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21 October 2020

Plasma FIB-SEM, a new tool for nanoscale studies of bone tissue.

Visualizing bone tissue at the nanoscale could provide new cues to better better understand diseases such as osteoporosis and arthritis. It is precisely at that scale that the most fundamental mechanisms take place, which ultimately determine the mechanical properties of bone (elasticity, fragility, toughness) and calcium homeostasis, crucial for numerous physiological processes.

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15 September 2020

White cells use paddling to move

Leukocytes have a ubiquitous capacity to migrate on or in solid matrices and with or without adhesion, which is instrumental to fight infections. The precise mechanisms sustaining migration remain, however, arguable. It is for instance widely accepted that leukocytes cannot crawl on two-dimensional substrates without adhesion. In contrast, we showed that human lymphocytes swim on nonadherent two-dimensional substrates and in suspension.

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14 May 2020

2020 Publication Award of JOR

Le journal of Rheology a décerné son prix 2020 "Publication award" à Abhinendra Singh, Romain Mari, Morton M. Denn & Jeffrey F. Morris pour leur travail sur les suspensions denses et frictionnelles.

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6 May 2020

A new class of absorption lines in the water vapor spectrum

Electric-quadrupole infrared transitions are detected in water vapor at room temperature. This is the first direct detection of quadrupole transitions in a polyatomic molecule. Using a newly developed, high-accuracy variational approach for theoretical predictions, several weak quadrupole transitions of H2O were identified in a highly sensitive cavity-ring-down spectrum of water vapour near 1.3 µm, in full agreement with the computational predictions.

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20 April 2020

QuanTI-FRET, a new method for the quantitative analysis of FRET in living cells

FRET, Förster Resonance Energy Transfer, is an energy transfer between two fluorophores that only takes place when they are within 10nm of each other. The quantitative measurement of this effect makes it possible to measure distances in the nanometer range with a simple fluorescence microscope. While this was possible for isolated molecules, quantification of FRET was considered almost impossible in more complex samples. A team at LIPhy has developed a new method for quantitative measurements of FRET in living cells. This paves the way for a more extensive and successful use of fluorescent biosensors.

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To be noted

Ecole Thématique Mécabio

october 2020 @ Lus-La-Croix-Haute

Active Complex Matter 2020

1-11 sept. 2020 @ Cargese (Corsica)

PhD defenses

this automn @ LIPhy

Invited talks

to come @ LIPhy