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US 11,655,377 B2Granted
Inorganic paint pigment with plasmonic aluminum reflector layers and related methods
AssigneeUniversity of Central Florida Research Foundation, Inc.
InventorsDebashis Chanda, Daniel Franklin, Pablo Manuel Cencillo Abad
Life of this patent
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Abstract
An inorganic paint pigment may include a fluid matrix, and paint flakes carried within the fluid matrix. Each paint flake may include a common aluminum layer having a first major surface and a second major surface opposing the first major surface, a first plasmonic aluminum reflector layer carried by the first major surface, and a second plasmonic aluminum reflector layer carried by the second major surface.
Claims22
An inorganic paint pigment comprising:
- a fluid matrix;
- and
- a plurality of paint flakes carried within the fluid matrix;
- each paint flake comprising
- a common aluminum layer having a first major surface and a second major surface opposing the first major surface,
- a first plasmonic aluminum reflector layer carried by the first major surface, and
- a second plasmonic aluminum reflector layer carried by the second major surface;
- each of the first plasmonic aluminum reflector layer and the second plasmonic aluminum reflector layer comprising
- an oxide layer over the common aluminum layer, and
- a layer of self-assembled aluminum particles over the oxide layer and having hybridized individual plasmonic modes to provide angle independent color, a gap between the common aluminum layer and the layer of self-assembled aluminum particles being less than 10 nm.
7 more elements
An inorganic paint pigment comprising:
- a fluid matrix;
- and
- a plurality of paint flakes carried within the fluid matrix;
- each paint flake comprising
- a common aluminum mirror layer having a first major surface and a second major surface opposing the first major surface,
- a first plasmonic aluminum reflector layer carried by the first major surface, and
- a second plasmonic aluminum reflector layer carried by the second major surface,
- each of the first plasmonic aluminum reflector layer and the second plasmonic aluminum reflector layer comprising
- an oxide layer over the common aluminum mirror layer, and
- a layer of self-assembled aluminum particles over the oxide layer and having hybridized individual plasmonic modes to provide angle independent color, a gap between the common aluminum mirror layer and the layer of self-assembled aluminum particles being less than 10 nm, a wavelength of the angle independent color being based upon a diameter of the self-assembled aluminum particles.
7 more elements
A method for making an inorganic paint pigment comprising:
- forming a plasmonic aluminum reflector stack on a sacrificial polymer layer;
- and
- releasing the plasmonic aluminum reflector stack via a sonication step into a solvent and generating a plurality of paint flakes from the plasmonic aluminum reflector stack, each paint flake comprising
- a common aluminum layer having a first major surface and a second major surface opposing the first major surface,
- a first plasmonic aluminum reflector layer carried by the first major surface, and
- a second plasmonic aluminum reflector layer carried by the second major surface.
3 more elements
Dependencies are inferred from the claim text.