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Bioengineering
用数字全息显微镜 (DHM) 定量化低浓度微生物
用数字全息显微镜 (DHM) 定量化低浓度微生物
JoVE Journal
Bioengineering
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JoVE Journal Bioengineering
Quantifying Microorganisms at Low Concentrations Using Digital Holographic Microscopy (DHM)

用数字全息显微镜 (DHM) 定量化低浓度微生物

Full Text
10,906 Views
07:27 min
November 1, 2017

DOI: 10.3791/56343-v

Manuel Bedrossian1, Casey Barr2, Chris A. Lindensmith3, Kenneth Nealson2, Jay L. Nadeau1

1Department of Medical Engineering,California Institute of Technology, 2Department of Earth Sciences,University of Southern California, 3Jet Propulsion Laboratory,California Institute of Technology

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Please note that some of the translations on this page are AI generated. Click here for the English version.

数字全息显微镜 (DHM) 是一种体积技术, 允许成像样品50-100X 厚比明显微镜在可比的分辨率, 与重点进行后处理。DHM 用于识别、计数和跟踪非常低密度的微生物, 并与光学密度测量、平板计数和直接计数相比较。

本实验的总体目标是展示使用数字全息显微镜检测极低水平的微生物。该技术比传统的光学显微镜更灵敏,并提供有关细菌行为的实时信息。这种方法可以帮助回答生物学和宇宙学领域的关键问题,例如在冰冷的卫星上寻找水中的病原生物或太阳系内的生命。

该技术的主要优点是 DHM 是一种体积技术,这意味着我们可以立即捕获样品的三维信息,而无需物理重新聚焦。由于能够检测低细菌浓度,该技术的意义延伸到血流或脑脊液感染的诊断。要开始此过程,请在实验当天对细菌主培养物进行分光光度法读数,预计读数在 0.6 至 0.7 之间。

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生物工程 问题 129 体积显微镜 全息显微镜 马赫-曾德尔 干涉显微镜 细菌计数 无标签成像 天体生物学 生命检测

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