TY - JOUR
T1 - Study of thermal diffusivity of nanofluids with bimetallic nanoparticles with Au(core)/Ag(shell) structure
AU - Gutierrez Fuentes, R.
AU - Pescador Rojas, J. A.
AU - Jiménez-Pérez, J. L.
AU - Sanchez Ramirez, J. F.
AU - Cruz-Orea, A.
AU - Mendoza-Alvarez, J. G.
N1 - Funding Information:
The authors are thankful to the Mexican Agencies, CONACYT, COFAA-IPN, and CGPI-IPN for financial support of this work.
PY - 2008/11/30
Y1 - 2008/11/30
N2 - The thermal diffusivity of Au/Ag nanoparticles with core/shell structure, at different compositions (Au/Ag = 3/1, 1/1, 1/3, 1/6), was measured by using the mismatched mode of the dual-beam thermal lens (TL) technique. This study determines the effect of the bimetallic composition on the thermal diffusivity of the nanofluids. In these results we find a lineal increment of the nanofluid it thermal diffusivity when the Ag shell thickness is increased. Our results show that the nanoparticle structure is an important parameter to improve the heat transport in composites and nanofluids. These results could have importance for applications in therapies and photothermal deliberation of drugs. Complementary measurements with UV-vis spectroscopy and TEM, were used to characterize the Au(core)/Ag(shell) nanoparticles.
AB - The thermal diffusivity of Au/Ag nanoparticles with core/shell structure, at different compositions (Au/Ag = 3/1, 1/1, 1/3, 1/6), was measured by using the mismatched mode of the dual-beam thermal lens (TL) technique. This study determines the effect of the bimetallic composition on the thermal diffusivity of the nanofluids. In these results we find a lineal increment of the nanofluid it thermal diffusivity when the Ag shell thickness is increased. Our results show that the nanoparticle structure is an important parameter to improve the heat transport in composites and nanofluids. These results could have importance for applications in therapies and photothermal deliberation of drugs. Complementary measurements with UV-vis spectroscopy and TEM, were used to characterize the Au(core)/Ag(shell) nanoparticles.
KW - Nanoparticles
KW - Thermal properties of small particle
KW - Transmission electron microscopy (TEM)
UR - http://www.scopus.com/inward/record.url?scp=55649115103&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2008.07.023
DO - 10.1016/j.apsusc.2008.07.023
M3 - Artículo
SN - 0169-4332
VL - 255
SP - 781
EP - 783
JO - Applied Surface Science
JF - Applied Surface Science
IS - 3
ER -