Fluctuation-Induced Couplings at the Solid-Liquid Interface
Event details
| Date | 11.12.2024 |
| Hour | 11:30 › 12:30 |
| Speaker | Baptiste Coquinot, Ph.D., Institute of Science and Technology Austria (ISTA), Vienna-Klosterneuburg (AT) |
| Location | Online |
| Category | Conferences - Seminars |
| Event Language | English |
BIOENGINEERING SEMINAR
Abstract:
This presentation explores couplings at the solid-liquid interface, arising from fluctuations in the microscopic degrees of freedom of both the solid and the liquid. We describe in which contexts these couplings dominate solid-liquid friction, then impacting hydrodynamics at the nanoscale, and how they can be used to engineer the friction coefficient.
We show that the solid modes are impacted by a flow at their surface, driving them out of equilibrium. This modifies the friction, so that the study of liquid dynamics now requires describing the dynamics of the solid to which it is coupled. In particular, it becomes possible to engineer the friction by changing the electronic properties of the solid. Moreover, it also becomes possible to transfer a flow throughout a solid and thus to make flows forbidden by standard hydrodynamics.
Finally, we prove that it is possible to convert the friction force into an electrical power, thus using these couplings to make a promising hydroelectric generator.
Bio:
Baptiste Coquinot obtained a double master degree in fundamental physics (Ecole Normale Supérieure-PSL University, Paris, France) and fundamental mathematics (Sorbonne Université, Paris, France) in 2021. As a theoretical physicists concerned about having an impact on society, he joined Lydéric Bocquet at Micromégas — a lab of nanofluidics going from theory to innovation. Baptiste Coquinot completed his PhD in nanofluidics, funded by the Foundation CFM for Research, in 2024. He then obtained a grant from the NOMIS Foundation to join the Institute of Science and Technology Austria (ISTA) as a postdoctoral fellow. there, he will work closely with the research groups of Mikhail Lemeshko (Theoretical Atomic, Molecular, and Optical Physics), but also with external collaborators like Nikita Kavokine (Quantum Plumbing Lab, EPFL). As a NOMIS Fellow, he will turn to quantum liquids. He will explore the nonequilibrium properties of superfluid helium within nanoconfined environments, combining recent advances in superfluidity and nanofluidic research.
Zoom link for attending remotely: https://epfl.zoom.us/j/65073435972
Abstract:
This presentation explores couplings at the solid-liquid interface, arising from fluctuations in the microscopic degrees of freedom of both the solid and the liquid. We describe in which contexts these couplings dominate solid-liquid friction, then impacting hydrodynamics at the nanoscale, and how they can be used to engineer the friction coefficient.
We show that the solid modes are impacted by a flow at their surface, driving them out of equilibrium. This modifies the friction, so that the study of liquid dynamics now requires describing the dynamics of the solid to which it is coupled. In particular, it becomes possible to engineer the friction by changing the electronic properties of the solid. Moreover, it also becomes possible to transfer a flow throughout a solid and thus to make flows forbidden by standard hydrodynamics.
Finally, we prove that it is possible to convert the friction force into an electrical power, thus using these couplings to make a promising hydroelectric generator.
Bio:
Baptiste Coquinot obtained a double master degree in fundamental physics (Ecole Normale Supérieure-PSL University, Paris, France) and fundamental mathematics (Sorbonne Université, Paris, France) in 2021. As a theoretical physicists concerned about having an impact on society, he joined Lydéric Bocquet at Micromégas — a lab of nanofluidics going from theory to innovation. Baptiste Coquinot completed his PhD in nanofluidics, funded by the Foundation CFM for Research, in 2024. He then obtained a grant from the NOMIS Foundation to join the Institute of Science and Technology Austria (ISTA) as a postdoctoral fellow. there, he will work closely with the research groups of Mikhail Lemeshko (Theoretical Atomic, Molecular, and Optical Physics), but also with external collaborators like Nikita Kavokine (Quantum Plumbing Lab, EPFL). As a NOMIS Fellow, he will turn to quantum liquids. He will explore the nonequilibrium properties of superfluid helium within nanoconfined environments, combining recent advances in superfluidity and nanofluidic research.
Zoom link for attending remotely: https://epfl.zoom.us/j/65073435972
Practical information
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- Free