MRI: Development of Nanoscale Probes for Enhanced Vibrational Spectroscopy

MRI：增强振动光谱纳米级探针的开发

• 批准号: 0421108
• 负责人: Peter Nordlander
• 金额: --
• 依托单位: William Marsh Rice University
• 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: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0421108&HistoricalAwards=false
• 关键词: MRI; Development; Nanoscale; Probes; Enhanced

AbstractThe objective of this research is the development of a new type of a scanning local probe microscope capable of obtaining chemical information with nanoscale resolution and to utilize this microscope in a wide range of applications pursued by different research groups at Rice University. The microscope will consist of a metallodielectric nanoparticle mounted or integrated as an Atomic Force Microscope tip (AFM) tip. The nanoparticle will be designed to have plasmon resonant response in the infrared region of the spectrum (2.7 -10 microns in wavelength; 1000-3600 cm-1). The strong electromagnetic field enhancements associated with the excitations of plasmons in the probe tip will dramatically enhance the cross sections for infrared excitation of dipole active vibrational modes in the tip-sample junction This project will result in a new and unique nanoscale spectroscopic tool that will be useful across a very broad range of technical applications, such as fundamental nanoscale studies in the physical and chemical sciences, a valuable new imaging probe in the life sciences, and a unique, breakthrough sensor technology for environmental analysis and detection of trace chemical species. The highly collaborative multidisciplinary instrument development team consists of researchers in the departments of Electrical and Computer Engineering, Chemistry, Physics, and Bioengineering. Two courses will be developed during this project addressing the theoretical and experimental aspects of nanoscale instrument component design and fabrication. A large number of users for this instrument have been identified within the Rice science and enginee

摘要本研究的目的是开发一种新型的扫描局部探针显微镜，能够获得纳米级分辨率的化学信息，并利用这种显微镜在广泛的应用所追求的不同研究小组在赖斯大学。该显微镜将由安装或集成为原子力显微镜针尖（AFM）的金属介电纳米粒子。纳米颗粒将被设计为在光谱的红外区域（波长为2.7 - 10微米; 1000-3600 cm-1）中具有等离子体共振响应。与探针尖端中等离子体激元的激发相关的强电磁场增强将显著增强尖端-样品结中偶极主动振动模式的红外激发的横截面。该项目将产生一种新的独特的纳米级光谱工具，该工具将在非常广泛的技术应用中有用，例如物理和化学科学中的基础纳米级研究，这是生命科学中一种有价值的新型成像探针，也是一种独特的、突破性的传感器技术，用于环境分析和痕量化学物质的检测。高度协作的多学科仪器开发团队由电气和计算机工程，化学，物理和生物工程部门的研究人员组成。 两个课程将在这个项目中开发解决纳米仪器组件的设计和制造的理论和实验方面。在水稻科学和工程领域内，已经确定了大量使用该仪器的用户。