News :

Researchers from INAC and the Technical University of Denmark have developed a trumpet-shaped microscopic antenna that can extract 75% of the unique photons from a quantum dot and emit them in a Gaussian optical beam. The beam can then be effectively injected into an optical fiber for applications in cryptography, metrology, and quantum computing, for […] >>

Engineers from Soitec, Leti, and Germany’s Fraunhofer Institute for Solar Energy Systems have developed a four-junction concentrated solar cell with an energy conversion yield of 43.6%—with the potential to reach yields as high as 50% in the coming years. Currently the world record is a 44.4% yield, but the technology involved will soon reach its […] >>

Using advanced image restoration techniques, miscreants can now fool detection systems into thinking manipulated JPEG images are the real thing. That’s the unsettling finding of research done by four engineers from Gipsa Lab and Peking University, who won the Best Paper Award at a June conference. Existing detection systems work by spotting statistical “footprints” left […] >>

With a 10.2% energy conversion yield versus 6% for the previous generation, the dye-sensitized solar cells developed by INAC researchers have set a new standard. Their solar cells use organic dyes with an absorption coefficient some three times greater than those used in conventional dye-sensitized solar cells. And their organic dyes don’t contain ruthenium, an […] >>

Dynamic nuclear polarization (DNP)—which increases the sensitivity of nuclear magnetic resonance (NMR) by anywhere from 10 to 1,000 times—is once again making headlines. It was used by scientists from INAC and IBS to observe the cell walls of living bacteria, versus the conventional technique of looking at wall samples taken from a cell. This breakthrough […] >>