News : Technological challenges

In recent years, the infrared imaging market has trended towards pixel size reduction. Interpixel crosstalk is a major limitation of small pitch devices, as it reduces the image resolution via the degradation of the modulation transfer function. The aim of this thesis is to study and fabricate pixel-level microoptics capable of reducing the crosstalk. The […] >>

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 […] >>

The identification of bacterial species is an important issue in the context of health risk assessment, but is often insufficient. but often insufficient. Indeed, the presence of VNC (Viable Non-Cultivable) bacteria poses a problem because they cannot be detected by classical microbiological techniques, which are based on techniques, which are based on the culture of […] >>

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 […] >>