Journal of Thermal Analysis and Calorimetry

, Volume 114, Issue 2, pp 557–564

Thermo-optical properties of silver and gold nanofluids

  • Lyane M. Moreira
  • E. A. Carvalho
  • M. J. V. Bell
  • V. Anjos
  • A. C. Sant’Ana
  • Ana Paula P. Alves
  • B. Fragneaud
  • L. A. Sena
  • B. S. Archanjo
  • C. A. Achete
Article

DOI: 10.1007/s10973-013-3021-7

Cite this article as:
Moreira, L.M., Carvalho, E.A., Bell, M.J.V. et al. J Therm Anal Calorim (2013) 114: 557. doi:10.1007/s10973-013-3021-7

Abstract

This work focuses on the study of thermal diffusivity and physical properties of nanofluids with very low concentrations of silver or gold nanoparticles. Thermal measurements were performed by means of thermal lens spectroscopy in the dual beam configuration. Improvements of 20 and 16 % in the thermal diffusivity were observed for silver and gold nanofluids, respectively, in comparison with pure water. The estimation of the size distribution of the metallic nanoparticles was obtained through the fitting of the extinction spectra via Mie theory and images of field emission gun scanning electron microscopy.

Keywords

NanofluidsThermal diffusivityMie scatteringThermal lensGoldSilver

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  • Lyane M. Moreira
    • 1
  • E. A. Carvalho
    • 1
  • M. J. V. Bell
    • 1
  • V. Anjos
    • 1
  • A. C. Sant’Ana
    • 2
  • Ana Paula P. Alves
    • 2
  • B. Fragneaud
    • 3
  • L. A. Sena
    • 3
  • B. S. Archanjo
    • 3
  • C. A. Achete
    • 3
    • 4
  1. 1.Laboratório de Espectroscopia de Materiais, Departamento de Física, Instituto de Ciências ExatasUniversidade Federal de Juiz de ForaJuiz de ForaBrazil
  2. 2.Departamento de Química, Instituto de Ciências ExatasUniversidade Federal de Juiz de ForaJuiz de ForaBrazil
  3. 3.Divisão de Metrologia de Materiais (DIMAT)Instituto Nacional de Metrologia, Normalização e Qualidade IndustrialDuque de CaxiasBrazil
  4. 4.Engenharia Metalúrgica e de MateriaisUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil