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Microsphere-Enabled Micropillar Array for Whispering Gallery Mode Virus Detection
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DOI：10.1021/acsami.3c17751.png)
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Rapid detection of pathogens and analytes at the point of care offers an opportunity for prompt patient management and public health control. This paper reports an open microfluidic platform coupled with active whispering gallery mode (WGM) microsphere resonators for the rapid detection of influenza viruses. The WGM microsphere resonators, precoated with influenza A polyclonal antibodies, are mechanically trapped in the open micropillar array, where the evaporation-driven flow continuously transports a small volume (similar to mu L) of sample to the resonators without auxiliaries. Selective chemical modification of the pillar array changes surface wettability and flow pattern, which enhances the detection sensitivity of the WGM resonator-based virus sensor. The optofluidic sensing platform is able to specifically detect influenza A viruses within 15 min using a few microliters of sample and displays a linear response to different virus concentrations.
Keyword:
optofluidic sensors
whispering gallery modes
micropillar array
evaporation
patterning
virus detection
期刊
IF:
8.2
论文数:
6.1W
被引数:
38.7W
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