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When exposed to the sun, the human skin makes a pigment called melanin to protect itself—or so we thought! A team of researchers from around the globe (including several from INAC) recently demonstrated that, when exposed to UVA irradiation, the molecules that help synthesize melanin alter the DNA of the melanocytes (the cells that produce […] >>

Field testing of a portable pathogenic bacteria alert and identification system began a few days ago in the South of France. The system, developed by Leti and List combines lensless imaging, Raman spectrometry, and supervised classification algorithms. The system, named Bacram, was developed under the counter-bioterrorism research program of the French government’s CBRND* policy. It […] >>

Researchers at Leti recently created a photonic coupler with one waveguide made from III–V materials and another from silicon. The achievement marks an advance toward fast, accurate, low-cost multigas sensors. A complete gas testing system including waveguides would be capable of taking measurements at the liter scale, rather than at the cubic meter scale required […] >>

Thin films formed by sol-gel synthesis are not, in fact, homogeneous! Researchers at Liten’s INAC made the discovery observing an InGaZnO thin film at the ESRF, where x-ray microscopy and grazing-incidence small-angle scattering revealed the formation of mesopores and self-assembled nanometric aggregates rich in zinc and gallium. Indium oxide played the role of matrix. Now […] >>

Photonics-on-silicon components could dramatically reduce the form factor of the data switches used in telecommunications switching centers. Leti and the other partners in the Celtic-Plus SASER (Safe and Secure European Routing) project, which will run until the end of 2015, are looking at how. The project consortium presented a demonstrator made up of two 16-wavelength […] >>