Skip to Main content Skip to Navigation
Journal articles

Thermoelectricity and thermodiffusion in charged colloids

Abstract : The Seebeck and Soret coefficients of ionically stabilized suspension of maghemite nanoparticles in dimethyl sulfoxide are experimentally studied as a function of nanoparticle volume fraction. In the presence of a temperature gradient, the charged colloidal nanoparticles experience both thermal drift due to their interactions with the solvent and electric forces proportional to the internal thermoelectric field. The resulting thermodiffusion of nanoparticles is observed through forced Rayleigh scattering measurements, while the thermoelectric field is accessed through voltage measurements in a thermocell. Both techniques provide independent estimates of nanoparticle’s entropy of transfer as high as 82 meV K$_{−1}$. Such a property may be used to improve the thermoelectric coefficients in liquid thermocells.
Document type :
Journal articles
Complete list of metadata

Cited literature [21 references]  Display  Hide  Download
Contributor : Dominique GIRARD Connect in order to contact the contributor
Submitted on : Wednesday, May 10, 2017 - 2:59:50 PM
Last modification on : Monday, December 13, 2021 - 9:14:38 AM
Long-term archiving on: : Friday, August 11, 2017 - 1:42:39 PM


Publisher files allowed on an open archive



B. T. Huang, M. Roger, M. Bonetti, T. J. Salez, C. Wiertel-Gasquet, et al.. Thermoelectricity and thermodiffusion in charged colloids. Journal of Chemical Physics, American Institute of Physics, 2015, 143, pp.054902. ⟨10.1063/1.4927665⟩. ⟨cea-01367117⟩



Record views


Files downloads