News : Engineering sciences

The development of quantum computing threatens asymmetric cryptography. To address this threat, post-quantum cryptography (PQC) schemes, i.e. based on quantum computer resistant problems, have been proposed. The third round of the NIST PQC competition ended on July 5, 2022. The CRYSTALS-Kyber algorithm was selected for standardization. The history of cryptographic algorithms standardization shows that it […] >>

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 […] >>

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 […] >>

Magnetic random access memories (MRAMs) are now on the market, in FPGAs or cache memory blocks. The concept of Perpendicular Shape Anisotropy MRAM (PSA) has been proposed to expand the MRAM market: the usual ultra-thin storage layer being replaced by a vertical magnetic pillar, allowing retention to be maintained at <10nm size and at high […] >>

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 […] >>