Staff

Research

For students

Links

Geoffroy Lumay

Education and Current Position

1999-2003 : Physics student at the University of Liège, graduated in june 2003.

2003-2007 : PhD thesis at the University of Liège.

Present : Teaching Assistant at the University of Liège.

Address

GRASP, Institut de Physique B5a, local 3/15
Sart-Tilman, Université de Liège,
B-4000 Liège, Belgium

phone: +(32) 4.366.37.07
fax: +(32) 4.366.29.90
E-mail: geoffroy.lumay@ulg.ac.be

Research Interests

My research works are focused on experimetal studies of vibrated granular medias and more precisely on compaction.

I am also involved in the new platform Aptis dedicated to powder characterisation.

Teaching

Teaching is also part of my job at university. Indeed, I am working as teach assistant. Here is a list af my activities:

• Laboratories of general physics.
• Laboratories of spectroscopy.
• Practical work of programming (JAVA).
• Practical work of microcontroler programming.
• Laboratories for Young students "Physiciens en Herbe"

Publications

1.Compaction of anisotropic granular materials: Experiments and simulations
G. Lumay and N. Vandewalle
Phys. Rev. E 70 ,051314 (2004 )
Show Abstract
Impact Factor : 2.352

2.Grain mobility and hexagonal domains formation in 2d granular compaction
G. Lumay and N. Vandewalle
Powders & Grains - ,- (2005 )
Show Abstract


3.Experimental Study of Granular Compaction Dynamics at Different Scales: Grain Mobility, Hexagonal Domains, and Packing Fraction
G. Lumay and N. Vandewalle
Phys. Rev. Lett. 95 ,028002 (2005 )
Show Abstract
Impact Factor : 7.489

4.Experimental study of the compaction dynamics for two-dimensional anisotropic granular materials
G. Lumay and N. Vandewalle
Phys. Rev. E 74 ,021301 (2006 )
Show Abstract
Impact Factor : 2.418 (2005)

5.Compaction of granular materials: experiments and contact dynamics simulations
G Lumay, F Ludewig and N Vandewalle
J. Phys.: Conf. Ser. 40 ,133 (2006 )
Show Abstract


6.Linking compaction dynamics to the flow properties of powders
G. Lumay, C. Bodson, L. Delattre, O. Gerasimov and N. Vandewalle
Appl. Phys. Lett. 89 ,093505 (2006 )
Show Abstract
Impact Factor : 4.127 (2005)

7.Precursors to avalanches in a granular monolayer
T. Scheller, C. Huss, G. Lumay, N. Vandewalle and S. Dorbolo
Phys. Rev. E 74 ,031311 (2006 )
Show Abstract
Impact Factor : 2.418 (2005)

8.The influence of grain shape, friction and cohesion on granular compaction dynamics
N. Vandewalle,G. Lumay G,O. Gerasimov,F. Ludewig
Eur. Phys. J. E 22 ,241 (2007 )
Show Abstract
Impact Factor : 2.503 (2005)

9.Stationary states in 1D system of inelastic particles
O.I Gerasymov, N. Vandewalle, A.Ya. Spivk, N.N. Khudyntsev, G. Lumay, S. Dorbolo, O.A. Klymenkov
Ukr. Journ. Phys. - ,- (2007 )
Show Abstract


10.TUNABLE RANDOM PACKINGS
G.Lumay and N.Vandewalle
New J. of Phys. 9 ,406 (2007 )
Show Abstract


11.Swarming and swirling in self-propelled polar granular rods
Arshad Kudrolli, Geoffroy Lumay, Dmitri Volfson, Lev S. Tsimring
Submitted to Phys. Rev. Lett. 100 ,058001 (2007 )
Show Abstract
Impact Factor : 7.072

Electronics

• An accelerometer for less than 50 euros!
• AVR Microcontrollors programming

Personal data

• Mechanics

During my free time, I'm building some strange and useless devices...

   


• Electronics

Photos

Growing of hexagonal compact domains in a granular compaction experiment. Watch the movie

Flowing of metallic balls in a rotating drum

Vibrated granular layer. Watch the movie Strange attractor.