RAPID: Fabrication of Bioinspired Plasmonic Nanoarrays for Biosensing and Trace Chemical Detection

在化学系化学测量和成像计划以及化学、生物工程、环境和运输系统系纳米材料的生物传感器和生物与环境相互作用计划的支持下，波多黎各大学马亚圭兹分校的Marco de Jesse博士和他的团队正在模仿自然创造新一代先进、高性能的材料，这些材料以不寻常的和潜在有用的方式与光相互作用。该团队与橡树岭国家实验室纳米相材料科学中心(CNMS)合作，正在评估详细设计对颗粒阵列性能的影响，以实现对抗菌剂、新出现的污染物和具有生物医学和环境意义的生物活性物质等样品更快、更具重复性的分析。这些研究的结果可能会影响国家利益的领域，包括太阳能电池、先进的光学传感器和分子探测器的建造。该项目正在为不同的本科生和研究生提供跨学科的培训和研究机会，涉及纳米技术、化学传感和生物分析化学。该项目旨在提高我们目前对纳米材料与生物活性物质在液/固界面上相互作用的理解。具体地说，在与ORNL-CNMS的合作中，de Jesse博士和他的团队评估了金属表面等离子体反应的效率作为纳米颗粒形态、颗粒间距和空间分辨率的函数。他们特别感兴趣的是这些性质对这些用于化学传感应用的材料的承载能力和定量工作范围的影响。通过竞争结合实验和多变量拉曼分析，他们试图确定混合化学试剂表面相互作用的结构依赖性，以阐明混合化学试剂的表面选择性和实际定量的趋势。该项目的成功完成可能会为为痕量化学分析量身定做的纳米材料的合理设计提供新的进展。这项工作为不同群体的UPRM本科生和研究生提供了应用于化学系统的纳米技术的研究和培训机会，研究生直接接触到CNMS最先进的设施。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

With support from the Chemical Measurement and Imaging Program in the Division of Chemistry, and the Biosensors and the Biological & Environmental Interactions of Nanoscale Materials Programs in the Division of Chemical, Bioengineering, Environmental, and Transport Systems, Dr. Marco De Jesus and his group at the University of Puerto Rico - Mayaguez are mimicking nature to create a new generation of advanced, high performance, materials which interact with light in unusual and potentially useful ways. In collaboration with the Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National Laboratory, the team is assessing the impact of detailed design on the performance of particle arrays for faster and more reproducible analysis of samples such as antimicrobials, emerging pollutants, and bioactive agents of biomedical and environmental significance. Results of these studies may impact areas of national interest including the construction of solar cells, advanced optical sensors, and molecular probes. The project is providing interdisciplinary training and research opportunities to a diverse group of undergraduate and graduate students in nanotechnology, chemical sensing, and bioanalytical chemistry.This project seeks to improve our current understanding of how nanomaterials interact with bioactive agents at the liquid/solid interface. Specifically, in collaboration with ORNL-CNMS, Dr. De Jesus and his team assess the efficiency of plasmonic responses on metallic surfaces as a function of nanoparticle morphology, interparticle spacing, and spatial resolution. They are particularly interested in the impact of these properties on the loading capacity and quantitative working range of these materials for chemical sensing applications. Using competitive binding experiments and multivariate Raman analysis, they seek to identify the structural dependence of surface interactions of mixed chemical agents to elucidate surface selectivity and trends for practical quantitation of mixtures. The successful completion of this project may provide new advances toward the rational design of nanomaterials with tailored properties for trace chemical analysis. The work provides research and training opportunities for a diverse group of UPRM undergraduate and graduate students in nanotechnology applied to chemical systems, with direct exposure of the graduate students to state-of-the-art facilities at CNMS.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.