Claims
- 1. A laminar layered structure comprising:
a) a substrate having a surface, b) a lattice layer in the form of a lattice disposed upon said surface of said substrate, said lattice layer comprising DNA segments arranged to form cells of said lattice layer, c) at least one particle disposed within each cell.
- 2. A laminar layered structure as set forth in claim 1, each cell having a diameter not exceeding 100 nanometers, said particles within said cells having a substantially uniform diameter not exceeding 50 nanometers, said laminar layered structure further comprising:
d) an adherent coating disposed over said lattice layer and over said particles to maintain each said particle within a cell of said lattice.
- 4. A laminar layered structure as set forth in claim 2, each cell having a diameter not exceeding 100 nanometers, said particles having a substantially uniform diameter not exceeding 20 nanometers.
- 5. A laminar layered structure as set forth in claim 2 wherein said particles comprise a magnetic material selected from the group consisting of elements Co, Fe, Ni, Mn, Sm, Nd, Pr, Pt, Gd, an intermetallic compound of the aforesaid elements, a binary alloy of said elements, a ternary alloy of said elements, an oxide of Fe further comprising at least one of said elements other than Fe, barium ferrite, and strontium ferrite.
- 6. A laminar layered structure as set forth in claim 5 wherein each cell contains a plurality of said particles, said plurality being the square of an integer.
- 7. A laminar layered structure as set forth in claim 1, wherein each cell contains a plurality of said particles, wherein each particle comprises a material having a selected degree of electrical conductivity, and wherein said particles have a substantially uniform diameter not exceeding 50 nm.
- 8. A laminar layered structure as set forth in claim 7 wherein said material has a high degree of electrical conductivity and wherein said particles have a substantially uniform diameter not exceeding 50 nm.
- 9. A laminar layered structure as set forth in claim 2, said particles comprising a semiconductor material capable of emitting electromagnetic radiation, wherein said particles have a substantially uniform diameter not exceeding 50 nm.
- 10. A laminar layered structure as set forth in claim 2, said particles comprising a semiconductor material capable of sensing electromagnetic radiation, wherein said particles have a substantially uniform diameter not exceeding 50 nm.
- 11. A laminar layered structure as set forth in claim 1 and comprising an affinity layer disposed in a selected pattern over at least part of said surface of said substrate, said affinity layer being composed of an affinity material adapted to preferentially attract and retain said particles in said selected pattern over said surface.
- 12. A laminar layered structure as set forth in claim 11, wherein said affinity material is comprised of bi-functional molecules of the form X—R—Y, wherein R is selected from hydrocarbon and fluorocarbon chains of between 3 and 22 carbon atoms, and X and Y are selected from:
sulfonic acids R—SO2OH sulfinic acids R—SOOH phosphinic acids R2POOH phosphonic acids R—OPO(OH)2 carboxylic acids R—COOH thiols R—SH trismethoxysilane R—Si(OCH3)3 trisethoxysilane R—Si(OCH2CH3)3 trichlorosilane R—SiCl3
- 13. A method of forming a laminar layered structure upon a surface of a substrate comprising the steps of:
a) coating said substrate with an affinity coating, b) preparing a solution of a selected group of four DNA segments each formed from a base molecules of adenine (A), guanine (G), cytosine (C), and thymine (T), c) bringing said surface into contact with said solution to thereby apply a layer of said solution to said surface, d) drying said layer to leave a lattice layer of cells formed by DNA segments upon said surface, e) preparing a liquid dispersion of inorganic particles coated with an organic stabilizer material, said inorganic particles having a substantially uniform diameter not exceeding 50 nanometers. f) applying said liquid dispersion to said surface of said substrate to cause at least one of said inorganic particles coated with said organic stabilizer material to adhere to said surface within each cell of said lattice layer, said particles being maintained in spaced-apart relationship upon said surface by said organic stabilizer material.
- 14. A method as set forth in claim 13, comprising the further steps of:
g) removing said organic stabilizer material, and h) depositing an adherent coating over said particles to maintain them in said substantially uniformly spaced-apart relationship.
- 15. A method as set forth in claim 14, wherein step (g) of removing said organic stabilizer material is carried out by evaporation using at least one of heating, dry etching, and vacuum.
- 16. A method as set forth in claim 13, wherein said affinity coating is comprised of bi-functional molecules of the form X—R—Y, wherein R is selected from hydrocarbon and fluorocarbon chains of between 3 and 22 carbon atoms, and X and Y are selected from:
sulfonic acids R—SO2OH sulfinic acids R—SOOH phosphinic acids R2POOH phosphonic acids R—OPO(OH)2 carboxylic acids R—COOH thiols R—SH trismethoxysilane R—Si(OCH3)3 trisethoxysilane R—Si(OCH2CH3)3 trichlorosilane R—SiCl3
- 17. A method as set forth in claim 13, said organic stabilizer material comprising a long chain organic acid of the form R—X, where R is a member selected from the group consisting of 1) a hydrocarbon chain in straight or branched formation, said hydrocarbon chain comprising 6 to 22 carbon atoms, and 2) a fluorocarbon chain in straight or branched formation, said fluorocarbon chain comprising 6 to 22 carbon atoms, and where X is selected from carboxylic acid, phosphonic acid, phosphinic acid, sulfonic acid, sulfinic acids, and thiol.
- 18. A method as set forth in claim 13, where said organic stabilizer material comprises oleic acid.
- 19. A method as set forth in claim 14, or 18, said particles comprising a magnetic material selected from the group consisting of elements Co, Fe, Ni, Mn, Sm, Nd, Pr, Pt, Gd, an intermetallic compound of the aforesaid elements, a binary alloy of said elements, a ternary alloy of said elements, an oxide of Fe further comprising at least one of said elements other than Fe, barium ferrite, and strontium ferrite, said adherent coating comprising an abrasion-resistant material selected from the group consisting of diamond-like-carbon, amorphous carbon, amorphous silicon, aluminum oxide, and silicon oxide.
- 20. A method as set forth in claim 13 or 14, wherein said particles comprise a semiconductor material.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is related to application Ser. No. ______ entitled “METHOD OF PRODUCING NANOPARTICLES OF TRANSITION METALS”, IBM Docket YO9-98-169, filed on the same date herewith, by Christopher B. Murray and Shouheng Sun, which application is incorporated herein by reference.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09127452 |
Jul 1998 |
US |
Child |
09733968 |
Dec 2000 |
US |