Fluorescence measurement instrumentation with pattern recognition capability

具有模式识别功能的荧光测量仪器

• 批准号: 156900-2006
• 负责人: Boukadoum, Mounir
• 金额: $ 1.24万
• 依托单位: Université du Québec à Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=391881
• 关键词: Fluorescence; measurement; instrumentation; pattern; recognition

Fluorescence is the property of some materials and organisms to absorb light and reemit it at different, warmer colors. The study of fluorescence has useful applications in several areas, of which agriculture, food processing, environmental studies, biochemical analysis, substance identification, and bacteria detection. Fluorescence measurements can be very accurate, with much better sensitivities than those obtained with using other spectroscopic techniques. Still, more innovative research is needed to improve further, and thus overcome some weaknesses of fluorescence methods. These include the bulk and cost of the required instruments, the need for precise calibration procedures, the need to compensate for environmental changes and the usually manual or semi-automatic measurement process. Also, the processing of the acquired data is a complex task and requires sophisticated techniques to extract useful information from the obtained spectra. This has led to the development of ad hoc acquisition techniques that are specific to given problems and cannot be generalized. This is in part because the sensor developers speak a technical language that is often obscure to end users who come from other areas of expertise.    Ongoing research in our laboratory aims at investigating basic questions such as the above, and ultimately propose integrated, system-on-a-chip, solutions that allow the study of the physical and chemical properties of various substances and/or the identification of these substances with their concentration in various contexts. In the present proposal, we address concerns of size and efficiency, and adding functionality such as the ability to perform automatic, online analysis of the acquired fluorescence signals in the absence of comprehensive models. We believe that our research will lead to the development of generic system-on-a-chip devices that can be easily adapted to various applications, including biomedical ones, while enhancing their ease of use by non technical experts.

荧光是某些材料和生物体吸收光并以不同的更温暖的颜色重新发射的特性。荧光的研究在农业、食品加工、环境研究、生物化学分析、物质鉴定和细菌检测等几个领域有着有用的应用。荧光测量可以非常准确，具有比使用其他光谱技术获得的灵敏度好得多的灵敏度。尽管如此，需要更多的创新研究来进一步改进，从而克服荧光方法的一些弱点。其中包括所需仪器的体积和成本、对精确校准程序的需求、补偿环境变化的需求以及通常的手动或半自动测量过程。此外，所获得的数据的处理是一项复杂的任务，需要复杂的技术来从所获得的光谱中提取有用的信息。这导致了专门针对特定问题而不能一概而论的特设采集技术的发展。这在一定程度上是因为传感器开发人员使用的技术语言对于来自其他专业领域的最终用户来说通常是晦涩难懂的。 我们实验室正在进行的研究旨在调查上述基本问题，并最终提出集成的片上系统解决方案，允许研究各种物质的物理和化学性质和/或在各种情况下识别这些物质及其浓度。在本提案中，我们解决了对尺寸和效率的关注，并增加了功能，例如在缺乏综合模型的情况下对所获得的荧光信号进行自动在线分析的能力。我们相信，我们的研究将导致通用片上系统设备的开发，这些设备可以很容易地适应各种应用，包括生物医学应用，同时提高非技术专家的易用性。