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Headlines 2007

December 2007

19-12-2007
H. Gilles, S. Girard, M. Laroche, A. Belarouci CIMAP, Caen
The SNOM (Scanning Near-field Optical Microscopy) allows to reach a spatial resolution well below the wavelength of the light used. Indeed, thanks to the "near-field" illumination (when the distance between the object and the source is much less than the wavelength) it ... More »
 

November 2007

13-11-2007
Clusters consists in a set of several up to million atoms in condensed phase with nanometric finite size. The investigation of their properties as the function of their increasing size is sometimes presented as one way to build a macroscopic condensed world from a gas. This ... More »
 

September 2007

21-09-2007
Vincent Mévellec, Sébastien Roussel, Guy Deniau, Serge Palacin
Polymer grafting on surfaces conducting electricity is one major topic of the activities of the "Laboratoire de Chimie des Surfaces et Interfaces (LCSI)" directed by Serge Palacin. Many patents deposited on the electro-grafting (eG©) process contributed to ... More »
 

June 2007

27-06-2007
Researchers at the Institute of Electronics, Microelectronics and Nanotechnologie (IEMN / CNRS – Universités Lille 1 and Valenciennes, Institut supérieur de l’électronique et du numérique-ISEN) and  the Solid-state Physics Division at the French ... More »
08-06-2007
Nuclear magnetic resonance (NMR) is an indispensable technique for studying matter. It can be applied to medical imaging (MRI) to obtain 2D and 3D images of the human body. While it opens the door to a wealth of physicochemical information by harnessing the fundamental properties of matter, NMR ... More »

April 2007

13-04-2007
P. Viswanath, J. Daillant, L. Belloni, M. Alba, DRECAM/SCM – Service de Chimie Moléculaire, S. Mora (LCVN, Montpellier) et O. Konovalov (ESRF).
When a salt like NaCl is dissolved in water, sodium and chlorine separate in ionic form Na+ and Cl-, become surrounded by water molecules and disperse. This deeply modifies the nature of the solvent which becomes for example, a good electricity conductor. At the surface, ... More »
11-04-2007
S. Petit, F. Moussa, M. Hennion et S. Pailhès (DRECAM/LLB CEA-Saclay)
L. Pinsard-Godard, Laboratoire de Chimie du Solide, Paris XI
A. Ivanov, ILL, BP 156 F-38042 Grenoble
Multi-ferroïcs are exceptional materials whose fundamental state is both magnetic and ferro-electric [1]. Moreover, in such materials, magnetism and ferroelectricity maintains close links: as for example the manganese oxide YMnO3 [2], can see its magnetization modified by the action of an ... More »

March 2007

29-03-2007
VKS collaboration (CEA-CNRS-ENS Lyon and Paris), CEA contact: Francois Daviaud
Over the geological ages, the Earth has undergone several erratic reversals of its magnetic field. The sun’s magnetic field is reversed regularly every 22 years according to its cycle. These magnetic dynamics, which are still shrouded in mystery, play a role in our planet’s exposure to ... More »
28-03-2007
M.-A. Dubois1, L. H. Emmons2, L. Cournac3, P. Chatelet4, N. C. A. Pitman5, V. Vilca5, & L.-F. del Aguila6
1CEA Saclay, DSM/DRECAM/Service de Physique de l ’Etat Condensé, L ’Orme des Merisiers, 91191 Gif sur Yvette, France 2Department of Zoology NHB 390 MRC 108, Smithsonian Institution, P.O.Box 37012,Washington, DC 20013-7012 USA 3CEA Cadarache, DSV/DEVM/Laboratoire d ... More »
23-03-2007
V. Brenner, F. Piuzzi, I. Dimicoli, B. Tardivel, and M. Mons
One of the great mysteries of life is its lack of symmetry at the molecular scale. Many biological molecules, like amino acids, exist a priori in two asymmetrical forms, "right” and “left”. Such molecules are referred to as “chiral” . Like the two hands, these ... More »
16-03-2007
J.M. Mestdagh, L. Poisson, I. Fischer, P. D’Oliveira
Service des Photons, Atomes et Molécules DRECAM/SPAM
The very new laser of the "Plateforme Laser Femtoseconde Accordable, PLFA" began to be installed last year within the Service of Photons Atoms and Molecules (SPAM). It belongs to the infrastructure SLIC, member of the European network LASERLAB-EUROPE and is thus accessible to European ... More »

February 2007

07-02-2007
M. Roger1, D.J.P Morris2, D.A. Tennant3,4, M.J. Gutmann5, J.P. Goff2, J.-U. Hoffmann3, R. Feyerherm3, E. Dudzik3, D. Prabhakaran6, A.T. Boothroyd6, N. Shannon7, B. Lake3,4 & P.P. Deen8. 1Service de Physique de l’Etat Condensé (CNRS/MIPPU/URA 2464), DSM/DRECAM/SPEC, CEA Saclay, ... More »
 

January 2007

27-01-2007
A. Chiffaudel, F. Daviaud, B. Dubrulle, C. Gasquet, R. Monchaux, V. Padilla, avec la participation de L. Marié et F. Ravelet, DSM/DRECAM/SPEC
Collaboration VKS : CEA – ENS Lyon – ENS Paris -
Many research teams aim at understanding of the origin and behavior of the magnetic field of planets and stars. The VKS1 collaboration (gathering researchers at CEA, CNRS, Ecoles normales supérieures in Lyon and Paris) has succeeded in generating a magnetic field from a highly turbulent ... More »
03-01-2007
Samples from the spatial mission Stardust have been analysed by a team of the Pierre Süe Laboratory in Saclay (CEA-DSM/DRECAM et CNRS-Chimie). The technique used, nuclear reactions induced by a microbeam, allows an absolute measurement of the concentration in constitutive elements in the ... More »

 

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