Stéphan Fauve Explained

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Stéphan Fauve (born 20 December 1955 in Paris) is a French physicist. He is a professor at the École normale supérieure (ENS) in Paris, a member of the ENS Physics Laboratory.

Biography

Stéphan Fauve, is a graduate of the École normale supérieure de Saint-Cloud (1976–1980), agrégé de sciences physiques (1979) and docteur ès sciences (1984).

After defending his thesis in 1984 under the direction of Albert Libchaber as a preparatory associate at the École normale supérieure, Stephan Fauve was successively Professor at the École normale supérieure de Lyon (1987–1997), then at the ENS in Paris since 1997.[1] He is a member of the French Academy of Sciences, Physics section.

Scientific work

Stéphan Fauve's work has focused mainly on non-linear physics. His thesis work focused on the study of various scenarios of transition to chaos, in particular the measurement of critical exponents associated with the cascade of period doubling.[2] He then carried out the first experiment to highlight the phenomenon of stochastic resonance.[3] He was one of the founders of the physics laboratory of ENS-Lyon, initiating there the study of various research fields, such as dissipative structures generated by instability,[4] granular media,[5] [6] sound propagation in complex media (effect of liquid-vapour transition on sound velocity and absorption in two-phase media),[7] sound-vorticity interaction and its application to the detection of intermittent vortex structures in turbulence,[8] the study of surface waves, which led to the first observation of a hydrodynamic quasi-crystalline pattern [9] [10] and wave turbulence.[11] [12] He initiated the VKS (von Karman Sodium) collaboration by proposing an experiment on the dynamo effect that led to the first laboratory observation of magnetic field reversal,[13] [14] with many similarities to the reversals of the Earth's magnetic field.[15] He is currently interested in the statistical properties of large scales in turbulence[16] [17] [18] and in modelling the quasi-biennial oscillation laboratory, i. e. the quasi-periodic wind reversals in the equatorial stratosphere.[19]

Distinctions

Notes and References

  1. Web site: École normale Supérieure de Paris.
  2. A. Libchaber, C. Laroche and S. Fauve, « Period doubling cascade in mercury, a quantitative measurement », J. Physique Lettres, 43, (1982), p. 211
  3. S. Fauve and F. Heslot, « Stochastic resonance in a bistable system », Physics Letters, 97a, (1983), p. 5
  4. O. Thual and S. Fauve, « Localized structures generated by subcritical instabilities », J. Physique, 49, (1988), p. 1829
  5. S. Douady, S. Fauve and C. Laroche, « Subharmonic instabilities and defects in a granular layer under vertical vibrations », Europhysics Letters, 8, (1989), p. 621
  6. C. Coste, E. Falcon and S. Fauve, « Solitary waves in a chain of beads in Hertzian contact », Phys. Rev., e 56, (1997), p. 6104-6116
  7. C. Coste, C. Laroche and S. Fauve, « Acoustic resonances in a liquid with vapor bubbles : effect of liquid-vapor transition on sound velocity and attenuation », Phys. Rev. Lett., 69, (1992), p. 765-768
  8. B. Dernoncourt, J.-F. Pinton and S. Fauve, « Experimental study of vorticity filaments in a turbulent swirling flow », Physica, d 117, (1998), p. 181-190
  9. W. S. Edwards and S. Fauve, « Structure quasicristalline engendrée par instabilité paramètrique », C. R. Acad. Sci. Paris, 315-ii, (1992), p. 417-420
  10. W. S. Edwards and S. Fauve, « Patterns and quasi-patterns in the Faraday experiment », J. Fluid Mech., 278, (1994), p. 123
  11. E. Falcon, C. Laroche and S. Fauve, « Observation of gravity-capillary wave turbulence », Phys. Rev. Lett., 98, (2007), p. 094503
  12. E. Falcon, S. Aumaître, C. Falcon, C. Laroche and S. Fauve, « Fluctuations of energy flux in wave turbulence », Phys. Rev. Lett., 100, (2008), p. 064503
  13. S. Aumaître, S. Fauve, S. McNamara and P. Poggi, « Power injected in dissipative systems and the fluctuation theorem », Eur. Phys. J., b 19, (2001), p. 449-460
  14. Molten Metal Magnet, January 30, 2007, Phys. Rev. Focus 19, 3 ; Earth magnetic field reversals mimicked in the lab, Nature News, 9 March 2007, doi:10.1038/news070305-14
  15. F. Pétrélis, S. Fauve, E. Dormy and J. P. Valet, « A simple mechanism for the reversals of Earth's magnetic field », Phys. Rev. Lett., 102, (2009), p. 144503
  16. V. Dallas, S. Fauve and A. Alexakis, « Statistical equilibria of large scales in dissipative hydrodynamic turbulence », Phys. Rev. Lett., 115, (2015), p. 204501
  17. V. Shukla, S. Fauve and M. Brachet, « Statistical theory of reversals in two-dimensional confined turbulent flows », Phys. Rev., e 94, (2016), p. 061101
  18. G. Michel, F. Pétrélis and S. Fauve, « Observation of thermal equilibrium in capillary wave turbulence », Phys. Rev. Lett., 118, (2017), p. 144502
  19. B. Semin, F. Pétrélis and S. Fauve, « Nonlinear saturation of the large scale flow in a laboratory model of the quasi-biennial oscillation », Phys. Rev. Lett., 121, (2018), p. 134502
  20. Web site: Médaille d'argent du CNRS. January 2009.
  21. Web site: Institut Universitaire de France.
  22. Web site: Académie des sciences.
  23. Web site: Academia europaea.

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