ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Alice Pelosse
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH – Christophe Gissinger (LPENS)
Thermoelectricity at liquid interfaces
Thermoelectricity refers to the direct conversion of a temperature difference into an electric current (Seebeck effect), and vice versa. In conventional solid-state devices, this mechanism is generally limited by the essentially linear relationship between the generated current and the applied temperature difference, as well as by the electronic properties of semiconductor materials, which constrain the maximum size of such systems.
In this seminar, I will present the experimental evidence of a new thermoelectric mechanism occurring at the interface between two electrically conducting fluids subjected to a thermal gradient. This phenomenon results from the nonlinear coupling between the Seebeck effect and turbulent thermal convection developing in the fluid layers. The experiments reveal the spontaneous emergence of intense electric current loops, with current densities about one order of magnitude larger than those found in conventional solid-state thermoelectric devices.
These results illustrate how hydrodynamics can modify the Seebeck effect and open the way to a new class of liquid thermoelectric devices, with potential applications in high-power electronics cooling and energy storage technologies.
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Recent seminars (4)
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Séminaire PMMH — Sander Huisman (U. Twente, the Netherlands)
Vendredi 10 juillet de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH — Dmitry Kolomenskiy (Skolkovo Institute of Science and Technology, Russia)
Vendredi 26 juin de 11h00 à 12h00 - Salle réunion PMMH 1
Flight mechanics of the smallest insects
Microinsects with body sizes below 2 millimetres evolved from larger ancestors through natural selection to occupy specialized ecological niches. During miniaturization, many retained their major organs and functions, including the ability to fly. Moreover, microinsects from different orders convergently evolved (…) -
Séminaire PMMH - Carlos Málaga Iguiñiz (UNAM, Mexico)
Vendredi 5 juin de 11h00 à 12h00 - Salle réunion PMMH 1
The Lattice Boltzmann Method
The lattice-Boltzmann method is a relatively new numerical scheme for fluid dynamics simulations. It is a non-conventional method in the sense that it is not built around the equations of fluid motion. Instead, it computes solutions to the Navier-Stokes equations indirectly based on the Boltzmann equation that (…) -
Séminaire PMMH - Vladimir Gligorov (LPNHE, IN2P3))
Vendredi 22 mai de 11h00 à 12h00 - Salle réunion PMMH 1
The conception and performance of real-time analysis @ the LHCb experiment
The real-time processing of data created by the Large Hadron Collider's (LHC) experiments, amounting to over 10% of worldwide internet traffic, is one of the greatest computing challenges ever attempted. I will discuss the concrete real-time processing challenges faced by one of the LHC's main experiments, LHCb, (…)
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
