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Home > News > Copper Film Enables Accurate Optical Humidity Sensing

April 10th, 2007

Copper Film Enables Accurate Optical Humidity Sensing

Abstract:
The sensor material could be applied onto the package itself, according to Norman A. Lüchinger from the Institute for Chemical and Bioengineering at ETH. It is based on carbon-coated copper nanoparticles suspended in a polymer matrix to create a stable water dispersion. During preparation of copper dispersions, the researchers found, almost by accident, that they showed strong and vivid coloration patterns when in contact with humid air.

Source:
photonics.com

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