4.6 Article

Surface cytometer for fluorescent detection and growth monitoring of bacteria over a large field-of-view

期刊

BIOMEDICAL OPTICS EXPRESS
卷 10, 期 4, 页码 2101-2116

出版社

OPTICAL SOC AMER
DOI: 10.1364/BOE.10.002101

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资金

  1. Spanish Ministry of Economy and Competitiveness through the severo Ochoa Programme for Centres of Excellence in RD [SEV-2015-0522]
  2. OPTO-SCREEN [TEC2016-75080-R]
  3. Fundacio Privada Cellex
  4. Generalitat de Catalunya through the CERCA program
  5. AGAUR 2017 [SGR 1634]

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Monitoring the early onset of bacterial film formation is critical in many clinical, environmental, and food quality control applications. We built a small inexpensive optical surface cytometer, in contrast with bulk spectroscopic methods, around a light-emitting diode (LED) and a complementary metal-oxide-semiconductor (CMOS) image sensor. It is designed to offer a large field-of-view of 200 mm(2) and a large depth-of-field of 2-3 mm to overcome the limitations of routine methods like spectrophotometry and fluorescence microscopy. It provides a direct measurement without the need for complex image post-processing with a limit-of-detection around 10(4) cells/mm(2), which is competitive with other similar yet more complex devices already available. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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