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 拉赫塔基亚智力功德。工业过程中化学废物的扩散、农业径流中的杀虫剂、垃圾填埋场中金属的浸出，都体现了日益严重的水资源污染问题。恐怖分子故意向国家水资源中引入杀虫剂和细菌是一个相关的潜在问题。当今的光学传感器设计用于一次检测一种分析物。如果每个传感器能够感测一种以上的分析物，检测的速度将大大提高。理论表明，在特定的自由空间波长下，金属薄膜和称为手性雕塑薄膜（CSTF）的纳米材料的平面界面可以激发一种以上的表面等离激元极化（SPP）波，而传统的基于SPP的光学平台只能激发一种SPP波。 传感技术。这个为期一年的 EAGER 项目的目标是从理论上和实验上了解使用金属/CSTF 接口仅通过一个光学传感器进行多分析物传感的基本原理。利用氧化钛和氧化钽柱状薄膜和铝薄膜的实验数据，将进行计算，以合理地绘制与沉积条件相关的多种 SPP 波模式的出现。 CSTF。铝和 CSTF 将沉积在常见的 Kretschmann 配置中，以通过实验验证多种 SPP 波模式的预测。最后，将通过用水渗透 CSTF 并记录 Kretschmann 配置中的角度变化来进行概念验证传感实验。多分析物传感器的理论基础和实现之间存在两个不完整的联系。首先，必须对金属/CSTF 界面引导的多种 SPP 波模式进行清晰、全面的实验验证。其次，除了 CSTF 是多孔的之外，溅射的金属膜也将是多孔的，因此所提出的传感器的特性可能比想象的更复杂。因此，对于有效地调用非 EAGER 融资机制来说，这是一个高风险的建议。成功将带来高回报，因为传感液体中生化物质的能力将大大增强。更广泛的影响。该项目将让一名美国研究生参与跨学科研究，将纳米材料合成和光学反射率/透射率测量等主题联系起来。 PI 的教授职位将资助宾夕法尼亚州立大学工程本科生参与拟议的研究。两名学生都需要参加宾夕法尼亚州立大学由学生举办的年度工程研究学院研讨会，以提高他们的演讲技巧。该项目还将与加拿大魁北克省的 Groupe GDG Énvironmente Lte 展开密切合作，该公司是环境健康技术的行业领导者，重点关注基于传感器和芯片实验室技术的新型诊断工具。