Metal-based particle assembly
AssigneeSumitomo Chemical Company, Limited
InventorTomohiro Fukuura
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Abstract
There is provided a metal-based particle assembly comprising 30 or more metal-based particles separated from each other and disposed in two dimensions, the metal-based particles having an average particle diameter in a range of from 200 to 1600 nm, an average height in a range of from 55 to 500 nm, and an aspect ratio, as defined by a ratio of the average particle diameter to the average height, in a range of from 1 to 8, wherein the metal-based particles are disposed such that an average distance between adjacent metal-based particles may be in a range of from 1 to 150 nm. This metal-based particle assembly presents significantly intense plasmon resonance and also allows plasmon resonance to have an effect over a range extended to a significantly large distance.
Claims7
An optical device comprising:
- a light-absorbing layer having a thickness of at least 10 nm;
- and
- a metal-based particle assembly comprising 30 or more metal-based particles separated from each other and disposed in two dimensions, said metal-based particles having an average particle diameter in a range of from 200 to 1600 nm, an average height in a range of from 55 to 500 nm, and an aspect ratio, as defined by a ratio of said average particle diameter to said average height, in a range of from 1 to 8, wherein
- said metal-based particles are disposed such that an average distance between adjacent metal-based particles is in a range of from 1 to 150 nm, and the optical device having in an absorption spectrum for a visible light region a maximum wavelength of a peak at a longest side in wavelength, the maximum wavelength being in a range of from 350 to 550 nm.
An optical device comprising:
- a light-absorbing layer having the thickness of at least 10 nm;
- and
- a metal-based particle assembly film-layered substrate comprising:
- a substrate;
- and
- a film composed of a metal-based particle assembly comprising 30 or more metal-based particles separated from each other and disposed in two dimensions, said metal-based particles having an average particle diameter in a range of from 200 to 1600 nm, an average height in a range of from 55 to 500 nm, and an aspect ratio, as defined by a ratio of said average particle diameter to said average height, in a range of from 1 to 8, wherein
- said metal-based particles are disposed such that an average distance between adjacent metal-based particles is in a range of from 1 to 150 nm, and the optical device having in an absorption spectrum for a visible light region a maximum wavelength of a peak at a longest side in wavelength, the maximum wavelength being in a range of from 350 to 550 nm.
Dependencies are inferred from the claim text.