结方法的高度集成的多功能系统，以精确和可控地调整分子结的分子特性，同时教育学生关于纳米尺度的物理，化学和工程的相互作用。智力优势：在连接到具有不同接触组合的电极的单分子中的电子传输的调查打开了大门，以新的见解的因素，影响在单分子中的电导。我们期望这将导致更好地理解在这样的系统中的电子输运现象。因为单分子，即使在复杂的环境中，也可以服从第一原理模型，它们为理论的直接定量测试打开了一扇大门。通过实现分子结的分子性质的精确控制调谐，这项工作也将从单分子科学走向实用的单分子器件。更广泛的影响：该项目通过让研究生、本科生和高中生参与课堂和PI的研究实验室，促进外联和教育活动。考虑到研究的跨学科性质，它不仅适合各个领域的广泛学生，也适合女性和代表性不足的少数民族学生。PI将通过PI积极参与格鲁吉亚大学工程学院、路易斯·斯托克斯少数民族参与联盟（LSAMP）和纳米科学与工程中心的完善的外联网络，招募1-2名少数民族本科生。