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Stéphane Dorbolo

Education and Current Position

1992-1996 : Physics student at the University of Liège, undergraduated in june 1996.

1996 : ARC Researcher at the SUPRAS group.

1997-2000 : FRIA Researcher : PhD studend in Physics on the thermal properties of High Tc Superconductors at the SUPRAS group.

2000-2002 : Teaching Assistant : Postdoc at the Electrical and Electronical measurements service (MIEL).

2002-2005 : FNRS fellowship. Postdoc at the GRASP. Stay at Collège de France, Paris and Clark University, Worcester, USA.

Address

GRASP, Institut de Physique B5a, local 3/55
Sart-Tilman, Université de Liège,
B-4000 Liège, Belgium

phone: +(32) 4.366.36.56
fax: +(32) 4.366.29.90
E-mail: s.dorbolo@ulg.ac.be

Research Interests

Thermal Properties of High-Tc Supercondutors (1996-2002) :
Specific heat, Thermal diffusivity, Thermal conductivity

	Reexamination of the Branly coheror experiment Metallic grains are confined between electrodes. The voltage is measured according to the injected current. The arches determine the electrical properties. Microsolderings generate a hysteretic behavior. Hysteresis, high sensibility, electromagnetic waves detection.
	Anisotropic grain: the bouncing dimer case Dimers composed by two centrimetric metallic beads linked by a thin rod are placed on an electromagnetic shaker. Several stable excited modes are observed. The first excited mode conducts to a persistent translation motion. According to the aspect ratio of the dimer, it goes backwards or forwards. Hysteresis, energy modes, friction, woodpecker effect.
	Stability of a monolayer of grains A monolayer of centrimetric beads are deposit on a plane. The angle is increased until the heap breaks. The dimension of the layer has been tuned. For large and high layer, the breaking angle corresponds to the arctangent of the coefficient of friction. Respose angle, friction, avalanches

	Droplet cascade of coalescence A millimetric droplet is deposit on a liquid. It partially coalesces giving birth to a smaller droplet. That phenomenon occurs up to 6 times. A unique curve has been found for the law giving the evolution of the radius. A maximal and a minimal critical radius has been found for cascades to occur. Partial coalescence, microdroplet, delay to coalescence
	Air coated droplet : the antibubble By gently pouring a liquid containing surfactant over the same liquid, antibubbles may be created. Their lifetime is about 15 minutes. The drainage has been found to be the main mechanism that drives their lifetime. Shearing experiments have been perfomed in a vortex! Moreover the pressure influence is about to be determined. Coated droplets, air films, shearing of antibubbles
	Oil coated droplet : the water droplet coated by oil A film of oil may be created in the water using a copper frame. By flowing water through it, oil bubbles are created. The accumulation of such object gives birth to a biliquidic foams. Foam, slow dynamics, drainage
	Multi coated droplet : the droplet in a droplet in a droplet... The impact of a water droplet on a thin oil film creates several different objects. Among these objects, the liquid onions is the most surprising: a droplet of oil is surrounded by water that is surrounded by oil that is surrounded by water that is surrounded by oil in the water. Curring experiments have been tried to encapsulated a liquid in a droplet. Impact, multicoating, curring
	2D anti-foam Droplets of liquid may exist and last over the surface of a liquid when the surface vibrates (about 100 Hz). By creating a large number of droplets, they attract each other and form a collection of droplets seperated by a thin film of air. The droplets deform and 120¡ angles are observed, exactely like in foam systems. Vibration, 2D foam, air film

Where aiming to win ? Simulations shown the unfair disposition of numbers on a classical dart target

CV

Publication list (37)

Conferences (30)

Collaborations

Next conferences
July 2005 : Grains and Powders, Stuttgart, Germany

Other interests

1981-2003 : Les Scouts
Benja (80-82), Louveteau (82-86), Scout (86-91), Animator (91-94), Responsible Animator (94-96), Unit Collaborator (96-98), Assistant Unit animator(98-00), Responsible Unit animator (00-03). Better known in Vaux-sous-Chèvremont as Marcassin Affirmatif, isn't it Raton ?

April 1st, 1997 : Creation of Physical Review X.

April 1st, 1998 : Creation of PRX Movie Entertainment.

May 26th, 2004 : Prediction of the Champion's World Series during a seminar:
Success. See also Red Sox

August 2nd, 2004 : Prediction of Belgian Champion of football.
In process. See also Rouches

2000- : Member of the 'Etau'.

2004 : Secretary of the Rhinodo indoor soccer team composed by the physicists!

Bike, walk in the wonderful forests of the area. Wallonia is a great place.

Photos

Panoramic view of my favourite place : Vaux-sous-Chèvremont

Panoramic view of New Jersey from Manhattan

Panoramic view of Boston from the left bank. A day when a Red Sox game has been postponed because of the rain. The year of the year!

Around Fenway park, the day when the game has been postponed.

'The year' celebration with my little Godson.

The raison why I like arriveing early at work.

As I saw America