Ultra-Broadband Plasmon-Polariton Crystals for Label-Free Single Molecule Detection

用于无标记单分子检测的超宽带等离子极化子晶体

• 批准号: 0932611
• 负责人: Hooman Mohseni
• 金额: $ 19.66万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0932611&HistoricalAwards=false
• 关键词: Ultra; Broadband; Plasmon; Polariton; Crystals

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).0932611Mohseni This NSF award by the Biosensing /CBET program supports work by Professor Hooman Mohseni at Northwestern University to study a novel nano-structure called "Plasmon-Polariton Crystal" and to explore the possibility of detecting single molecules without attaching chemical labels to them. The main goal of this research is to explore the unique properties of the Plasmon-Polariton Crystal and achieve a very large optical bandwidth, exceeding several Tera Hertz, as well as a very large Purcel's constant. Unlike the existing photonic resonators and cavities that rely on a very large quality factor to achieve a high sensitivity, the proposed Plasmon Polariton Crystal has a small quality factor that leads to a very large bandwidth and the possibility of spectral fingerprint sensing.Specifically, PI plans to use detailed three-dimensional electromagnetic simulations to optimize the proposed structure for a practical realization using conventional dielectric and metal layers. PI also plans to fabricate such structures using advanced micro and nano-processing tools. Finally, the most important optical properties leading to an understanding of the device bandwidth and Purcell constant will be measured.Proposed research advances the physics of rapidly growing plasmonic devices. With a sensing volume in the Zepto-litter range, and a very large cavity coupling over large bandwidth, the proposed nano-structure could impact a wide range of fields such as single-molecule detection, cavity quantum electrodynamics, and quantum dot single-photon sources.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。这项由美国国家科学基金会生物传感/CBET项目颁发的奖项支持了西北大学胡曼·莫赫塞尼教授的工作，他研究了一种名为“等离子激元-极化晶体”的新型纳米结构，并探索了在不附加化学标签的情况下检测单个分子的可能性。本研究的主要目标是探索等离子体-极化晶体的独特特性，并实现超过几兆赫兹的非常大的光带宽，以及非常大的珀塞尔常数。与现有的光子谐振器和腔依赖于非常大的质量因子来实现高灵敏度不同，所提出的等离子体激元晶体具有很小的质量因子，从而导致非常大的带宽和光谱指纹传感的可能性。具体来说，PI计划使用详细的三维电磁模拟来优化所提出的结构，以便使用传统的介电层和金属层进行实际实现。PI还计划使用先进的微纳米加工工具制造这种结构。最后，将测量最重要的光学特性，从而了解器件带宽和珀塞尔常数。提出的研究推进了快速增长的等离子体器件的物理学。由于传感体积在zepto - itter范围内，并且在大带宽上具有非常大的腔耦合，因此所提出的纳米结构可以影响广泛的领域，如单分子检测，腔量子电动力学和量子点单光子源。