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Institut Rayonnement Matière de Saclay
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L’Institut Rayonnement-Matière de Saclay (IRAMIS) est un des principaux instituts de la Direction de la Recherche Fondamentale (DRF)  du Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA). L’IRAMIS comprend six unités mixtes de recherche, en association avec le CNRS, l'École Polytechnique ou ENSICAEN. Quatre sont situées sur le Centre de Saclay (LIDyL, LLB, NIMBE et SPEC), membre de l'Université Paris-Saclay, une sur le site de l’Ecole Polytechnique (LSI) et une à Caen (CIMAP), auprès du GANIL.

Parcourez l'IRAMIS :         - par thème de recherche             - par Unité            - par technique

Les recherches en physique et en chimie qui y sont menées sont en lien étroit avec les enjeux sociétaux et les programmes du CEA :

Pour conduire ces recherches, les équipes de l’IRAMIS mettent en œuvre des installations et équipements scientifiques de premier plan et sont aussi très actives autour des Grands Instruments Européens.

Les recherches, principalement de nature fondamentale, menées à l’Institut sont ouvertes sur la création de valeur économique et le transfert technologique. L'IRAMIS est aussi  présent dans 4 LABEX et 4 EQUIPEX du programme d'Investissement d'Avenir du gouvernement français.

 

Site WEB : http://iramis.cea.fr/

 

Last update : 05/09 2019 (0)

