New type of standalone gas sensors based on dye, thin films, and subwavelength structures
2009
A new gas sensor was developed to enable visual indication of a contamination by specific gases like NO 2 , SO 2 , UV, etc. The sensor works with a combination of subwavelength structures and specific active dye thin film layers. The objective is to use the optical changes of the dye thin films after exposure and a custom designed subwavelength structure, a suited combination of both will produce a strong color change.
The indication should be visible for the human eye. To enhance this visual aspect, we used a reference sensor sealed into a non-contaminated atmosphere.
This work was realized within the PHODYE STREP Project, a collaboration of the 6th Framework Program Priority Information Society Technologies.
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