Scan head for spectroscopic NSOM system

光谱 NSOM 系统扫描头

基本信息

批准号：
375925-2009
负责人：
Schriemer, Henry
金额：
$ 8.12万
依托单位：
University of Ottawa
依托单位国家：
加拿大
项目类别：
Research Tools and Instruments - Category 1 (<$150,000)
财政年份：
2008
资助国家：
加拿大
起止时间：
2008-01-01 至 2009-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=412266
关键词：
Scan head spectroscopic NSOM system

项目摘要

Nanotechnology begins to realize its promise when engineered complex systems are built on length scales less than one-thousandth the diameter of a human hair. A cost-effective means of seeing how such new structures behave, and verifying that they have been built as designed, uses an ultra-fine needle vibrating extremely close to the structure. This needle "reads" the local surface through both touch and sight - sensing minute changes in force, and transforming light otherwise "stuck" close to the surface into that which travels freely. The careful introduction of "pump" light into systems at just the right spot can cause the sample to give off light with a particular blend of colours, or to change the "feel" of other nanostructures. At the University of Ottawa, we have been constructing an advanced nanosystems characterization facility to understand and validate the performance of record high efficiency solar cells, miniature lasers, and exotic sensor arrays. The desired equipment completes the staged construction of a quarter-million-dollar facility and renders it operational. The requested scan head assembly and nanoaligner will be integrated with the previously purchased components: the scan head control system, confocal optical microscope and ultra-low-light-level-detection spectrometer. Optical pump light is acquired from an existing high-power, broadband tunable dye laser in a shared-use facility.

当工程化的复杂系统建立在小于人类头发直径千分之一的长度尺度上时，纳米技术开始实现其承诺。一种经济有效的方法是使用超细针在非常靠近结构的地方振动，以了解此类新结构的行为方式并验证它们是否按照设计建造。这种针通过触觉和视觉来“读取”局部表面——感知力的微小变化，并将原本“粘”在表面附近的光转变为自由传播的光。将“泵浦”光小心地引入系统的正确位置，可以使样品发出具有特定颜色混合的光，或改变其他纳米结构的“感觉”。在渥太华大学，我们一直在建造先进的纳米系统表征设施，以了解和验证创纪录的高效太阳能电池、微型激光器和奇异传感器阵列的性能。所需的设备完成了耗资 25 万美元的设施的分阶段建设并使其投入运行。所需的扫描头组件和纳米对准器将与之前购买的组件集成：扫描头控制系统、共焦光学显微镜和超低光水平检测光谱仪。光泵浦光是从共享设施中现有的高功率、宽带可调谐染料激光器获取的。