News : Technological challenges

CEA Leti has conceived a holographic printer as part of its development of optical components and systems for the field of Augmented Reality. This printer allows us to record micro-holograms that encode elementary angular functions. The current application of the printer concern the development of pixelated holograms recorded with phase and angular matching for the […] >>

Reconfigurable Intelligent Surfaces (RISs), which consist of nearly-passive controllable devices (behaving as e.g., electromagnetic mirrors, lenses, or large sensing surfaces), have already shown promising potential to boost -or even sometimes just to enable- data communication and localization capabilities in next-generation wireless networks, while limiting the need of active base stations. Conversely, RISs could also be […] >>

Power grid is the heart of recent concerns due to climate, economic and geostrategic risks. If the safety and performance of these systems are essential subjects to study, the resilience of energy systems to cyber-attacks is an issue that cannot be ignored. Indeed, energy systems are now the target of computer attacks carried out by […] >>

Bipolar disorder is a chronic adult psychiatric disorder affecting between 0.5 and 1% of the population, with many unmet medical needs in terms of treatment. In this context, CEA-LETI’s Laboratory of Systems for the Person (LS2P) proposes to address the crucial challenge of monitoring patients in ambulatory or home conditions; The objective of the thesis […] >>

Photoplethysmography (PPG) is a non-invasive optical technique for detecting temporal variations in blood volume in tissues. PPG is used to monitor physiological parameters such as heart rate, pulse oximetry and blood pressure. PPG is a widely used method in physiological measurement systems, whether for consumer connected objects (smart watches, smartphones) or medical systems (oximeters). Even […] >>