Method And Apparatus For Evaluation And Improvement Of Mechanical And Thermal Properties Of Cnt/cnf Arrays

  • Published: Apr 24, 2008
  • Earliest Priority: Oct 24 2006
  • Family: 3
  • Cited Works: 0
  • Cited by: 15
  • Cites: 99
  • Additional Info: Full text
Abstract

A method and apparatus for the evaluation and improvement of the mechanical and thermal properties of carbon-nanotube (CNT) and carbon nanofiber (CNF) arrays grown on a substrate is disclosed. The Young's modulus of a CNT/CNF material is measured by applying an axial compressive force on the CNT/CNF array and measuring the applied forces and the induced displacements. Also disclosed are the evaluation of the nonlinear stress-strain relationship of the CNT/CNF material, increasing of the Young's modulus and decreasing the thermal resistance by application of a compressive load, the application of rapid thermal annealing to improve the quality of the CNT/CNF material and to reduce the interfacial thermal resistance, improvement of the bonding strength of the CNT/CNF array to a substrate, evaluation of the bonding strength of the CNT/CNF array to a substrate, evaluation of the shearing force at failure, and an analytical stress model that enables one to predict the interfacial shearing stress from the measured force.


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Document History
  • Publication: Apr 24, 2008
  • Application: Dec 29, 2006
    US US 61844106 A
  • Priority: Dec 29, 2006
    US US 61844106 A
  • Priority: Oct 24, 2006
    US US 86266406 P

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