Quantum sciences and materials / QMat mini-symposium

Program :

09h00-09h30: Iann Gerber (LPCNO Toulouse)
Theoretical exploration of exciton-exciton interactions in 2H-transition metal dichalcogenide bilayers

09h30-10h00: Vincent Jacques (L2C, Montpellier)
Quantum sensing with spin defects in hexagonal boron nitride

10h00-10h30: Coffee break

10h30-11h00: Clément Faugeras (LNCMI, Grenoble)
Magneto-Raman scattering of a frustrated van der Waals magnet

11h00-11h30: Cyriaque Genet (ISIS, Strasbourg)
Taming a Maxwell’s demon for experimental stochastic resetting

The abstracts are available there.

Seminar DON / Axis 2 presented by Pr. Keiichi INOUE

Speaker : Pr. Keiichi INOUE (Functional Materials Group, The Inst. for Solid State Physics, University of Tokyo)

Rhodopsins, or retinal proteins, are light-sensitive membrane proteins, with very important biological functions. In vertebrates, rhodopsins are the sensors for vision. 

Pr. Inoue is a world-leading expert in the photochemical studies of microbial retinal proteins (https://www.icpworldcongress.com/keiichi-inoue). His research aims at a detailed molecular understanding of how the different biological functions of these rhodopsins are encoded in the structural and spectroscopic properties. The abstract can be found : here

Contact: Stefan Haacke (stefan.haacke@ipcms.unistra.fr)

Seminar DCMI and Axes 3 and 5 : presenetd by Raquel UTRERA MELERO

Abstract : Materials exhibiting luminescence stimuli-responsive properties, present potential application as detection systems. Among these materials, copper (I) iodide molecular clusters coordinated by phosphine ligands, exhibit thermochromic and mechanochromic luminescence properties. These compounds are characterized by a change of their emission wavelength in response to temperature or mechanical stress. The establishment of structure- properties relationships permit to study the mechanisms responsible for their properties. The main characterization techniques used are solid-state NMR, X-ray diffraction, Infrared and Raman spectroscopies. In addition to the thermo and mechanochromic properties, these compounds have the particularity of exhibiting aggregation-induced emission (AIE) properties. The understanding of properties is crucial for applications. Therefore, DFT (Density Functional Theory) calculations are also carried out to rationalize the different results and in particular the optical properties. In the last years, copper has been proposed as a substituent in lead perovskite-based devices due to its non-toxic nature. We are currently investigating the use of copper perovskites for solar cells.