Patent ID: 7887689
Filing Date: 2011-02-15
Classification: B82Y,C25D

Abstract:
1. A method of attaching carbon nanotubes and/or nanowires onto a sharp tip by an electrophoresis process, the method comprising the successive steps of: providing an object with a sharp, pointed tip; forming a suspension containing at least one of a carbon nanotube or nanowire, wherein the suspension has a surface; immersing an electrode in the suspension; placing the sharp tip of the object perpendicular to and directly above the surface of the suspension; applying a voltage between the immersed electrode and the sharp tip; moving the sharp tip toward the surface of the suspension until electrical contact is established between the immersed electrode and the sharp tip; allowing current to pass between the immersed electrode and the sharp tip for a predetermined amount of time, wherein the carbon nanotube or nanowire attaches to the sharp tip and remains permanently attached after the application of voltage is discontinued; and raising the sharp tip above the surface of the suspension after expiration of the predetermined amount of time.