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US 7,015,139 B2Granted
Two-dimensionally arrayed quantum device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorIchiro Yamashita
Life of this patent
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Abstract
A quantum device is constituted from a two-dimensional array of quantum dots formed from metal atom aggregates contained in a metalloprotein complex. The metalloprotein is arranged on the surface of a substrate having an insulation layer with a pitch of the size of the metalloprotein complex. The diameter of the metal atom aggregates used in the quantum device is 7 nm or smaller, and the pitch of the metalloprotein complex is preferably from 11 to 14 nm.
Claims4
A method of fabricating quantum dots, the method comprising:
- adsorbing a plurality of metalloprotein complexes onto an LB membrane developed on a surface of an aqueous solution to thereby array the metalloprotein complexes in a two-dimensional configuration on the LB membrane at regular intervals, each of the metalloprotein complexes comprising a protein and metal oxide particles contained in a core of the protein;
- placing the LB membrane having the metalloprotein complexes adsorbed in the two-dimensional configuration at regular intervals thereon on a substrate and burning out the proteins under an inert atmosphere that does not react with the substrate to thereby leave the metal oxide particles arrayed in a two-dimensional configuration at regular intervals on the substrate, the substrate being durable to a temperature higher than the burn-out temperature of the proteins and the substrate having an insulation layer or a semiconductor layer on a surface thereof;
- and
- reducing the metal oxide particles arrayed in the two-dimensional configuration at regular intervals on the insulation layer or the semiconductor layer to thereby obtain a plurality of metal atom aggregates arrayed in a two-dimensional configuration at regular intervals on the insulation layer or the semiconductor layer.
1 more element
A method of fabricating quantum dots, the method comprising:
- adsorbing a plurality of metalloprotein complexes onto an LB membrane developed on a surface of an aqueous solution to thereby array the metalloprotein complexes in a two-dimensional configuration on the LB membrane at regular intervals, each of the metalloprotein complexes comprising a protein and metal atom aggregates contained in a core of the protein;
- and
- placing the LB membrane having the metalloprotein complexes adsorbed in the two-dimensional configuration at regular intervals thereon on a substrate and burning out the proteins under an inert atmosphere that does not react with the substrate to thereby leave the metal atom aggregates arrayed in a two-dimensional configuration at regular intervals on the substrate, the substrate being durable to a temperature higher than the burn-out temperature of the proteins and the substrate having an insulation layer or a semiconductor layer on a surface thereof.
Dependencies are inferred from the claim text.