Device Uses Structural Color to Image-Characterize Ambient Gases
https://www.photonics.com/Articles/Device_Uses_Structural_Color_to/a68628
Researchers from the National Institute for Materials Science (NIMS, Japan), Harvard University, and the University of Connecticut jointly designed and fabricated a simple device developed for imaging a gas injected into it — in multiple colors and in accordance with its gaseous properties — enabling chromatic discrimination of different gases. The device converts the pressure generated by an injected gas into structural color, thereby “imaging” it.
The technology holds potential for a range of applications, including environmental monitoring, safety assurance, and health care.
Almost all ambient gases are colorless and invisible, and only a few methods for imaging ambient gas flow have been developed....
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