Magnetic trap for cylindrical diamagnetic materials
View Patent ↗A method of arranging a diamagnetic rod includes levitating a diamagnetic rod above a contact line at which a first magnet contacts a second magnet, the first magnet and the second magnet having diametric magnetization in a direction perpendicular to the contact line.
1. A method of arranging a diamagnetic rod comprising:
levitating a diamagnetic rod above a contact line at which a first magnet contacts a second magnet, the first magnet and the second magnet having diametric magnetization in a direction perpendicular to the contact line, and the first magnet and the second magnet making up one magnetic trap among an array of magnetic traps mounted on a template substrate;
depositing a plurality of diamagnetic rods onto the array of magnetic traps;
capturing, by the array of magnetic traps, a number of captured diamagnetic rods, among the plurality of diamagnetic rods, corresponding to a number of magnetic traps in the array of magnetic traps;
cleaning the template substrate to remove from the template substrate any un-captured diamagnetic rods among the plurality of diamagnetic rods; and
bringing the captured diamagnetic rods into contact with a target substrate to form wiring on the target substrate.
2. The method of claim 1 , wherein the plurality of diamagnetic rods are cylinders.
3. The method of claim 1 , wherein the first magnet and the second magnet have flat faces at each end of the first magnet and the second magnet.
4. The method of claim 1 , wherein the first magnet and the second magnet have a uniform shape along longitudinal directions of the first magnet and the second magnet, respectively.
5. The method of claim 1 , wherein the first magnet and second magnet have circular cross-sectional shapes.
6. The method of claim 1 , wherein the first magnet and second magnet have diamond cross-sectional shapes.
7. The method of claim 1 , wherein the plurality of diamagnetic rods are one of semiconductor nanowires and carbon nanotubes.
8. The method of claim 7 , wherein the plurality of diamagnetic rods are carbon nanotubes wrapped in a surfactant.
9. The method of claim 1 , wherein depositing the plurality of diamagnetic rods onto the array of magnetic traps includes dipping the template substrate into a solution including the plurality of diamagnetic rods.
10. The method of claim 1 , wherein depositing the plurality of diamagnetic rods onto the array of magnetic traps includes applying a solution including the diamagnetic rods to the template substrate.