Tune­able phase change ma­te­ri­als en­able mi­croscale in­frared spec­troscopy

Chemical Industry Digest - - Science Pages -

Re­searchers from the Sin­ga­pore Univer­sity of Tech­nol­ogy and De­sign (SUTD) in col­lab­o­ra­tion with Dalian Univer­sity of Tech­nol­ogy (DUT) and the Sin­ga­pore Sinchrotron Light Source (SSLS) have demon­strated that tune­able phase change ma­te­ri­als, which are more typ­i­cally found in data stor­age de­vices, can be used to tune the re­sponse of mi­croscale in­frared trans­mis­sive “meta­sur­face” fil­ters. The fil­ters can be tuned across the broad band of fre­quen­cies in the mid-in­frared spec­trum where many pol­lu­tant gasses vi­brate.

SUTD lead re­searcher, As­sis­tant Prof Robert Simp­son said, “These in­frared fil­ters are so small that they can be in­cor­po­rated into a smart phone. This would al­low you to mea­sure the qual­ity of the oil that has been used to fry your food, mea­sure the air that you breathe, or to mea­sure flu­ids that are ex­pelled from your body to check the con­di­tion of your health,” as pub­lished in Ad­vanced Op­ti­cal Ma­te­ri­als.

Il­lus­tra­tion of the meta­sur­face in­ter­act­ing with gas mol­e­cules. Source: R&D- www.rd­mag.com (In­dus­trial Re­search)

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