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Soret Effect in Interacting Micellar Solutions
Abstract
We show that electrostatic effects have a dramatic influence on thermal diffusion of charged micelles. In the dilute regime, the Soret coefficient strongly decreases with the solution ionic strength, and scales as the square of the Debye-Hückel length. Yet, collective effects yield a reversed scenario even at fairly low surfactant concentration. We find that single-particle behavior can be explained using an interfacial tension mechanism proposed by Ruckenstein, which also fairly accounts for collective effects and opens the way to a general picture of thermal diffusion in disperse systems.
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Citations
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Metadata
- Authors
- Piazza, R., & Guarino, A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2002-05-02
- Volume
- 88
- Issue
- 20
- Pages
- 208302-208302
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1988281213
- Cited by
- 216
- References
- 0
- FWCI
- 14.48
- Type
- journal article
- Language
- en
- Open access
- closed
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