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Absorption processes in X and XUV ranges in a medium-Z plasma Interpretation of experiments performed on LULI 2000 laser facility : This page is devoted to the analysis of opacity measurements in laser created plasmas performed on facilities such as the LULI 2000 at Ecole Polytechnique. Absorption spectroscopy is a powerful tool that gives valuable information especially on the electronic structure of ions or on radiative transfer.
Aligned carbon nanotubes obtained using a surfactant bubble : ( French version) Recently Jean-Jacques Benattar and his co-workers at SPEC, CEA-Saclay have developed a simple and original technique to produce surfactant films containing nano-objects such as nanoparticles, nanowires etc. and to transfer such films onto solid substrates [1].
Anciens membres et visiteurs : Permanents ·           Dr. François PIUZZI Retired in 2013 ·           Dr. Iliana DIMICOLI Retired in 2006 ·           Dr. Rodolphe POLLET 2008-2010   Post-docs ·           Dr.
Configuration average and transition arrays : The analysis of the spectral properties of warm dense plasmas such as those present in stellar atmospheres, inertial confinement fusion devices or laser-plasma experiments can involve two types of interpretation. On the one hand, the detailed or “fine structure” approach is based on the determination of all the energy levels obtained by diagonalization of the atomic Hamiltonian, after choosing an adapted set of configurations.
Contracts : ÉquipePublications Collaborations Contrats Recrutement
Drug-Biomolecule publications :     Ultrafast Electron Transfer in the Complexes of Doxorubicin with Human Telomeric G-Quadruplexes and GC Duplexes Probed by Femtosecond Fluorescence Spectroscopy P. Changenet-Barret, T. Gustavsson, D. Markovitsi, I. Manet ChemPhysChem 2016.   Drug/Protein Interactions Studied by Time-Resolved Fluorescence Spectroscopy T. Gustavsson, D. Markovitsi, I. Vaya, P. Bonancia, M. Consuelo Jimenez, M. A.
Foundational questions of quantum information : Workshop "Foundational questions of quantum information" Dates: April 4-5, 2012 Jointly organized by LARSIM and QuPa Venue: Amphi Opale, 46 rue Barrault, Paris 13e   April 4 9:30-9:45 Coffee and Opening 9:45-10:45 Robert Raussendorf (University of British Columbia) 10:45-11:00 Coffee 11:00-12:00 Oscar Dahlsten (University of Oxford) Lunch 14:15-15:15 Matthew Pusey (Imperial College London) 15:15-16:15 Michel Bitbol (CREA, CNRS-Ecole Polytechnique) 16:15-16:45 Coffee 16:45-17:45 Virginie Lerays (LRI, Université Paris Sud)   April 5 9:30-9:45 Coffee 9:45-10:45 Damian Markham (LTCI, CNRS-Télécom ParisTech) 10:45-11:00 Coffee 11:00-12:00 Kavan Modi (University of Oxford and Centre for Quantum Technologies, National University of Singapore) Lunch 14:15-15:15 Giacomo Mauro d'Ariano (University of Pavia) 15:15-16:15 Caslav Brukner (University of Vienna) 16:15-16:45 Coffee 16:45-17:45 Alexei Grinbaum (LARSIM, CEA-Saclay)   Titles/Abstracts Robert Raussendorf "Symmetry constraints on temporal order in measurement-based quantum computation" We discuss the interdependence of resource state, measurement setting and temporal order in measurement-based quantum computation.
Hommage à Bertrand Carré : Hommage à Bertrand Carré C’est avec une grande émotion que nous apprenons la disparition de notre collègue et ami Bertrand Carré. Il s’est battu avec un courage impressionnant contre la grave maladie diagnostiquée en juillet 2016.
Jobs : ÉquipePublications Collaborations Contrats Recrutement   « Back to the Group page   Internships: Master 1 / Master 2 Imaging of charged ferroelectric domain walls for high density storage media Downscaling of memory devices for ultra-high storage densities and low power consumption is a major challenge for post-CMOS electronics in order to implement new functionalities.
Laboratory 'Structure and Dynamics by Magnetic Resonance' :   Version française   The Laboratory 'Structure and Dynamics by Magnetic Resonance' (LSDRM) belongs to NIMBE, UMR CEA/CNRS 3685. The research axes are centered on the conception and the use of new NMR tools. Cutting edge methods and original approaches are proposed, from instrumental developments to molecular simulations.
Le code d’opacité atomique HULLAC-v9 : Le code HULLAC-v9 est un code atomique de structure fine et d’opacité spectrale dont les résultats sont obtenus dans le cadre relativiste en couplage j-j et qui inclut les effets de configuration d’interaction « IC » (plusieurs options sont possibles : soit de façon « exacte » soit différentes approximations telles que CIinNRC).
MesoXcope : « Back to the Group page « Back to the Contracts page Project overview   The objective of this project is to make a groundbreaking contribution to fundamental research using X-ray spectromicroscopy on surfaces and interfaces of multiferroics materials for new energy technologies. Spintronic appears as a fantastic alternative to CMOS technologies because of lower energy dissipation in magnetic processes.
Modeling DNA excitons : Modeling DNA excitons We have modeled the Franck-Condon excited states of DNA duplexes and G-quadruplexes. Our calculations were performed in the frame of the exciton theory combining molecular dynamics simulations (collaboration with Richard Lavery and Krystyna Zakrzewska) and data from quantum chemistry (atomic transition charges for the calculation of dipolar coupling).
Physics and Computation : Workshop "Physics and Computation" Dates: June 28-29, 2012 Jointly organized by LARSIM and QuPa with support from ANR CausaQ Venue: Institut Henri Poincaré   June 28   9:00-9:15 Opening / Coffee served 9:15-10:15 Dan Browne (University College London) 10:15-10:30 Coffee 10:30-11:30 Marc Kaplan (LTCI, CNRS and Télécom Paristech) 11:30-12:30 Thomas Lawson (LTCI, CNRS and Télécom Paristech) Lunch 14:30-15:30 Karl Svozil (Technical University of Vienna) 15:30-16:30 Jeffrey Barrett (University of California in Irvine) 16:30-17:00 Coffee 17:00-18:00 Bob Coecke (University of Oxford)   June 29 9:15-10:15 Gilles Dowek (INRIA) 10:15-10:30 Coffee 10:30-11:30 Pablo Arrighi (Université de Grenoble) 11:30-12:30 Maël Pégny (Université Paris I and LARSIM, CEA-Saclay) Lunch 14:30-15:30 José Félix Costa (Technical University of Lisbon) 15:30-16:30 Florent Franchette (Université Paris I) 16:30-17:00 Coffee 17:00-18:00 Olivier Bournez (Ecole Polytechnique)   Titles/Abstracts Dan Browne "Bell Inequalities and Computation" What does it mean to violate a Bell inequality? In my talk, I will report on recent work [1,2,3] which shows that a clean operational answer this question can be given in the framework of measurement-based quantum computation.
Plasma environment effects : This activity is aimed at studying the effects related to the presence of other ions and free electrons on the energies and wave-functions of an ion in a plasma. It is based on an ion-sphere type approach and concerns mostly moderate-density and high-temperature plasmas. The simplest hypothesis consists in considering that the free electrons form a uniform-density gas which screens the nucleus-electron Coulomb interaction.
Publications LENSIS : ÉquipePublications Collaborations Contrats Recrutement « Back to the Group page 2017 Electrical respons of Pt/Ru/PbZr0.52Ti0.48O3/Pt capacitor as function of lead precursor excess, I. Gueye, G. Le Rhun, O. Renault, E. Defay, N. Barrett. Applied Physics Letters, 111, 222902 (2017). Control of surface potential at polar domain walls in a non-polar oxide, G. F. Nataf, M. Guennou, J. Kreisel, P. Hicher, R. Haumont, O. Aktas, E. K. H. Salje, L. Tortech, C. Mathieu, D.
Screening : « Back to the Group page « Back to the Oxides page   Surface polarization charge in ferroelectric (FE) materials can be screened by a variety of mechanisms: intrinsic (charge carriers or defects in the bulk), extrinsic (chemical environment or adsorbates), domain ordering, or even a combination of the above. Chemisorption of OH- and protons can lead to important changes in the electrical boundary conditions and water film can play an active role in domain switching.
Spontaneous Onset of Collective Motion! : ( Version française)   Julien Deseigne and Olivier Dauchot, researchers in the Group of Instabilities and Turbulence at IRAMIS-SPEC have revealed experimentally the spontaneous onset of collective motion in a system of vibrated  self-propelled circular disks. The emergence of such an order is remarkable because it should only exist in a system made of intrinsically out-of-equilibrium components.
Structures Biomoléculaires : Financements / Contrats : ANR-17-CE29-0008 TUNIFOLD-S Tuning foldable building blocks using sulfur; 2018-2020; Coord. Michel Mons; Partenaires D.J. Aitken (ICMMO, Orsay) et Anne Zehnacker (ISMO, Orsay) ANR-16-CE29-0017 IONPAIRS Spectroscopy of isolated and microsolvated ion pairs; 2016-2020; Coord. E. Gloaguen ANR-14-CE06-0019 ESBODYR Excited States of BiO-relevant systems: towards ultrafast DYnamics with conformational Resolution; 2014-2018; Coord. V. Brenner, Part. S. Hoyau (Toulouse), A.
Switching the polarization :       « Back to the Group page « Back to the Oxides page       Switching requires a metallic contact, raising fundamental issues about the interface between the FE and the electrode. Polarization leads to fixed charge of opposite sign at the two metal-FE interfaces.

 

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