Birth:  19 Octobre 1965, Paris XIVe
Baccalauréat : C (science), Juin 1983
Ecole Normale Supérieure (concour math), Juin 1985
Magistère Inter-Universitaire de Paris,
(licence, maîtrise de physique, D.E.A de mécanique quantique), Juin 1987

Thèse de Doctorat de l'Université de Paris VI, spécialité physique, 18 Octobre 1989

C.N.R.S., (Science Physique et Mathématique) :

C.R.2, Septembre 1989
C.R.1, Septembre 1993
D.R.2, Septembre 2003

Médaille de Bronze du C.N.R.S., Juin 1991
Prix Édouard Branly, Décembre 1998
Médaille d'Argent du C.N.C.S., Juin 2005

1980-1983, Lycée Racine, Paris VIIIe
1983-1985, Lycée Condorcet, Paris IXe
1985-1987, Ecole Normale Supérieure, rue d'Ulm, Paris Ve
1987-1990, Laboratoire de Physique de l'Ecole Normale Supérieure de Lyon, Lyon VIIe
1991-...       Laboratoire de Physique Statistique de l'Ecole Normale Supérieure, Paris Ve
2001-2005      Dune field of Tarfaya (Morroco)
2005-Ö, Laboratoire Matière et Systèmes Complexes, Grands Moulins?

People (by order of appearance,  thesis students) ):

Stephan FAUVE
Claude LAROCHE
Francisco MELO
Yves COUDER
Olivier CADOT
Daniel BONN
Arkadi TSINOBER
Bruno ANDREOTTI
Malek ABID
Caroline NORE
Adrian DAERR
Laurent QUARTIER
Steffen BOHN
Ken ANDERSON
Pascal HERSEN
Belkacem KABACHI
Hicham ELBELRHITI
Sylvain COURRECH du PONT
Étienne COUTURIER

Work:

1987-1989 Thesis : "surface instabilities under parametric excitation",
       Faraday instability in vertically vibrated thin layer of fluids and granular media,
       other instabilities (convection, period doubling) in vibrated granular beds,
       experiments and modelization by amplitude equation normal form.

1990 Dynamics and instability of grains in an horizontal rotating drum,
       experiments modelled by  stick-slip instability of the surface flowing layer.
       Same experiments and instability for a fluid layer (spatio-temporal intermittency).

1991-1996 Fully developed turbulence, vorticity and low pressure filaments :
       their first observation in fully developed 3D turbulent flow in a new geometry,
       study of their characteristics and dynamics, model experiments on a
       single vortex to study the interaction of vorticity and strain.

             Phyllotaxis : modelization of the appearance of the leaves to reproduce
       the botanical arrangement and explain the appearance of the Fibonacci series,
       as well as the selection between the whorled and the spiral modes.
       Simulation of real specimens, study of abnormal transitions.

1997-2000 Grain avalanches on a rough inclined plane, study of the dynamics of
       grains in the hysteresis between the dynamical and static angle.
       Modelization and experiments of granular surface flows (on a pile).

2000-2004 Venation: studies of the net formed by the veins of plant leaves,
     characterisation of the sturcture, of the angles between the veins.

2001-Ö      Dunes : Field studies of the dune field of Tarfaya (Morroco - 2005).
      Description and measurement  of the motion of the barchanes, destabilising effect of the winter
      storms. Reproduction of miniaturebarchanes under water. Reproduction of other types  of dunes
      underwater (transverse, longitudinal and star dunes).

               Song of the Dunes :  Studies (in the field ­Morroco, Chile, China, Oman- and in the lab) of the song of the dunes.

2005-Ö Study of Avalanche Fronts in a channel, explanation of the frontsí constant velocity.

2005-Ö Study of the (un-)folding of leaves in the buds, in relation with the final leaf shape.

