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Updated: Jul 15, 2026

Synthesis and Characterization of Multi-Modal Phase-Change Porphyrin Droplets
Published on: October 15, 2021
Thermophoresis of microemulsion droplets: size dependence of the Soret effect
Daniele Vigolo1, Giovanni Brambilla, Roberto Piazza
1CSGI, Politecnico di Milano, Dipartimento di Ingegneria Nucleare, via Ponzio 34/3, 20133 Milan, Italy.
Abstract:
Thermophoresis, akin to thermal diffusion in simple fluid mixtures, consists of particle drift induced by a temperature gradient. Notwithstanding its practical interest, the dependence of thermophoretic effects on particle size R is still theoretically and experimentally debated. By performing measurements of water-in-oil microemulsion droplets with tunable size, we show that the thermal diffusion coefficient, at least for a suspension of small particles in a nonpolar solvent, does not appreciably depend on R .
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