Specific molecules can be detected with unprecedented sensitivity using plasmonics and nano-particles – “100 times more sensitive than current similar sensors”, according to the University of Bath. At the heart of the sensor is an array of gold discs – the nano-particles – deposited on a transparent substrate. A laser (~760nm) is used to excite ...
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from Electronics Weekly https://www.electronicsweekly.com/news/research-news/plasmonic-nano-particles-sense-chemicals-better-ever-2019-01/
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