Transmission
 

Stages de Physique expérimentales, Licence-Maîtrise de physique de Paris VII (1995-1996)
Cours sur le chaos et la physique non-linéaire, (2eme semestre), DEA CPM, IPB, Paris VII-XI (2001-Ö)
Retraite-Initiation aux projets interdisciplinaire, Foljuif, AIV, (1 semaine, 2003-Ö)
Cours díÉcole Doctorale díÉté (11*1h30, 250 étudiants), BeiJing, Chine (2004)
Cours díÉcole Doctorale díÉté (2*1h30), Homloebeck, Danmark (2004)
Science Académie (1h30 Paris, 2006)

Diffusion
 

Articles de vulgarisation (Science & Vie, S&V junior, La recherche, Pour la Science)
Émissions de radio (France Culture,  RTL, Europe 1, France Inter, RFI, Radio Campus, BBC World(*4), ABC)
Émissions de télévision (Canal+, F2-JT , E=M6, TF1-Ushuaïa, FR3-littoral, Chaine Parlementaire)
Articles dans la presse (Guardian, F.M., Figaro, VSD, Le monde, JdD, libé, France-Ouest, France-Soir, New-York Times)
Article à l'AFP
Conférences ëgrand publicí (Collège Universitaire Fontenaisien, Mediathèque, Collèges, Année de la physique, Paris-Montagne)
bars des sciences (Le tas/théatre de líaquarium, Nuit Blanche/chapelle des Arts&Métiers, Abracadabar, Père Tranquile)

Publications

INSTABILITIES

ìPattern Selection in Faraday Instabilityî S. Douady et S. Fauve, Europhys. Lett., 6 (3), 221-226 (1988)
ìOscillatory Phase Modulation of Parametrically Forced Surface Wavesî   S. Douady, S. Fauve et O. Thual, Europhys. Lett., 10 (4),0309-315 (1989)
ìExperimental study of the Faraday instabilityî S. Douady, J. Fluid Mech., 221, 383-409 (1990)
ìInvestigating Space-Time Chaos in Faraday Instability by Mean of the Fluctuations of the Driving Accelerationî  S. Ciliberto, S. Douady et S. Fauve, Europhys. Lett., 15 (1), 23-28 (1991)
ìDrift Instabilities of Cellular Patternî S. Fauve, S. Douady et O. Thual, J. Phys. II, 1, 311-322 (1991)
ìFrom solitary waves to stationarry pattern through spatio-temporal intermitencyî F. Melo et S. Douady  Phys. Rev. Lett. 71, 3283-3286 (1993)

 ìThe perfectly inelastic rebounding ball. Part I : Dynamics and phase space studyì S. Douday, à paraître dans Physica D (2002...)

GRANULAR MEDIA

 ìConvective flow of granular masses under vertical vibrationsî C. Laroche, S. Douady et S. Fauve, J. Phys. France 50, 699-706 (1989)
 ìSubharmonic Instabilities and Defects in a Granular Layer under vertical Vibrationsî S. Douady, S. Fauve et C. Laroche, Europhys. Lett. 8 (7), 621-627 (1989)

  ì Sensitivity of granular surface flow on preparationì A. Daerr et S. Douady, Europhys. lett. 47, 324-330 (1999)
 ìOn granular granular surface flow equationsì S. Douady, B. Andreotti et A. Daerr, Eur. J Phys. B 11, 131-142  (1999)
 ìTwo types of avalanches behavior in granular mediaì A. Daerr et S. Douady, Nature 399, 241-243 (1999)
 ìDynamics of a grain on a sandpile model ì L. Quartier, B. Andreotti, S. Douady et A. Daerr, Phys. Rev. E  62, 8299-8307 (2000)
 ì Selection of velocity profile and flowing depth in granular flows ì  B. Andreotti et S. Douady, Phys. Rev. E 63, 031305(8) (2001)
 ìOn scaling laws in granular flows ì B. Andreotti et S. Douady, Phys. Fluids 14, 415-418  (2002)

