The Transport-Model-Independent Description of Membrane Transport: Optical and Thermo-Optical Spectroscopic Experiments and Analysis

摘要提案题目：不依赖于传输模型的膜传输描述：光学和热光学光谱实验与分析提案号：cts -0437621首席研究员：Sankar NairInstitution: GA Tech Res Corp - git反射和光声FTIR光谱将用于探测膜中扩散物质的浓度分布。这项技术补充了该领域现有的实验，因为它提供了关于膜的化学性质和扩散物质的浓度分布的亚微米信息。提出的研究计划包括一个全面的建模组件，主要是关于解释实验数据。开发的软件包有望提供一个有用的可视化工具，通过膜的运输。PI先前已经证明了该技术的优势，并在文献中发表了其原理。将使用单独的TGA实验来确定扩散物质在膜中的溶解度（分配系数）。一旦知道了浓度分布、物种通量和溶解度，就可以将实验数据与简单的输运模型相匹配。该研究为研究流体通过膜的传输提供了一种新的有力方法，有望在分离领域产生更广泛的影响。本研究的新见解和方法将作为受限和纳米尺度环境中输运现象课程的一个模块纳入本科和研究生课程。提案中概述的教育和推广计划是明确和可行的。所提出的评估机制非常重要，代表了提案的优点。许多技术领域将直接受益于这项研究，包括传感器膜、燃料电池膜和膜反应器。

AbstractProposal Title: The Transport-model-independent Description of Membrane Transport: Optical and Thermo-optical Spectroscopic Experiments and AnalysisProposal Number: CTS-0437621Principal Investigator: Sankar NairInstitution: GA Tech Res Corp - GITReflectance and photoacoustic FTIR spectroscopy will be developed for probing the concentration profiles of the diffusing species in membranes. This technique complements the existing experimentation in this field in that it provides sub-micron information about both the chemistry of the membrane and the concentration profile of the diffusing species. The proposed research plan includes a comprehensive modeling component, primarily with regard to interpreting the experimental data. The software package developed is expected to provide a useful visualization tool of transport through membranes. The PI has previously demonstrated the strengths of the technique and published on its principles in the literature. Separate TGA experiments will be used to determine the solubility (partition coefficient) of the diffusing species in the membrane. Once the concentration profile, species flux, and solubility are known, one can match the experimental data to simple transport models. The proposed research is expected to have broader impact in the field of separations by offering a new and powerful method for studying the transport of fluids through membranes. The new insights and methods from this research will be incorporated into the undergraduate and graduate course curriculum as a module within courses on transport phenomena in confined and nanoscale environments. The educational and outreach plans outlined in the proposal are well articulated and feasible. Assessment mechanisms proposed are very important and represent strong points of the proposal. Many fields of technology would directly benefit from this research including sensor membranes, fuel-cell membranes, and membrane reactors.