EAGER: Towards Simultaneous Optical Sensing of Multiple Analytes With a Multiple Surface-Plasmon-Polariton-Wave Platform

EAGER：利用多表面等离子极化波平台对多种分析物进行同步光学传感

• 批准号: 1106503
• 负责人: Akhlesh Lakhtakia
• 金额: $ 5.75万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2013-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1106503&HistoricalAwards=false
• 关键词: EAGER; Towards; Simultaneous; Optical; Sensing

1106503 Lakhtakia Intellectual Merit. The dispersal of chemical wastes from industrial processes, pesticides from agricultural run-offs, metal leaching from landfills, all exemplify the growing problem of pollution of water resources. The deliberate introduction of pesticides and bacteria by terrorists in the nation's water resources is a related potential problem. Today's optical sensors are designed to detect one analyte at a time. If each sensor could sense more than one analyte, the rapidity of detection would be greatly enhanced.Theory has shown that more than one surface- plasmon-polariton (SPP) wave can be excited at the planar interface of a metal film and a nanomaterial called a chiral sculptured thin film (CSTF) at a specific free-space wavelength, in contrast to the only one SPP wave that can be excited in conventional platforms for SPP-based optical sensing technology. The aim of this 1-year EAGER project to theoretically and experimentally understand the underlying principles towards the use of a metal/CSTF interface for multi-analyte sensing with just one optical sensor.With experimental data available for titanium-oxide and tantalum-oxide columnar thin films and aluminum thin films, calculations will be made to reasonably map the occurrence of multiple SPP-wave modes in relation to the deposition conditions of CSTFs. Aluminum and CSTFs will be deposited in the commonplace Kretschmann configuration to verify the prediction of multiple SPP-wave modes experimentally. Lastly, a proof-of-concept sensing experiment will be performed by infiltrating a CSTF with water and noting the angular shifts in the Kretschmann configuration. Two incomplete links exist between the theoretical foundation and the realization of a multi-analyte sensor. First, clear and comprehensive experimental verification of the multiple SPP-wave modes guided by the metal/CSTF interface has to be carried out. Second, the sputtered metal film will also be porous, in addition to the CSTF being porous, so that the characteristics of the proposed sensor could be more complicated than thought. Hence, this is a high-risk proposal for non-EAGER funding mechanisms to be fruitfully invoked. Success will result in a high pay-off, as the capacity for sensing biochemicals in fluids would be greatly enhanced.Broader Impact. This project will engage one US graduate student in interdisciplinary research that bridges topics in nanomaterials synthesis and optical reflectance/transmittance measurements. The PI's endowed professorial chair will fund the participation of an undergraduate engineering student at Penn State in the proposed research. Both students will be required to develop their presentation skills by participating in the annual student-run College of Engineering Research Symposium at Penn State. The project will also initiate a tight collaboration with Groupe GDG Énvironmente Lte, Quebec, Canada, an industrial leader in environmental health technology, with a strong focus on new diagnostics tools based on sensors and lab-on-a-chip technology.

1106503 lakhtakia知识。工业过程中的化学废物的分散，农业径流中的农药，从垃圾填埋场中步行的金属，都典范水资源污染的日益增长的问题。恐怖分子在美国水资源中故意引入农药和细菌是一个相关的潜在问题。当今的光传感器旨在一次检测一个分析物。如果每个传感器能够感知多个分析物，那么检测的迅速性将得到很大的增强。理论表明，一个以上的表面播种机 - 孔子（spp）波可以激发金属膜的平面界面和一种称为纳米材料的平面界面和称为手性雕刻薄膜的纳米材料的纳米材料（CSTF）的范围，而在特定的自由空间的范围内，则在某种程度上是在对比的范围内，而在某种程度上，在对比的范围内，是在相反的范围内，是在相反的范围内，是在对比的范围内，是在对比的范围内，是在对比的范围内，是在对立的范围。传感技术。这个为期一年的急切项目的目的是理论上和实验理解使用金属/CSTF界面的基本原则，仅具有一个光学传感器。可用于钛氧化钛和tantalum-OxiDe comminar薄膜和铝薄膜的钛和铝薄膜的含量及其在合理的范围内的实验数据。 CSTFS。铝和CSTF将沉积在普通的Kretschmann配置中，以实验验证多个SPP波模式的预测。最后，将通过用水渗入CSTF并注意Kretschmann构型的角移，进行概念验证传感器实验。理论基础与多分析剂传感器的实现之间存在两个不完整的联系。首先，必须对以金属/CSTF界面引导的多个SPP波模式进行清晰而全面的实验验证。其次，除了CSTF是多孔的外，溅射的金属膜也将是多孔的，因此提出的传感器的特性可能比想象的要复杂。因此，这是一个高风险的提议，要援引非急于的资金机制。成功将导致高收益，因为传感生化的能力将大大提高。该项目将与一名美国研究生参与跨学科研究，该研究桥梁构成纳米材料合成和光学反射/透射率测量的主题。 PI的捐赠专业主席将资助宾夕法尼亚州立大学一名本科工程专业的学生参加拟议的研究。两名学生都将被要求通过参加宾夕法尼亚州立大学的年度学生经营学院来发展自己的演讲技巧。该项目还将与加拿大魁北克省GDGénvironmenteLTE进行紧密合作，加拿大魁北克省，是环境卫生技术的工业领导者，强烈关注基于传感器和实验室芯片技术的新诊断工具。