Next Thursday, September 22, we organize a (mini) symposium on light-matter coupled materials that will take place at 2pm in the salle de Conférences of ISIS, with the following speakers :

• 2pm, Prof. Joël Bellessa (University of Lyon, France) : “Extended hybridization and energy transfer in multimaterial polaritonic metasurfaces”

• 2.45pm, Prof. Tal Schwartz (University of Tel Aviv, Israel) : “Entangling Electromagnetic Modes by Mutual Coupling with Molecules“

(3.30pm Coffee break)

• 3.45pm, Prof. Abraham Nitzan (University of Pennsylvania, USA): “Molecules in optical cavities: Electron transfer and transmission, Polaritons, vibrational strong coupling and collective response“

• 4.30pm, Dr. Aloyse Degiron (University of Paris Cité, France): “Opportunities for optoelectronics with colloidal nanocrystal assemblies weakly coupled to their environment”

For more details about the talks, you can download the program here.

Today, we have the pleasure to welcome Pr Hiroshi Fukumura (KU Leuven, Belgium, & Tohoku University, Japan) who will give a talk at 11am in the Salle de Conférence of ISIS, entitled

“Liquid-liquid phase separation dynamics: hierarchy from molecular level to continuous bulk”

Here below you can find the abstract of his talk :

Pulsed laser induced liquid-liquid phase separation has been studied with various time-resolved techniques. Time-resolved Raman spectroscopy and fluorescence spectroscopy revealed molecular level changes immediately after the laser pulses up to 1 . Ultrafast imaging under conventional microscopes showed macroscopic changes started 10 after the laser pulse. The macroscopic phase separation seemed to follow spinodal decomposition described by Kahn-Hilliard theory. It is, however, yet unclear what occurs in the time range between 1 and 10 . Recently we have succeeded in observing this time range with time-resolved structured illumination as well as optical diffraction techniques. Possible explanation of our results would be that mesoscopic entities like micelle-like structures mediate between molecular level changes and macroscopic spinodal decomposition. Related topics like liquid-liquid phase separation in living cells, critical Casimir force in binary liquids, laser ablation and implantation of polymer surfaces may be introduced.