NIRT: Plasmonic Nanostructured Devices for Chemical and Biological Sensing

NIRT：用于化学和生物传感的等离激元纳米结构器件

• 批准号: 0403865
• 负责人: Hong Koo Kim
• 金额: $ 130万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0403865&HistoricalAwards=false
• 关键词: NIRT; Plasmonic; Nanostructured; Devices; Chemical

This NIRT proposal focuses on investigating the fundamentals of plasmon phenomena in nanoscale metallic structures and exploring the use of plasmonic chip technologies in bio-chemical sensing. Metallic nanoaperture arrays will be investigated as a base structure to provide wavelength-dependent transmission of light with strong confinement (with lateral dimension much smaller than wavelength of light). We will chemically modify the nanoaperture surface with receptors for chemical and biological analytes. Analyte adsorption is expected to alter the local dielectric properties at metal surface and thus the optical transmission via a change in the near-field coupling in the aperture region. We propose mechanisms for analyte detection that exploit both the dispersive part of the analytes optical response and its absorptive (loss) part. Intellectual merit: This NIRT program aims at developing a quantitative understanding of the plasmonic phenomena occurring in chemically-modified metallic nanoaperture structures. This program also addresses scientific and engineering challenges in developing plasmonic chip technologies for biochemical sensing. Broader impacts: This program is expected to lead to the development of an unprecedented (high-throughput and ultracompact) sensor technology, and will make major contributions to various fields that involve monitoring/detecting biochemical agents, such as health care, environment and homeland security. This program stimulates interactions among a highly multidisciplinary team of experts from Electrical Engineering, Chemistry and Physics, and will provide an educational paradigm for training future scientists and engineers for the emerging field of nanophotonics and plasmonics. In this NIRT program, the education and outreach will be integrated with research through various activities.

该 NIRT 提案重点研究纳米级金属结构中等离激元现象的基础知识，并探索等离激元芯片技术在生化传感中的应用。 金属纳米孔径阵列将作为基础结构进行研究，以提供具有强限制的依赖于波长的光传输（横向尺寸远小于光的波长）。 我们将用化学和生物分析物的受体对纳米孔径表面进行化学修饰。 分析物吸附预计会改变金属表面的局部介电特性，从而通过改变孔径区域中的近场耦合来改变光传输。我们提出了利用分析物光学响应的​​色散部分及其吸收（损失）部分的分析物检测机制。智力价值：该 NIRT 项目旨在定量理解化学改性金属纳米孔径结构中发生的等离子体现象。 该计划还解决了开发用于生化传感的等离子体芯片技术方面的科学和工程挑战。更广泛的影响：该计划预计将导致前所未有的（高通量和超紧凑）传感器技术的发展，并将为涉及监测/检测生化制剂的各个领域（例如医疗保健、环境和国土安全）做出重大贡献。该项目促进了来自电气工程、化学和物理的高度多学科专家团队之间的互动，并将为培训纳米光子学和等离激元学新兴领域的未来科学家和工程师提供教育范例。 在此 NIRT 计划中，教育和推广将通过各种活动与研究相结合。