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2. Feb 2024

From Electro-Fluidic Coupling to Friction Engineering: electric current generation and flow tunnelling

Baptiste Coquinot (ENS Paris)

Datum: 2. February 2024 | 13:00 – 14:15
Sprecher: Baptiste Coquinot, ENS Paris
Veranstaltungsort: Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101)
Sprache: Englisch

An electronic current driven through a conductor can induce a current in another conductor through the famous Coulomb drag effect. Similar phenomena have been reported at the interface between a moving fluid and a conductor, but their interpretation has remained elusive. I will present our recent theoretical work, which predicts that a globally neutral liquid can generate an electronic current in the solid wall along which it flows [1], building on the idea of solid-liquid quantum friction [2]. This hydrodynamic Coulomb drag originates from both the Coulomb interactions between the liquids charge fluctuations and the solids charge carriers, and the liquid-electron interaction mediated by the solids phonons, consistently with experimental observations [3]. Our results provide a roadmap for controlling nanoscale liquid flows at the quantum level. In particular, we predict a fluidic equivalent of electron tunnelling, termed flow tunnelling: a flowing liquid may transfer momentum to another liquid through a solid wall. We directly observe this phenomenon in semi-classical molecular dynamics simulations, paving the way to a wealth of nanofluidic applications inspired by condensed matter physics.

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Datum:
2. February 2024
13:00 – 14:15

Sprecher:
Baptiste Coquinot, ENS Paris

Veranstaltungsort:
Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101)

Sprache:
Englisch

Ansprechpartner:

Boukalova Darina

Email:
dboukalo@ist.ac.at

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