Functional, Atomically-Defined Nanowires and Nanoribbons of Silicon

功能性、原子定义的纳米线和硅纳米带

• 批准号: 1404922
• 负责人: Colin Nuckolls
• 金额: $ 81.71万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1404922&HistoricalAwards=false
• 关键词: Functional; Atomically; Defined; Nanowires; Nanoribbons

Colin Nuckolls, James Leighton and Latha Venkataraman, all of Columbia University, are funded by the Macromolecular, Supramolecular and Nanochemistry program in the Division of Chemistry for research to develop methods to design, create, and study single molecule chains and ribbons of silicon atoms. Pure silicon is, of course, widely used in the electronics and information technology industry and is highly valued for its properties as a semiconductor. Its semiconductor nature is the result of molecular and electronic properties that arise at the atomic level. Changes in silicon's electrical properties have been noted as the size of silicon-based devices, such as computer chips and information storage media, become smaller. The investigators are using precise molecular construction techniques to create highly electrically conductive forms of silicon with specific shapes and properties that have never before been studied. In particular, they are looking at tiny ribbons and wires of silicon that hold promise for the development of future electronic devices. This collaborative project is making an explicit connection between the properties of bulk silicon, the bedrock of information technology, and molecular forms of silicon, and is, thus, having a broad impact on the semiconductor industry. This project is having a further broad impact through a coordinated effort that spans K-8 outreach, curriculum development, and research training for undergraduate, graduate, and post-doctoral scientists.The investigators are creating and studying atomically precise nanowires and nanoribbons of silicon that have been functionalized so they can be studied in unimolecular electrical devices. The design and synthesis of rigid, strained, and functional nanowires and nanoribbons of silicon is being used to test the impact of strain on single molecule conductance. Nanoscopic probes developed in this project are allowing the assembly and integration of these new nanomaterials into electrical devices. The combination of expertise among team members working in concert is allowing advanced molecules to be designed, synthesized, and studied in a feedback loop. This approach to research fosters a holistic understanding of these unique one-dimensional chains of silicon atoms and enhances the probability that new properties and devices will be discovered.

哥伦比亚大学的Colin Nuckolls、James Leighton和Latha Venkataraman都是由化学系的高分子、超分子和纳米化学项目资助的，他们的研究旨在开发设计、创建和研究硅原子的单分子链和带的方法。当然，纯硅被广泛应用于电子和信息技术行业，并因其作为半导体的特性而受到高度重视。它的半导体性质是原子水平上产生的分子和电子性质的结果。人们注意到，随着计算机芯片和信息存储介质等硅基设备的尺寸变得更小，硅的电学特性发生了变化。研究人员正在使用精确的分子结构技术来创造具有特殊形状和特性的高度导电性的硅，这是以前从未研究过的。特别是，他们正在寻找微小的硅带和硅线，这些硅线为未来电子设备的发展带来了希望。这个合作项目正在信息技术的基石--体硅的性质和硅的分子形式之间建立明确的联系，并因此对半导体行业产生广泛的影响。这个项目正在通过一项跨越K-8推广、课程开发以及对本科生、研究生和博士后科学家的研究培训的协调努力，产生进一步的广泛影响。研究人员正在创造和研究原子精密的硅纳米线和纳米带，这些纳米线和纳米带已经功能化，可以在单分子电子设备中进行研究。设计和合成刚性的、应变的和功能的硅纳米线和纳米带正被用来测试应变对单分子电导的影响。在该项目中开发的纳米探针允许将这些新的纳米材料组装和集成到电子设备中。团队成员的专业知识结合在一起，使得先进的分子可以在反馈循环中设计、合成和研究。这种研究方法促进了对这些独特的一维硅原子链的整体理解，并增加了发现新特性和新器件的可能性。