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US 2014/0227477 A1Published application
Methods for Reducing Thermal Resistance of Carbon Nanotube Arrays or Sheets
AssigneeGeorgia Tech Research Corporation
InventorsBaratunde Cola, Virendra Singh, Thomas L. Bougher, John H. Taphouse
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Abstract
Carbon nanotube (CNT) forests or sheets coated and/or bonded at room temperature with one or more coatings were measured to produce thermal resistances that are on par with conventional metallic solders. These results were achieved by reducing the high contact resistance at CNT tips and/or sidewalls, which has encumbered the development of high-performance thermal interface materials based on CNTs. Resistances as low as 4.9±0.3 mm2-K/W were achieved for the entire polymer-coated CNT interface structure.
Claims28
A coated array or sheet of carbon nanotubes comprising
- an array comprising an inert substrate and a plurality of vertically aligned carbon nanotubes attached to or supported by the inert substrate, or
- a sheet comprising a plurality of carbon nanotubes aligned in plane with the sheet surface,
- and an effective amount of a coating material to reduce the thermal resistance of the coated array or sheet compared to an uncoated array or sheet when measured by the photoacoustic method.
Dependencies are inferred from the claim text.