3rd International Workshop on Nanoscale Spectroscopy; College Park, MD

第三届纳米光谱学国际研讨会；

• 批准号: 0439183
• 负责人: Raymond Phaneuf
• 金额: $ 1万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-12-15 至 2005-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0439183&HistoricalAwards=false
• 关键词: 3rd; International; Workshop; Nanoscale; Spectroscopy

Rapid developments in nanotechnology require the creation of tools for spectroscopic measurements at the nanometer scale. Much of nanotechnology is driven by quantum confinement effects that modify bulk properties when the length scale of a nanostructure becomes comparable to wave function spatial extents in the material. To understand the modification of optical and electronic properties requires spectroscopic tools that can make measurements at the resolution of a single nano-structure, typically 1-10 nm. This is far below the wavelength limit of probes using visual light, so many conventional probes must be modified to use near-field approaches or re-invented altogether. The purpose of this workshop is to exchange ideas amongst researchers in the field, with the intention of developing tools that will match the fabrication capabilities now emerging in nano-technology.%%%Materials fabrication at very small size structures results in interesting new properties. Often, properties of a material are modified in useful ways when the particle sizes become so small that only a few hundred or a few thousand atoms are present in a single particle. In that limit, materials properties are an amalgam of those of the bulk material and those of single atom. This gives an opportunity to modify materials properties without fabrication of "new" materials; instead the modification takes place simply by changing the particle size of existing materials. One important challenge is to create measurement techniques that can study material properties that originate from only a single grain of these "nano-structured" materials. This requires changing conventional measurement tools so that the spot size for the measurement is at least one hundred times smaller than in current practice. The purpose of this workshop is to exchange ideas within the research community that is developing such tools.

纳米技术的快速发展需要在纳米尺度上创造光谱测量工具。许多纳米技术是由量子限制效应驱动的，当纳米结构的长度尺度与材料中的波函数空间范围相当时，量子限制效应会改变体特性。为了理解光学和电子特性的变化，需要光谱工具，可以在单个纳米结构的分辨率下进行测量，通常是1-10纳米。这远远低于使用可见光的探针的波长限制，因此许多传统的探针必须修改为使用近场方法或完全重新发明。本次研讨会的目的是在该领域的研究人员之间交流思想，旨在开发与纳米技术中出现的制造能力相匹配的工具。在非常小的尺寸结构上制造材料会产生有趣的新特性。通常情况下，当粒子尺寸变小到只有几百或几千个原子存在于单个粒子中时，材料的性质就会发生有用的改变。在这个极限下，材料的性质是块状材料的性质和单原子的性质的混合。这提供了在不制造“新”材料的情况下修改材料性能的机会；相反，仅仅通过改变现有材料的粒度就可以实现这种改性。一个重要的挑战是创造一种测量技术，可以研究这些“纳米结构”材料的单个颗粒所产生的材料特性。这需要改变传统的测量工具，使测量的光斑尺寸比目前的实践至少小一百倍。本次研讨会的目的是在正在开发此类工具的研究社区内交换意见。