Patents Assigned to The United States of America as represented by the Administator of National Aeronatics and Space Adminstration
  • Patent number: 7507472
    Abstract: An electroactive material comprises multiple layers of electroactive composite with each layer having unique dielectric, electrical and mechanical properties that define an electromechanical operation thereof when affected by an external stimulus. For example, each layer can be (i) a 2-phase composite made from a polymer with polarizable moieties and an effective amount of carbon nanotubes incorporated in the polymer for a predetermined electomechanical operation, or (ii) a 3-phase composite having the elements of the 2-phase composite and further including a third component of micro-sized to nano-sized particles of an electroactive ceramic incorporated in the polymer matrix.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: March 24, 2009
    Assignee: The United States of America as represented by the Administator of National Aeronatics and Space Adminstration
    Inventors: Zoubeida Ounaies, Cheol Park, Joycelyn S. Harrison, Nancy M. Holloway, Gregory K. Draughon