Development and Acquisition of Surface Sensitive Electrochemical Instrumentation using Evanescent Wave and Nonlinear-Optical Techniques for Research and Education

使用倏逝波和非线性光学技术开发和获取用于研究和教育的表面敏感电化学仪器

• 批准号: 0315565
• 负责人: Rigoberto Advincula
• 金额: $ 43.2万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315565&HistoricalAwards=false
• 关键词: Development; Acquisition; Surface; Sensitive; Electrochemical

This grant supports the development and acquisition of surface sensitive electrochemical instrumentation using evanescent wave and nonlinear-optical techniques for research and education at the University of Houston. The development of new surface sensitive spectroscopic and microscopic electrochemical instrumentation will be accomplished by simultaneously: 1) combining scanning probe microscopy (SPM) and surface plasmon spectroscopy (SPS) with electrochemical methods, and 2) combining sum-frequency generation (SFG) and scanning near-field optical microscopy (SNOM) with electrochemical methods. These two unique systems will give in-situ linear and nonlinear optical and spectroscopic information in electrochemical phenomena simultaneous with morphological and nanoscale imaging from atomic force microscopy (AFM) and SNOM. These instruments will impact the study of electrode/electrolyte interfaces and the synthesis and investigation of materials by electrochemical methods. A focus is on applying the two instruments and methods on established electrochemical investigative methods, e.g. cyclic voltammetry, potentiostatic, amperometric experiments, etc. By simultaneously coupling optical evanescent spectroscopies and scanning probe microscopies, unique characterization of temporal and spatial properties at each stage of an electrochemical cycle can be accomplished. This will also advance the state of the art in nanometer-scale measurement and analysis especially with increasing SPM resolution methods. By conducting SFG on surfaces simultaneous with the electrochemistry experiment, orientational and tensor parameters of molecules directly at the solid-liquid interface can be determined. All these studies are likewise applicable to nanoscale materials at the interface, e.g. nanoparticles, nanolithographic patterns, and nanoscale hybrid materials systems. These two complementary capabilities will create a unique optical, electrochemical, and SPM system with wide applications in interface electrochemistry.The University of Houston has a strong materials research program and faculty that will greatly benefit from these instruments. These instruments will be transitioned to the broader scientific community after development and optimization. This will be done through various collaborations with university, government, and industrial research centers of excellence. Two graduate students experienced in instrumentation development and an undergraduate will participate in configuring and developing the new instruments at various stages. They will greatly benefit from the unique research and education opportunities these instruments will provide. They will also serve as expert trainers in disseminating the use of the instrumentation to other students and collaborators.

该补助金支持开发和收购表面敏感电化学仪器，使用倏逝波和非线性光学技术，用于休斯顿大学的研究和教育。 将扫描探针显微镜（SPM）和表面等离子体光谱（SPS）与电化学方法相结合，将和频发生（SFG）和扫描近场光学显微镜（SNOM）与电化学方法相结合，将同时实现新型表面灵敏光谱和显微电化学仪器的开发。 这两个独特的系统将提供原位线性和非线性光学和光谱信息的电化学现象，同时从原子力显微镜（AFM）和SNOM的形态和纳米级成像。 这些仪器将影响电极/电解质界面的研究以及通过电化学方法合成和研究材料。一个重点是应用这两种仪器和方法上建立的电化学调查方法，例如循环伏安法，恒电位，电流实验等，通过同时耦合光学倏逝光谱和扫描探针显微镜，独特的表征的时间和空间特性在每个阶段的电化学循环可以完成。这也将推进纳米级测量和分析的最新技术，特别是随着SPM分辨率方法的增加。通过在电化学实验的同时在表面上进行SFG，可以直接确定固液界面处分子的取向和张量参数。所有这些研究同样适用于界面处的纳米级材料，例如纳米颗粒、纳米光刻图案和纳米级混合材料系统。这两个互补的能力将创造一个独特的光学，电化学和SPM系统与界面电化学的广泛应用。休斯顿大学有一个强大的材料研究计划和教师，将大大受益于这些仪器。这些仪器将在开发和优化后过渡到更广泛的科学界。这将通过与大学、政府和工业研究中心的各种合作来实现。两名在仪器开发方面经验丰富的研究生和一名本科生将参与配置和开发各个阶段的新仪器。他们将大大受益于这些工具将提供的独特的研究和教育机会。他们还将担任专家培训员，向其他学生和合作者传播仪器的使用。