Physicists suggest new way to measure speed in liquid micro-flows
(PHYSorg.com Physics)

Scientists from ITMO University developed a novel optical method of measuring reagent delivery rates for `labs on a chip.` The method is based on a dynamic interaction between a nanoantenna and luminescent molecules as the distance between them affects light intensity. Processed mathematically, these light dynamics determine the flow speed. This method can also be used for measuring temperature and identifying flow types. The research was published in Laser & Photonics Reviews.