Metallic Nanocluster Surface Coated Nano VCSEL Arrays for Trace Gas Detection

用于痕量气体检测的金属纳米团簇表面涂层纳米 VCSEL 阵列

• 批准号: 0901388
• 负责人: Lynford Goddard
• 金额: $ 27.63万
• 依托单位: University of Illinois at Urbana-Champaign
• 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: 2009-05-01 至 2013-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901388&HistoricalAwards=false
• 关键词: Metallic; Nanocluster; Surface; Coated; Nano

Objective: The PI proposes using palladium and metal oxide nanoclusters as catalytic coatings for fast, high sensitivity/specificity, chemical to optical transduction. Coated, optically pumped, nanoscale VCSELs amplify and encode gas induced changes into an output power and/or wavelength shift for remote readout. Intellectual Merit: This effort merges new research in nanoscale materials and device architectures to transform current scientific understanding of nanophotonic sensors. Gas induced lattice expansion of palladium nanoclusters is a hot research topic for electrical hydrogen sensors, but due to potential sparking, optical sensors are advantageous. The PI proposes expanding current research by characterizing the complex refractive index change caused by lattice expansion and testing sensors based on this effect.Broader Impacts: Hydrogen is an attractive alternative fuel, but there is widespread public concern about its safe production and usage due to hydrogen's low flammability point of 4% in air. Poor response speed, sensitivity, and reliability of current hydrogen sensors could derail the future hydrogen fuel economy. Thus, this project can produce broad societal impact by demonstrating high performance sensors. Additionally, the research offers rich opportunities for teaching and training of graduate and undergraduate researchers in several disciplines. Participation of underrepresented groups will be broadened through on campus recruitment, REU internships, and K-12 outreach activities.

目的：PI建议使用钯和金属氧化物纳米簇作为催化涂层，以实现快速、高灵敏度/特异性、化学到光学的转导。涂覆的、光泵浦的纳米级VCSEL将气体诱导的变化放大并编码为输出功率和/或波长漂移，用于远程读出。智能价值：这一努力融合了纳米材料和设备架构方面的新研究，以改变目前对纳米光子传感器的科学理解。钯纳米团簇的气体诱导晶格膨胀是电氢传感器的研究热点，但由于潜在的火花效应，光学传感器具有很大的优势。PI建议通过表征晶格膨胀引起的复杂折射率变化来扩展当前的研究，并基于这种影响测试传感器。广泛的影响：氢是一种有吸引力的替代燃料，但由于氢在空气中的低燃点(4%)，其安全生产和使用受到公众的广泛关注。当前氢传感器的响应速度、灵敏度和可靠性较差，可能会破坏未来的氢燃料经济性。因此，该项目可以通过展示高性能传感器产生广泛的社会影响。此外，这项研究还为几个学科的研究生和本科生的教学和培训提供了丰富的机会。代表不足的群体的参与将通过校园招聘、农村地区实习和K-12外联活动扩大。