Majed Chergui News Today

Scientists at EPFL have developed a new laser-based technique that can measure ultrafast changes in the structural symmetry of molecules, called chirality, tracking their conformational shifts in ...

Credit: Paul Scherrer Institute/Mahir Dzambegovic Researchers at the Paul Scherrer Institute PSI have succeeded for the first time in looking inside materials using the method of transient grating spectroscopy with ultrafast X-rays at SwissFEL. The experiment at PSI is a milestone in observing processes in the world of atoms. The researchers are publishing their research results today in the journal Nature Photonics. The structures on microchips are becoming ever tinier; hard disks write enti...

 E-Mail IMAGE: A pulsed beam of X-rays is incident on a diamond mask (blue), creating a grating of excitation on the sample. A laser beam (thin blue line on the right) is... view more  Credit: Ella Maru Studio (https://scientific-illustrations.com) Transient grating spectroscopy is an elegant method that uses two laser pulses to activate a medium by creating an interference pattern made of parallel stripes of excitations that can be thermal, electronic, magnetic or even structural. Th...