C2N – News

First laser effect observed in germanium direct bandgap

Dec. 14, 2018 - Moustafa El Kurdi

A collaboration of researchers from C2N and STMicroelectronics has obtained, for the first time, a laser effect with germanium as active material thanks to direct alignment of the electronic band diagram. Until now, this material was known to be ...

Taming sound at the nanoscale

Oct. 30, 2018 - Martin Esmann

Physicists have proposed a new way to control the propagation of sound at the nanoscale. They put in evidence new ways of trapping sound at the interface between two chains of nano-resonators. Topology offers new degrees of freedom ...

Observing the growth of crystals in a transmission electron microscope

Oct. 30, 2018 - Jean-Christophe Harmand

A unique instrument has been developed to grow nanocrystals by molecular beam epitaxy in a transmission electron microscope. The crystal formation is observed in situ and in real time with the atomic resolution. Nanotechnology uses nano-sized crystalline materials ...

Coupled nano-oscillators capable of recognizing vowels according to a learning rule

Oct. 30, 2018 - Damien Querlioz

Physicists have succeeded in fabricating a network of four coupled nano-oscillators capable of recognizing spoken vowels by tuning their frequencies according to an automatic rule of real-time learning. They show that high experimental recognition rates are a result of ...

Photonic integrated circuits for gas detection

Oct. 25, 2018 - Delphine Marris-Morini

News (in French) from Institut des sciences de l'ingénierie et des systèmes (INSIS) of CNRS - 15 october 2018 Mid-infrared (mid-IR) spectroscopy is a nearly universal way to identify chemical and biological substances. Researchers from the Centre de ...