News : Technological challenges
January 01 2023
iDentification of pathogenic bacteria and determination of their viability status by Raman microSpectroscopy coupled to isoTopic labelling (DATASET)
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 […] >>
January 01 2023
Programmable electromagnetic (meta)surfaces at sub-THz frequencies
Spatiotemporal manipulation of the near- and far-electromagnetic (EM)-field distribution and its interaction with matter in the THz spectrum (0.1-0.6 THz) is of prime importance in the development of future communication, spectroscopy, imaging, holography, and sensing systems. Reconfigurable Intelligent (Meta)Surface (RIS) is a cutting-edge hybrid analogue/digital architecture capable of shaping and controlling the THz waves at […] >>
January 01 2023
Compton based high sensitivity gamma imaging
Emission imaging is a medical imaging modality using radiopharmaceuticals, enabling to retrieve functional information. It is highly specific and sensitive to very small concentrations of the tracer. However, current instruments like scintillation cameras measure only a small fraction of emitted photons. Positrons cameras are more sensitive but limited to beta+ emitters. Recent improvements in the […] >>
January 01 2023
Study, modeling and development of infrared detectors in the range 8-12µm based on antennas and nano diodes
The thesis concerns the study, modeling and development of infrared detectors based on antennas and MIM (Metal-Insulator-Metal) nanodiodes in the range 8-12 µm. These devices will operate at room temperature and will be manufactured in the CEA-LETI clean room. The student began his thesis work with a theoretical study of the behavior of dielectric and […] >>
January 01 2023
Proximity effects between 2D materials and ferroelectrics
For their atomic thinness and exceptional electronic properties, 2D materials like graphene and transition metal dichalcogenides (TMD) are promising materials to build new compact and energy efficient electronic and spintronic devices. A key property of those materials is their two dimensional character which makes them highly sensitive to their environment. Thus, it offers the key […] >>