2D Acousto-Optical Spectrometer

二维声光光谱仪

• 批准号: RTI-2017-00623
• 负责人: Kaake, Loren
• 金额: $ 10.82万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616727
• 关键词: 2D; Acousto; Optical; Spectrometer

The power of chemical synthesis is only fully harnessed when reaction products are well characterized. In synthetic organic chemistry, multidimensional NMR is an exquisitely capable tool for determining the chemical structure of molecules in solution. However, in solids and thin films, an analogous technique for the determination of solid state nanostructure does not exist. Instead, the nanoscale structures critical in determining material properties are analyzed incompletely using a battery of time consuming techniques. Therefore, a dire need for innovative characterization tools exists within the field of materials chemistry. Medial ultrasound imaging uses acoustic vibrations of 1-100 MHz to image tissues, with higher frequency allowing for improved resolution. The acoustic resonances of nanostructured materials are known to occur around 10-100 GHz and are often measured through their effects on UV-Vis absorption spectra. The acoustic properties of nanostructured materials are also sensitive to the strength of intermolecular forces and other weak to moderately strong interactions which give rise to self-assembly. These interactions are extremely important to the targeted design of solid-state structure, but are difficult to characterize directly. We request funds to construct a 2D Acousto-Optical spectrometer from commercially available components. The instrument will comprise a sensitive UV-Vis spectrometer and a laser capable of selecting and exciting acoustic vibrational modes between 7-1100 GHz. It will deliver 2D spectra as a function of both optical and acoustic frequencies, providing a high-throughput technique sensitive to material nanostructure and intermolecular forces. The insights provided by this instrument will inform chemical synthesis in an unprecedented way and deliver an important competitive advantage to Canada.

化学合成的力量只有在反应产物得到充分表征时才能得到充分利用。在合成有机化学中，多维核磁共振是测定溶液中分子化学结构的一种非常有效的工具。然而，在固体和薄膜中，没有类似的技术来测定固态纳米结构。相反，决定材料性能的关键纳米级结构是使用一系列耗时的技术不完全分析的。因此，材料化学领域迫切需要创新的表征工具。