News : IRIG

With its tuneable chemical reactivity, cysteine plays crucial roles as Ni ligands in active sites of redox Ni enzymes. Instead, histidines are preferred to coordinate Ni(II) ions in non-redox proteins. Interestingly, cysteine exhibits extreme patterns of conservation, being either highly conserved or completely degenerated, with a strong tendency to form buried cysteine clusters. The case […] >>

The aim of this training period is the experimental study of the transition to turbulence in a superfluid He boundary layer (below 2.17K) at the surface of an oscillating plate. Superfluid helium is often described a mixture of two independent components: the normal component is viscous and governed by the standard Navier-Stokes equation while the […] >>

Up to now transmission electron microscopy (TEM) was more focused on producing images or diffraction patterns of objects. Of course, some pioneering techniques like holography or focal series or ptychography have tried to reconstruct the electron waves functions at the exit surface of the observed objects, but their results and applications were quite limited or, […] >>

The precise knowledge of magnetic properties of ferromagnetic materials is necessary for the optimum design of space cryocoolers. Adiabatic magnetization refrigerators (ADR) achieve temperatures lower than 100 mK (-273°C), which are necessary for the space detectors to achieve a high sensitivity necessary to astrophysics observations. Magnetic fields on the order of 1 T are generated […] >>

Up to now transmission electron microscopy (TEM) was more focused on producing images or diffraction patterns of objects. Of course, some pioneering techniques like holography or focal series or ptychography have tried to reconstruct the electron waves functions at the exit surface of the observed objects, but their results and applications were quite limited or, […] >>