Omnidirectional structural color made from metal and dielectric layers
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United States of America Patent
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Jun 23, 2020
Grant Date -
Oct 10, 2013
app pub date -
Jun 8, 2013
filing date -
Aug 12, 2007
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Abstract
A high-chroma omnidirectional structural color multilayer structure is provided. The structure includes a multilayer stack that has a core layer, a dielectric layer extending across the core layer, and an absorber layer extending across the dielectric layer. An interface is present between the dielectric layer and the absorber layer and a near-zero electric field for a first incident electromagnetic wavelength is present at this interface. In addition, a large electric field at a second incident electromagnetic wavelength is present at the interface. As such, the interface allows for high transmission of the first incident electromagnetic wavelength and high absorption of the second incident electromagnetic wavelength such that a narrow band of reflected light is produced by the multilayer stack.
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