Nanocrystals became an essential building blocks of modern optoelectronics. In the infrared, HgTe nanocrystals are used for the fabricate cameras and LEDs. In these polycrystalline materials, hopping has often been seen as a bottleneck...
Engineering an advanced material for biomedical applications requires dealing with antagonistic requirements: it must exhibit resistance to fracture AND biodegradability, remain highly hydrated AND carry hydrophobic active substances… Moreover, the creativity of chemists is...
A gold nanoparticle can be viewed as an infinitesimal point of contact that helps understanding how electrical currents behave at the nanoscale. When this nanoparticle is anchored to a surface, it behaves like a...
Growth - Organization - Interfaces / Highlights / Magnetism and Physics of spin / Transversal Topics
by Cécile Duflot · Published 29 March 2021 · Last modified 23 July 2021
MnAs is a semi-metal that has attracted considerable interest since its discovery in the early 1900s. Current research on MnAs is motivated by its applications in spintronic devices or as a magnetocaloric material. The...
Colloidal nanocrystals of inorganic perovskites CsPbX3 (X = Br, Cl, I) have been the subject of intense research activity since their first synthesis in 2015. Their exceptional optical and electronic properties, which one can...
For almost a century we have been familiar with the deformations of porous solids upon adsorption. This phenomenon occurs in the drying of concrete and alters the permeation of some porous membranes for example....
The optical properties of nanoparticles are directly related to their small size and to the electromagnetic coupling that takes place between the nanoparticles. When they are a few nanometres apart this coupling can significantly...
Highlights / Magnetism and Physics of spin / Transversal Topics
by Cécile Duflot · Published 26 November 2020 · Last modified 23 July 2021
The development of new materials systems exhibiting remarkable quantum properties at the nanometric scale – nanoparticles, ultrathin films – is a major objective for the creation of new devices for such quantum technologies as...
A crack tip is a stress concentrator. Once initiated, it keeps on growing until it has released the whole available energy. A crack in a windshield is and example of a fracture that hardly...
Nitride-based devices are common in common electronic or opto-electronic devices (white LED, blue laser diodes…). The developpement of new materials based on Alx Ga1-xN allow, by varying x, to span a large ultra-violet spectrum...
