News : Materials and applications

X-rays is the most widely used medical imaging modality for the detection of pathologies, the monitoring of their evolution and during certain surgical procedures. The objective of this thesis is to study a new semiconductor material based on perovskites for direct X-ray detection. A thesis is running since October 2022 at CEA on the development […] >>

Description of the project: Semiconductor piezoelectric nanowires (NWs) (GaN and ZnO among others) have improved piezoelectric properties compared to thin films and bulk materials, due to their greater flexibility and sensitivity to lower forces. An intrinsic improvement in piezoelectric coefficients has also been identified by recent theoretical and experimental studies [1, 2]. These NWs can […] >>

The in situ characterization of battery materials is needed to help designing safer and more efficient electrochemical devices. In particular, following in real-time the lithiation and ageing mechanisms require to use advanced non-destructive tools capable to probe the system during cycling. In this regard, synchrotron and neutron techniques provide unique capabilities to access the chemical, […] >>

Topic: The development of semiconductor nanowires (NWs) is of great basic and technological interests owing to their high aspect ratio at nanoscale dimensions, giving rise to novel, remarkable properties, as well as a broad range of potential applications. Among them, ZnO as an abundant and biocompatible compound semiconductor with attractive properties has been receiving increasing […] >>

CONTEXT Among the various emerging devices expected to replace conventional Flash memories, Resistive Random Access Memories (ReRAM) are currently attracting a strong scientific and industrial interest. Their operations are based on the switching between a low resistive and a high resistive state, which represents the two binary states. ReRAM devices have already demonstrated significant advantages […] >>