Scientists have recently developed a nanophotonic sensor that could revolutionize the way we detect and measure a variety of substances. This new technology is based on a plasmonic nanostructure consisting of a gold nanorod which is placed on top of a photonic crystal waveguide. This nanostructure acts as a ‘hot-spot’ where light is efficiently concentrated, thus allowing for extremely sensitive and accurate measurements. The nanostructure is then coupled with a highly sensitive photodetector, allowing for the detection and measurement of various substances, including proteins, drugs, and bacteria. This is an exciting breakthrough with great potential for a variety of applications, including medical diagnostics and environmental monitoring.

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source: Phys.org