Studying single ions and molecules with atomic-scale wires and gaps

研究具有原子级导线和间隙的单个离子和分子

• 批准号: 0243423
• 负责人: Nongjian Tao
• 金额: $ 34.5万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-04-01 至 2008-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0243423&HistoricalAwards=false
• 关键词: Studying; single; ions; molecules; atomic

Professor Nongjian Tao of Arizona State University is supported by the Analytical and Surface Chemistry Program to fabricate atomic-scale metal wires with quantized conductance. Metal is deposited or etched electrochemically. Electrochemical processes such as charge transport and adsorbate effects are studied. This project focuses on relatively simple ions and redox molecules in electrolyes and their interaction with the nanowires. Single ions and molecules are detected via tunneling currents as they trap in or escape from a molecular-scale gap. The project relates to the goals of miniaturizing electronics to molecular-size scale. Students enjoy interdisciplinary training in electrochemistry and nanofabrication skills and benefit from close collaboration with Motorola. The fabrication method from this lab has found applications in a number of labs around the world, making reliable single molecule measurements more available for development. Studies on solvation and ions are required to understand the characteristics of the nanowires in complex environments such as analytic samples and single biological cells.

亚利桑那州立大学的陶农建教授得到了分析和表面化学计划的支持，该计划旨在制造具有量子化电导的原子尺度金属导线。金属是用电化学方法沉积或蚀刻的。研究了电荷传输和吸附效应等电化学过程。这个项目主要关注电解液中相对简单的离子和氧化还原分子以及它们与纳米线的相互作用。单个离子和分子在捕获或逃脱分子尺度的间隙时，通过隧道电流被探测到。该项目涉及将电子产品微型化到分子大小的目标。学生享受电化学和纳米制造技能的跨学科培训，并从与摩托罗拉的密切合作中受益。这个实验室的制造方法已经在世界各地的许多实验室得到了应用，使可靠的单分子测量更容易用于开发。为了了解纳米线在复杂环境中的特性，如分析样品和单个生物细胞，需要对溶剂化和离子进行研究。