TY - CPAPER KW - Thermal conductivity KW - Thermal diffusivity KW - Scattering KW - Nanowires KW - Composite materials KW - Nanocomposites KW - Phonons KW - Predictive models KW - Aligned microfibers KW - Aligned nanofiber KW - Aluminium compounds KW - Analytical model KW - Analytical models KW - Bismuth compounds KW - Boltzmann equation KW - Boltzmann transport equation KW - Fiber interface KW - Fibre reinforced composites KW - Nanofiber-based nanocomposite KW - Numerical models KW - Phonon dispersion relations KW - Phonons scattering KW - Tellurium compounds KW - Wires AU - Ravi S Prasher AU - S Sinha AB -

Two-dimensional composite materials made from aligned nano- and micro-fibers and wires hold great promise for various applications. We develop an analytical model for the thermal conductivity in the longitudinal direction of these composites by solving the phonon Boltzmann transport equation. The analytical model agrees well with a recently reported numerical model. The solution of Boltzmann transport equation shows that the scattering of phonons in the host medium at the fiber interface reduces the thermal conductivity of the host medium. Finally we show that the model predicts the data on the thermal diffusivity of bismuth-telluride nanowire/alumina composites reasonably

BT - Thermal and Thermomechanical Proceedings 10th Intersociety Conference on Phenomena in Electronics Systems, 2006. ITHERM 2006. DA - 07/2006 DO - 10.1109/ITHERM.2006.1645488 LA - eng N2 -

Two-dimensional composite materials made from aligned nano- and micro-fibers and wires hold great promise for various applications. We develop an analytical model for the thermal conductivity in the longitudinal direction of these composites by solving the phonon Boltzmann transport equation. The analytical model agrees well with a recently reported numerical model. The solution of Boltzmann transport equation shows that the scattering of phonons in the host medium at the fiber interface reduces the thermal conductivity of the host medium. Finally we show that the model predicts the data on the thermal diffusivity of bismuth-telluride nanowire/alumina composites reasonably

PY - 2006 EP - 12 pp.–1256 T2 - Thermal and Thermomechanical Proceedings 10th Intersociety Conference on Phenomena in Electronics Systems, 2006. ITHERM 2006. T3 - Thermal and Thermomechanical - 10th Intersociety Conference on Phenomena in Electronics Systems, 2006. ITHERM 2006. TI - Modeling of thermal conductivity of nanofiber-based nanocomposite ER -