News : Engineering sciences
January 01 2023
Management of Spectre and Meltdown information leaks in a RISC V application processor
Since 2018 and the announcement of the Spectre and Meltdow vulnerabilities, the hard-won performance gains of desktop and server processors over the past few decades have been called into question. These vulnerabilities effectively exploit the speculative and out of order execution found in all modern processors to gain in the number of instructions performed per […] >>
January 01 2023
Development of new blue emitting organic molecule based on the hyperfluorescence
The focus today is on high luminance of the microdisplays to meet the requests for AR/VR application. The performance of current OLEDs, in terms of luminance and lifetime, especially for blue, have great difficulty in meeting these high luminance specdifications. Improvements in the efficiency and lifetime of the blue emitter are therefore mandatory. Fluorescent emissive […] >>
January 01 2023
Cryopenic control electronics dedicated to the control of a matrix of qubits
The recent improvements of quantum bits (qubit) based on electron spins pave the way towards their massive integration into the possible quantum processor of the future quantum computer. The individual biasing, manipulation and reading of particular qubits of the matrix is a key point that forges strong links between physicists and electronics engineers. More specifically, […] >>
January 01 2023
Development of a dilution refrigerator for space applications
In order to study the fundamental properties of Universe, it is necessary to measure very small intensity signals in a wide range of frequencies. To capture such a signal, the detectors matrices are generally cooled down to temperature of the order of 100 mK. In order to reach those temperature levels, a dilution refrigerator dedicated […] >>
January 01 2023
Experimental analysis of a new perovskite material for medical radiography: structural properties, doping, and electro-optical performances
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 […] >>