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Tuesday 23 April at 11:00

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Physique du cyclisme olympique

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23 January 2023

Webb Unveils the Dark Side of Pre-stellar Ice Chemistry

An international team, including researchers from CNRS, has been able to measure the composition of interstellar ices in the darkest and coldest regions of a molecular cloud measured to date, using observations from the NASA/ESA/CSA James Webb Space Telescope (JWST). This result published in Nature Astronomy allows astrophysicists to prefigure the simple ice molecules that will potentially be incorporated into future exoplanets, while opening a new window on the origin of more complex molecules that are the starting point for the formation of the first building blocks of prebiotic interest.

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13 December 2022

Attosecond science to define the infinitely short

What are the behaviors of matter on an infinitely small time scale? Could we, at this scale, observe or even control the interactions of its constituents? What would be the possible applications? Find the contribution of several Paris-Saclay laboratories, including the DIRAM team from ISMO.

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13 December 2022

Understanding the processes induced by electrons

Anne Lafosse is a lecturer in the SIM2D team. She specialises in the observation of electrons, through experimental and instrumental developments for multiple applications.
Find her portrait on Paris Saclay University web site.

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23 October 2022

Understanding the coupling of the hydrated proton to its first solvation shell

Despite its considerable importance, the "Grotthus" mechanism by which an "excess" or deficiency proton in aqueous solution is transmitted through the hydrogen bonds of water molecules remained largely misunderstood.
Full-dimensional quantum calculations carried out by Fabien Gatti of ISMO and his colleagues have made it possible to correctly reproduce the infrared spectra of the hydrated proton and to contribute to the understanding of this mechanism. These results are published in Nature communications

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22 September 2022

Distant formation and early evolution of the carbonaceous asteroid Ryugu: direct evidence from samples returned by Hayabusa2

The Japanese Hayabusa2 mission (JAXA) has brought back samples from the carbonaceous primitive asteroid Ryugu. Thanks to the analyses of these samples by an international group led by Prof. Tomoki Nakamura (Tohoku Univ., Japan), it is possible to propose a scenario retracing the history of Ryugu, including its formation after the fragmentation of its parent asteroid.

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20 October 2021

CinNapht : a new fluorophore family

A collaboration between ICSN, ISMO (SYSTEMAE group) and PPSM has shed light on the spectroscopy and photophysical properties of a new fluorophore family obtained by fusing cinnoline to naphthalimide to give a donor-acceptor system called CinNapht.

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4 July 2021

In search of hidden order

All changes of state in matter, like the freezing of water into ice, are characterized by some physical parameter of the system becoming ordered. But in some exceptional cases, the parameter describing the ordered state remains unknown, hiding new physics. Now, an international collaboration led by researchers at ISMO has unveiled how, in one of such mysterious “hidden-order” phases, the interactions between quantum electronic transform under the effect of chemical pressure. This finding sheds new light into what physics is cloaked behind the “hidden-order” veil. Their results have been published in PNAS.

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24 June 2021

Death of Roland Lefebvre

We have just learned the very sad news of the passing of our friend and colleague on June 20, 2021. Roland Lefebvre pursued his brilliant research careers at the CNRS Laboratory of Molecular Photophysics, of which Roland was one of the founders with Sydney Leach, François Legay and Lars Lindqvist, as well as its director from 1982 to 1988.
Professor Roland Lefebvre’s work has focused on the theoretical aspects of Molecular Physics, from electronic correlation and hyperfine structures, paramagnetic resonance, superradiance and photon echoes, quantum collision theory and radiation-matter interaction, to problems of control by intense electromagnetic fields of time and energy-resolved electron-nuclear dynamics.

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3 January 2020

Manipulating electrons with light

Researchers from ISMO, University of Luxembourg, University of Konstanz (Germany) and CFM (San Sebastian, Spain) used light to control the dynamics of electrons in a metallic nanocircuit on spatial scales and atomic time. The results of the study have been published in Nature Physics (2019)

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5 December 2018

The Etoiles de l’Europe’s special prize has been awarded to Ruxandra Gref

Since 2013, the Étoiles de l’Europe (Stars of Europe) award has shined a light on European initiatives launched by French scientists. Rewarding both scientific expertise and the capacity to coordinate large international teams, this prize is given each year to twelve researchers and their respective projects. The 2018 edition, which was held on December 5 at the Musée du quai Branly — Jacques Chirac, included Ruxandra Gref, Research director at ISMO, for the use of nanoparticles to bolster antibiotics ( ITN Cyclon Hit)

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4 December 2018

Death of Michel Barat

It is with great sadness and deep sorrow that we learnt of the passing of Michel Barat on November 28, 2018 at the age of 80.
Michel Barat played a prominent role in Physics and Chemistry at Orsay (Université Paris-Sud). He found the Laboratoire des Collisions Atomiques et Moléculaires (LCAM) in 1977.

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26 October 2018

First Bose-Einstein condensation in space

A Bose-Einstein condensate was created for the first time in space by a team of physicists from the University of Hanover (Germany), in collaboration with theoretical physicists from ISMO (University Paris-Sud-CNRS, Orsay, France). This work has been published in Nature

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