TY - GEN
T1 - In-plane thermaland thermoelectric properties of polycrystalline highly preferred orientation [(W)x(WSE2)y]Z superlattice thin films
AU - Mavrokefalos, Anastassios
AU - Nguyen, Ngoc T.
AU - Pettes, Michael T.
AU - Johnson, David C.
AU - Shi, Li
PY - 2007/12/1
Y1 - 2007/12/1
N2 - It was recently found by using the time domain thermal reflectance method that polycrystalline highly preferred orientation WSe2 and [(W) x(WSe2)y]z superlattice films possess extremely low cross-plane thermal conductivity, which is desirable for thermal insulation and thermoelectric energy conversion applications. However, it is difficult to obtain the in-plane thermal conductivity by using the laser reflectance or the 3-ω method. Here we employ a suspended microdevice developed for measuring thermoelectric properties of individual nanowires and nanofilms to obtain the in-plane thermal conductivity, electrical conductivity, and Seebeck coefficient of [(W)x(WSe2)y] z superlattice films. The measurement results show that the in-plane thermal conductivities of these films are much higher than the cross-plane values, making the thermal conductivity of the films highly anisotropic. Copyright © 2007 by ASME.
AB - It was recently found by using the time domain thermal reflectance method that polycrystalline highly preferred orientation WSe2 and [(W) x(WSe2)y]z superlattice films possess extremely low cross-plane thermal conductivity, which is desirable for thermal insulation and thermoelectric energy conversion applications. However, it is difficult to obtain the in-plane thermal conductivity by using the laser reflectance or the 3-ω method. Here we employ a suspended microdevice developed for measuring thermoelectric properties of individual nanowires and nanofilms to obtain the in-plane thermal conductivity, electrical conductivity, and Seebeck coefficient of [(W)x(WSe2)y] z superlattice films. The measurement results show that the in-plane thermal conductivities of these films are much higher than the cross-plane values, making the thermal conductivity of the films highly anisotropic. Copyright © 2007 by ASME.
UR - https://www.scopus.com/pages/publications/43449093747
U2 - 10.1115/HT2007-32841
DO - 10.1115/HT2007-32841
M3 - Conference contribution
T3 - 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat
Transfer Conference - HT 2007
SP - 835
EP - 838
BT - 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007
T2 - 2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007
Y2 - 1 December 2007
ER -