HYDRODYNAMICS, TURBULENCE

 ìDirect Obsevation of the Intermitency of Intense Vorticity Filamentsî S. Douady, Y. Couder et M.-E. Brachet, Phys. Rev. Lett. 67 (8), 983-986 (1991)
 ìFrom small scales to large scales in 3D Turbulence: the effect of diluted polymersî D. Bonn, Y. Couder, P.-H. van Dam et S. Douady, Phys. Rev. E 47 (1): R28-R31 (1993)
  ìCaracterisation of the low pressure filaments in a 3D turbulent shear flowì O. Cadot, S. Douday et Y. Couder, Phys. Fluids 7, 630-646 (1995)
 ìEnergy injection in closed turbulent flows: stirring through boundary layers versus inertial stirringì O. Cadot, Y. Couder, A. Daerr, S. Douady, A. Tsinober, Phys. Rev. E, 56, 427-432 (1997)
 ìTrubulent drag reduction in a closed flow system: boundary layer versus bulk effects ì O. Cadot, D. Bonn et S. Douady, Phys. Fluids 10, 426-436 (1998)
 ìOn probability distribution in turbulenceì B. Andreotti et S. Douady Physica D 132, 111-132 (1999)
 ìAn experiment on two aspects of the interaction between strain and vorticityì B. Andreotti, S. Douady et Y. Couder , J. Fluid Mech.444, 151-174 (2001)
 ìOscillating structures in a stretched-compressed vortexì M. Abid, B. Andreotti, S. Douady et C. Nore, J. Fluid Mech. 450, 207-233 (2002)

BOTANY

Phyllotaxis

 ìPhyllotaxis as a self-organized growth processî S. Douady et Y. Couder, Phys. Rew. Lett. 68, 2098-20101 (1992)
 ìLa physique des spirales végétalesî S. Douady et Y. Couder, La Recherche, (250) 24, 26-35 (1993)
ìPhyllotaxis as a self organizing process-ì S. Douady et Y. Couder J. theor. Biol. 178 (1996)
ìPart I :  The spiral modes resulting from time periodic iterationsì 255-274.
 ìPart II: The spontaneous formation of a periodicity and the coexistence of spiral and whorled patternsì 275-294.
 ìPart III: The simulation of the transient regimes of ontogenyì 295-312.

Veination

 ìThe leaf venation as formed in a tensorial fieldì Y. Couder, L. Pauchard, C. Allain, M. Adda-Bedia  and S. Douady, Eur. Phys. J. B 28, 135-138 (2002))
 ìConstitutive property of the local organization of leaf venation networksì
  S.Bohn, B. Andreotti, S. Douady, J.Munzinger et Y. Couder, Phys Rev E 65, 06914-1-  (2002)
ìFour sided domains in hierarchical space dividing patternsî S. Bohn, S. Douady, Y, Couder, Phys. Rev. Lett. 94, 54503 (2005)

DUNES

ìSelection of dune shapes and velocitiesì B. Andreotti, P. Claudin et S. Douady, Eur. Phys. J. B 28 (2002)
 ìPart 1: Dynamics of sand, wind and barchansì, 321-339
 ìPart 2: A two-dimensional modellingì , 341-352
 ìRelevant lengthscale of barchan Dunesì P. Hersen, S. Douady et B. Andreotti,  Phys. Rev. Lett. 89, 264301-4 (2002).
ìCorridors of Barchan Dune : Stability and Size Selection ìP. Hersen, K. H. Andersen , H. Elbelrhiti, B. Andreotti, P. Claudin and S. Douady;, Phys. Rev. E, 69, 011304, (2004).
 ìCollisions of barchan dunes as a mechanism of regulationî P. Hersen, S. Douady, , Geophys. Res. Lett., 32, L21403, (2005).

SONG OF DUNES

ìThe song of the dunes as a self-synchronized instrumentî S. Douady, A. Manning, P. Hersen, S. Protière, A. Daerr, B. Kabbacci, to appear in Phys. Rev. Let. (July 2006).