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.

该提案的目标是开发和使用基于 PI 最近开发的 SPM 断裂连接方法的高度集成的多功能系统，以精确、可控地调整分子连接的分子特性，同时教育学生了解物理、化学和化学之间的相互作用。纳米级工程。智力优点：对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研究为了解影响单分子电导的因素打开了新的大门。我们期望这将有助于更好地理解此类系统中的电子传输现象。由于单分子即使在复杂的环境中也适合第一原理建模，因此它们为直接、定量的理论测试打开了大门。通过精确控制分子连接的分子特性，这项工作也将从单分子科学引向实用的单分子器件。更广泛的影响：该项目通过研究生、本科生和高中生参与课堂和 PI 研究实验室来促进外展和教育活动。鉴于这项研究的跨学科性质，它不仅适合各个领域的广大学生，也适合女性和代表性不足的少数族裔学生。 PI将通过PI积极参与佐治亚大学工程学院、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等完善的外展网络，招收1-2名少数民族本科生。