MRI: Development of a 100 kHz, Ultrafast Interfacial-Specific Two-Dimensional Vibrational Spectromicroscope

MRI：开发 100 kHz、超快界面特定二维振动光谱显微镜

• 批准号: 1828666
• 负责人: Wei Xiong
• 金额: $ 42.84万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1828666&HistoricalAwards=false
• 关键词: MRI; Development; 100; kHz; Ultrafast

This award is supported by the Major Research Instrumentation (MRI) and the Chemistry Research Instrumentation (CRIF) Programs. Professor Wei Xiong from University of California San Diego and colleagues Vicki Grassian, Neal Devaraj and Ping Liu have developed an ultrafast, one-dimensional/two-dimensional sum frequency generation (1D/2D SFG) spectromicroscope. The microscope employs a laser to probe a sample. This produces a signal (or image) observed by the microscope. The spectral image provides information on the physical and chemical properties of the sample. It is used to probe interfaces, for example, the surface of aerosol particles. Another use is to study the structure of water in confined spaces such as in water purification materials. It is used to pinpoint domains where ice nucleation occurs. Development of artificial retinas and wearable solar cells are applications which can benefit from this instrument. Investigation of these and other processes leads to a better understanding of how to improve them or ameliorate undue consequences. Graduate students are involved with development and application of the instrument, receiving training in an important skill sought by commercial instrument firms. The instrument is used in a variety of investigations. Water purification materials are being studied. The electrochemical interface of energy storage devices (for example, lithium batteries) is being explored. Aerosols surfaces are receiving attention to understand formation mechanisms. Materials which have heterogeneous surfaces are better understood using the microscope, for example biological fibrils. It is being used to study artificial cells and neural networks. Investigators at the University of California, Irvine and Spelman College have projects using the instrument.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项由主要研究仪器（MRI）和化学研究仪器（CRIF）计划支持。 来自加州圣地亚哥大学的Wei Xiong教授及其同事Vicki Grassian，Neal Devaraj和Ping Liu开发了一种超快，一维/二维和频产生（1D/2D SFG）光谱显微镜。 显微镜用激光探测样品。这产生了显微镜观察到的信号（或图像）。光谱图像提供关于样品的物理和化学性质的信息。 它用于探测界面，例如气溶胶颗粒的表面。另一个用途是研究水在有限空间中的结构，例如在水净化材料中。 它用于精确定位冰核发生的区域。人造视网膜和可穿戴太阳能电池的开发是可以从该仪器中受益的应用。对这些过程和其他过程的调查有助于更好地了解如何改善这些过程或减轻不应有的后果。研究生参与仪器的开发和应用，接受商业仪器公司寻求的重要技能培训。该仪器用于各种调查。 水净化材料正在研究中。 正在探索能量存储装置（例如锂电池）的电化学界面。气溶胶表面正在受到关注，以了解形成机制。 使用显微镜可以更好地理解具有异质表面的材料，例如生物原纤维。 它被用于研究人工细胞和神经网络。 加州大学欧文分校和斯佩尔曼学院的研究人员都有使用该仪器的项目。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估来支持。

项目成果

Spatially dependent H-bond dynamics at interfaces of water/biomimetic self-assembled lattice materials

• DOI: 10.1073/pnas.2001861117
• 发表时间: 2020-09
• 期刊: Proceedings of the National Academy of Sciences
• 作者: Haoyuan Wang;Jackson C. Wagner;Wenfan Chen;Chenglai Wang;Wei Xiong

Vibrational Sum-Frequency Generation Hyperspectral Microscopy for Molecular Self-Assembled Systems

用于分子自组装系统的振动和频发生高光谱显微镜

• DOI: 10.1146/annurev-physchem-090519-050510
• 发表时间: 2021
• 期刊: Annual Review of Physical Chemistry
• 影响因子: 14.7
• 作者: Wang, Haoyuan;Xiong, Wei
• 通讯作者: Xiong, Wei

Water Capture Mechanisms at Zeolitic Imidazolate Framework Interfaces

• DOI: 10.1021/jacs.1c09097
• 发表时间: 2021-12-08
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Wagner, Jackson C.;Hunter, Kelly M.;Xiong, Wei
• 通讯作者: Xiong, Wei