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Microscopic cage for light traps photons but lets fluids through

作者:经驽藤    发布时间:2019-02-27 06:05:05    

PHOTONS keep out! Microscopic cages could be built to block light, while letting liquid and gas flow. Boxes can shield objects from light, but when accessing the contents, light slips through any holes you make. That’s a problem for proposed medical techniques using targeted light to control drug release. Now Ali Mirzaei of the Australian National University in Canberra and his colleagues may have a solution: “optical metacages” made from ultra-thin wires. The team simulated a wire 200 nanometres wide and found it absorbed light from up to 100 nanometres from its edge. Placing wires at intervals would make cages that stop light going in or out (Physical Review Letters,

 

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