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Nanoscale Seebeck effect at hot metal nanostructures
| hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
| dc.contributor.author | LY, Aboubakry | |
| hal.structure.identifier | Max-Planck-Institut für Intelligente Systeme | |
| hal.structure.identifier | Institute fürTheoretische Physik IV | |
| dc.contributor.author | MAJEE, Arghya | |
| hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
| dc.contributor.author | WÜRGER, Alois | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 1367-2630 | |
| dc.description.abstractEn | We theoretically study the Seebeck effect in the vicinity of a heated metal nanostructure, such as the cap of an active Janus colloid in an electrolyte, or gold-coated interfaces in optofluidic devices. The thermocharge accumulated at the surface varies with the local temperature, thus modulating the diffuse part of the electric double layer. On a conducting surface with non-uniform temperature, the isopotential condition imposes a significant polarization charge within the metal. Surprisingly, this does not affect the slip velocity, which takes the same value on insulating and conducting surfaces. Our results for specific-ion effects agree qualitatively with recent observations for Janus colloids in different electrolyte solutions. Comparing the thermal, hydrodynamic, and ion diffusion time scales, we expect a rich transient behavior at the onset of thermally powered swimming, extending to microseconds after switching on the heating. | |
| dc.language.iso | en | |
| dc.publisher | Institute of Physics: Open Access Journals | |
| dc.title.en | Nanoscale Seebeck effect at hot metal nanostructures | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/1367-2630/aaa266 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft] | |
| bordeaux.journal | New Journal of Physics | |
| bordeaux.page | 025001 | |
| bordeaux.volume | 20 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01699638 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01699638v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Journal%20of%20Physics&rft.date=2018&rft.volume=20&rft.spage=025001&rft.epage=025001&rft.eissn=1367-2630&rft.issn=1367-2630&rft.au=LY,%20Aboubakry&MAJEE,%20Arghya&W%C3%9CRGER,%20Alois&rft.genre=article |
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