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SEM images of nanoantenna array and in the inset, a magnified view of the array elements. (University of Bristol)

Researchers have designed and tested a series of plasmonic nanoantenna arrays that could lead to the development of a new generation of ultrasensitive and low-cost fluorescence sensors that could be used to monitor water quality.

The nanoantenna arrays, which can be fabricated by lower-cost production techniques such as nanoimprint lithography, can bring significant sensitivity enhancement so that laboratory quality measurements could be carried out in the field.

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