Compositions – Electrically conductive or emissive compositions – Elemental carbon containing
Reexamination Certificate
2005-03-03
2008-07-22
Kopec, Mark (Department: 1796)
Compositions
Electrically conductive or emissive compositions
Elemental carbon containing
C428S323000, C528S496000, C252S06290R, C252S500000, C310S319000
Reexamination Certificate
active
07402264
ABSTRACT:
An electroactive sensing or actuating material comprises a composite made from a polymer with polarizable moieties and an effective amount of carbon nanotubes incorporated in the polymer for a predetermined electomechanical operation of the composite when such composite is affected by an external stimulus. In another embodiment, the composite comprises a third component of micro-sized to nano-sized particles of an electroactive ceramic that is also incorporated in the polymer matrix. The method for making the three-phase composite comprises either incorporating the carbon nanotubes in the polymer matrix before incorporation of the particles of ceramic or mixing the carbon nanotubes and particles of ceramic together in a solution before incorporation in the polymer matrix.
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S. Courty, J., Mine, A.R. Tajbakhsh, and E.M. Terentjev “Nematic Elastomers with Aligned Carbon Nanotubes: New Electromechanical Actuators” Europhysics Letters, Dec. 1, 2003 64 (5) pp. 654-660.
Draughon Gregory K.
Harrison Joycelyn S.
Holloway Nancy M.
Ounaies Zoubeida
Park Cheol
Blackburn Linda B.
Gibbens Barry V.
Kopec Mark
Nguyen Khanh Tuan
The United States of America as represented by the Administrator
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