Red omnidirectional structural color made from metal and dielectric layers
First Claim
1. A multilayer stack displaying a red omnidirectional structural color comprising:
- a core layer;
a semiconductor layer extending across said core layer, said semiconductor layer absorbing more than 70% of incident white light with wavelengths less than 550 nm; and
a dielectric layer extending across said semiconductor layer, said dielectric layer and said core layer reflecting more than 70% of said incident white light with wavelengths greater than 550 nm;
said core layer, semiconductor layer and dielectric layer forming an omnidirectional reflector, said omnidirectional reflector reflecting a single narrow band of visible electromagnetic radiation with a center wavelength between 550-700 nm, a width of less than 200 nm wide, a color shift of less than 100 nm and displaying a red omnidirectional structural color when said omnidirectional reflector is viewed from angles between 0 and 45degrees.
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Accused Products
Abstract
A multilayer stack displaying a red omnidirectional structural color. The multilayer stack includes a core layer, a semiconductor layer extending across the core layer, and a dielectric layer extending across the semiconductor layer. The semiconductor layer absorbs more than 70% of incident white light that has a wavelength less than 550 nanometers (nm). In addition, the dielectric layer in combination with the core layer reflects more than 70% of the incident white light with a wavelength greater than 550 nm. In combination, the core layer, semiconductor layer and dielectric layer form an omnidirectional reflector that reflects a narrow band of electromagnetic radiation with a center wavelength between 550-700 nm, has a width of less than 200 nm wide and a color shift of less than 100 nm when the reflector is viewed from angles between 0 and 45 degrees.
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Citations
30 Claims
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1. A multilayer stack displaying a red omnidirectional structural color comprising:
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a core layer; a semiconductor layer extending across said core layer, said semiconductor layer absorbing more than 70% of incident white light with wavelengths less than 550 nm; and a dielectric layer extending across said semiconductor layer, said dielectric layer and said core layer reflecting more than 70% of said incident white light with wavelengths greater than 550 nm; said core layer, semiconductor layer and dielectric layer forming an omnidirectional reflector, said omnidirectional reflector reflecting a single narrow band of visible electromagnetic radiation with a center wavelength between 550-700 nm, a width of less than 200 nm wide, a color shift of less than 100 nm and displaying a red omnidirectional structural color when said omnidirectional reflector is viewed from angles between 0 and 45degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification