Magnetic trap for cylindrical diamagnetic materials

Patent metadata

Field	Value
Publication number	US-9263669-B2
Application number	US-201414537060-A
Country	US
Kind code	B2
Filing date	Nov 10, 2014
Priority date	Mar 13, 2013
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A system for self-aligning diamagnetic materials includes first and second magnets contacting each other along a contact line and having a diametric magnetization perpendicular to the contact line and a diamagnetic rod positioned to levitate above the contact line of the first and second magnets.

First claim

What is claimed is:

1. A system for self-aligning diamagnetic materials comprising:
first and second magnets contacting each other along a contact line and having a diametric magnetization perpendicular to the contact line; and
a diamagnetic rod positioned to levitate above the contact line of the first and second magnets, and positioned against a target substrate such that wiring is formed thereon,
wherein the first magnet and the second magnet form a magnetic trap among a plurality of magnetic traps mounted on a template substrate, the plurality of magnetic traps configured to retain a number of captured diamagnetic rods, among the plurality of diamagnetic rods, corresponding to a number of magnetic traps among the plurality of the magnetic traps,
wherein an oscillation of the trapped rod along the longitudinal axis measures a magnetic susceptibility of the trapped diamagnetic rods, and wherein the magnetic susceptibility of the trapped diamagnetic rods is based on a magnetic field of a single cylindrical diametric.

2. The system of claim 1 , wherein the diamagnetic rod has a length between around ten percent and eighty percent of a length of the first and second magnets.

3. The system of claim 1 , wherein the first and second magnets are symmetrical with respect to a first vertical plane along the contact line.

4. The system of claim 1 , wherein the first and second magnets have a uniform shape in a longitudinal direction parallel to the contact line.

5. The system of claim 1 , wherein the first and second magnets are ferromagnetic.

6. The system of claim 1 , wherein the first and second magnets are cylinders.

7. The system of claim 1 , wherein the first and second magnets have triangular shapes above a horizontal plane including the contact line.

8. The system of claim 1 , wherein the diamagnetic rod is trapped at a center of a magnetic trap in a direction extending along a longitudinal axis.

9. The system of claim 1 , wherein each magnetic trap among the plurality of magnetic traps includes a first magnet and a second magnet, the plurality of magnetic traps configured to capture a respective plurality of diamagnetic rods in a formation corresponding to a predetermined arrangement of wiring on a semiconductor substrate.

Assignees

• IBM

Inventors

• Cao Qing
• Gunawan Oki

Classifications

• H10P74/20

  characterised by the properties tested or measured, e.g. structural or electrical properties · CPC title

• H10P14/40

  of conductive or resistive materials · CPC title

• H10W20/0554

  of nanotubes or nanowires · CPC title

• H10W20/4462

  Carbon or carbon-containing materials, e.g. graphene · CPC title

• H10W20/069

  by forming self-aligned vias or self-aligned contact plugs · CPC title