Magnetically shielded conductor

• US 6,876,886 B1
• Filed: 08/26/2002
• Issued: 04/05/2005
• Est. Priority Date: 01/22/2002
• Status: Expired due to Fees

• Current Assignee: Biophan Technologies Incorporated
• Original Assignee: Nandset LLC
• Inventors: Wang, Xingwu
• Primary Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US10/229,183
• Time in Patent Office: 953 Days
• Field of Search: 607115-156, 600373-381, 606 13- 52, 174/36, 174/113.R, 174/102.SC, 174/102.P, 333/12, 333/243
• US Class Current: 607/119
• CPC Class Codes: A61N 1/086 Magnetic resonance imaging [MRI] compatible leads
• CPC Class Codes: A61N 1/3718 Monitoring of or protection against external electromagnetic fields or currents
• CPC Class Codes: B82Y 25/00 Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
• CPC Class Codes: H01B 11/10 Screens specially adapted for reducing interference from external sources
• CPC Class Codes: H01B 11/1083 the coating containing magnetic material
• CPC Class Codes: H01F 1/0063 in a non-magnetic matrix, e.g. granular solids granular films H01F10/007
• CPC Class Codes: H01F 10/007 ultrathin or granular films H01F10/005 and H01F10/3227 take precedence; applying ultrathin or granular layers to substrates H01F41/301
• CPC Class Codes: H01F 10/324 Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer

Abstract

A magnetically shielded conductor assembly containing a conductor disposed within an insulating matrix, and nanomagentic material and nanoelectrical material disposed around the conductor. The conductor has a resistivity at 20 degrees Centigrade of from about 1 to about 100 microohm-centimeters. The insulating matrix is composed of nano-sized particles having a maximum dimension of from about 10 to about 100 nanometers. The insulating matrix has a resistivity of from about 1,000,000,000 to about 10,000,000,000,000 ohm-centimeter. The nanomagnetic material has an average particle size of less than about 100 nanometers. The nanomagnetic material has a saturation magnetization of from about 200 to about 26,000 Gauss. The magnetically shielded conductor assembly is flexible, having a bend radius of less than 2 centimeters.

Claims

1. A magnetically shielded conductor assembly comprised of a conductor disposed within an insulating matrix, nanomagnetic material disposed around said conductor, and nanoelectrical material disposed around said conductor, provided that such nanomagnetic material is not contiguous with said conductor, and further provided that such nanoelectrical material is not contiguous with said conductor, wherein:

(a) said conductor has a resistivity of from about 1 to about 100 micro ohm-centimeters,

(b) said insulating matrix is comprised of nano-sized particles, wherein at least about 90 weight percent of said particles have a maximum dimension of from about 10 to about 100 nanometers;

(c) said insulating matrix has a resistivity of from about 1,000,000,000 to about 10,000,000,000,000 ohm-centimeter;

(d) said nanomagnetic material has an average particle size of less than about 100 nanometers;

(e) said nanomagnetic material has a saturation magnetization of from about 200 to about 26,000 Gauss and a thickness of less than about 2 microns;

(f) said nanoelectrical material has a resisitivity of from about 1.6 to about 100 microohm-centimeters; and

(g) said magnetically shielded conductor assembly is flexible, having a bend radius of less than 2 centimeters.

2. The magnetically shielded conductor assembly as recited in claim 1, wherein said magnetically shielded conductor assembly further comprises a layer comprised of said nanomagnetic material disposed around said conductor, and a layer of said nanoelectrical material disposed around said conductor.

3. The magnetically shielded conductor assembly as recited in claim 1, wherein disposed around said conductor is a layer comprised of said nanomagnetic material and said nanoelectrical material.

4. The magnetically shielded conductor assembly as recited in claim 1, wherein said nanoelectrical material is comprised of aluminum and iron.

5. The magnetically shielded conductor assembly as recited in claim 4, wherein said nanoelectrical material consists essentially of aluminum and iron.

6. The magnetically shielded conductor assembly as recited in claim 5, wherein at least 9 moles of aluminum are present for each mole of iron in said nanoelectrical material.

7. The magnetically shielded conductor assembly as recited in claim 1, wherein said conductor and said second conductor consists essentially of copper.

8. The magnetically shielded conductor assembly as recited in claim 1, wherein said nanomagnetic material is comprised of atoms of iron.

9. The magnetically shielded conductor assembly as recited in claim 1, wherein said nanomagnetic material is comprised of atoms of cobalt.

10. The magnetically shielded conductor assembly as recited in claim 1, wherein said nanomagnetic material is comprised of atoms of nickel.

11. The magnetically shielded conductor assembly as recited in claim 1, further comprising a power supply operatively connected to said conductor.

12. The magnetically shielded conductor assembly as recited in claim 11, wherein said power supply is magnetically shielded.

13. The magnetically shielded conductor assembly as recited in claim 12, wherein said power supply is coated with a layer of nanomagnetic particles.

14. The magnetically shielded conductor assembly as recited in claim 1, further comprising a load connected to said magnetically shielded conductor assembly.

15. The magnetically shielded conductor assembly as recited in claim 14, further comprising a controller connected to said load.

16. The magnetically shielded conductor assembly as recited in claim 15, wherein said controller is connected to said power supply.

17. The magnetically shielded conductor assembly as recited in claim 16, comprising means of delivering pulses of direct current from said power supply to said load.

18. The magnetically shielded conductor assembly as recited in claim 17, wherein said load is magnetically shielded.

19. The magnetically shielded conductor assembly as recited in claim 18, wherein said load is a pacemaker.