Equipment: MRI: Track 1 Acquisition of a Tunable Ultrafast Spectroscopy System at a Primarily Undergraduate Institution to Enhance Undergraduate Training

设备： MRI：第一轨道在本科院校采购可调谐超快光谱系统，以加强本科生培训

• 批准号: 2319135
• 负责人: Brandon Mitchell
• 金额: $ 32.05万
• 依托单位: West Chester University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2319135&HistoricalAwards=false
• 关键词: Equipment; MRI; Track; Acquisition; Tunable

Non-Technical Description:To advance the utilization of materials essential for emerging technologies such as augmented reality, quantum sensing, nanomaterial-based biosensing, artificial photosynthesis, and optogenetics, a thorough understanding of their optical and electrical properties is critical. Many of these materials properties result from processes that occur very quickly, on the order of picoseconds, and do not result in light emission. Thus, conventional emission-based spectroscopic techniques, such as photoluminescence, cannot be used. An ultra-fast transient absorption spectrometer allows for the precise measurement of the temporal variation in a material's light absorption with sub-picosecond resolution. This major research instrumentation grant adds a transient absorption spectrometer to the existing spectroscopic measurement equipment at West Chester University of Pennsylvania (WCU). The instrument provides advanced hands-on training opportunities for undergraduate students at WCU to prepare them for the STEM workforce in a variety of areas, such as physics, biomedical engineering, materials engineering, chemistry, and molecular biology. Additionally, the instrument integrates into WCU's high school outreach programs. Lastly, it fosters broad collaboration and enhances student exposure to research expertise by providing access to other institutions in the greater Philadelphia area.Technical Description:This highly versatile ultrafast transient absorption spectrometer system facilitates research projects across various disciplines, offering pump and probe ranges of 258 nm - 1400 nm and 350 nm - 1000 nm, respectively. This broad range enables investigations into diverse condensed matter and biological systems. Integrated into an existing spectroscopic measurement system, the instrument allows for sub-picosecond resolution measurements, including transient absorption, photoluminescence, and time-correlated single photon counting. Researchers at WCU utilize this instrument to explore: the carrier dynamics of rare-earth-doped semiconductors for micro-display and quantum information applications, the excitation/decay dynamics of nanoporous silicon powders for biosensing, the photoinduced electron transfer involving gold nanoclusters, nitrogen-vacancy centers in nanodiamond aerogel composites for quantum sensing, etc. Furthermore, external investigators employ the instrument to probe the exciton dynamics in Rubrene and to investigate new materials for photovoltaics.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述：促进对新兴技术必不可少的材料的利用，例如增强现实，量子传感，基于纳米材料的生物传感，人工光合作用和光遗传学，对它们的光学和电气的透彻理解至关重要。这些材料中的许多属性是由在皮秒界迅速发生的过程中产生的，并且不会导致光发射。因此，无法使用基于常规发射的光谱技术，例如光致发光。超快速的瞬态吸收光谱仪可以精确地测量材料的光吸收中的时间变化，并通过次秒分辨率进行。这项主要的研究仪器拨款为宾夕法尼亚州西切斯特大学（WCU）的现有光谱测量设备增加了瞬态吸收光谱仪。该乐器为WCU的本科生提供了高级的动手培训机会，以准备在各个领域为STEM劳动力做好准备，例如物理学，生物医学工程，材料工程，化学和分子生物学。此外，该乐器还将其集成到WCU的高中外展计划中。 Lastly, it fosters broad collaboration and enhances student exposure to research expertise by providing access to other institutions in the greater Philadelphia area.Technical Description:This highly versatile ultrafast transient absorption spectrometer system facilitates research projects across various disciplines, offering pump and probe ranges of 258 nm - 1400 nm and 350 nm - 1000 nm, respectively.这个广泛的范围可以调查对各种冷凝物和生物系统的调查。该仪器整合到现有的光谱测量系统中，允许进行亚皮秒的分辨率测量，包括瞬态吸收，光致发光和时间相关的单个光子计数。 Researchers at WCU utilize this instrument to explore: the carrier dynamics of rare-earth-doped semiconductors for micro-display and quantum information applications, the excitation/decay dynamics of nanoporous silicon powders for biosensing, the photoinduced electron transfer involving gold nanoclusters, nitrogen-vacancy centers in nanodiamond aerogel composites for quantum sensing, etc.此外，外部调查人员采用该工具来探究rubrene中的激子动态，并调查光伏的新材料。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子的评估和更广泛的影响来审查标准的评估。