Patents by Inventor P. Terry Murray

P. Terry Murray has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6676811
    Abstract: A method of depositing nanoparticles for flux pinning into a superconducting material is described. According to the method of the present invention, a target made of superconducting material and a substrate are placed in the deposition chamber of a pulsed laser deposition apparatus. A first, moderate vacuum level is established in the chamber and the target is irradiated with light from a pulsed, high energy laser. By virtue of the moderate vacuum level, the material ejected from the target is slowed sufficiently to agglomerate into nanoparticles having the same composition as the target material. These nanoparticles are deposited upon the substrate. A uniform layer of superconducting material is deposited on the substrate by evacuating the deposition chamber to a second, high vacuum level and performing the pulsed laser deposition process again. The nanoparticles thus deposited within the superconducting material act as a flux pinning mechanism.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: January 13, 2004
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Paul N. Barnes, P. Terry Murray