Researchers at the University of the Witwatersrand in Johannesburg, South Africa, have demonstrated a record setting quantum protocol for sharing a secret amongst many parties.
Researchers have advanced a new way to see into the ocean's depths, establishing an approach to detect algae and measure key properties using light. A paper published in Applied Optics reports using a laser-based tool, lidar, to collect these measurements far deeper than has been typically possible using satellites.
"Core-shell" clusters pave the way for new efficient nanomaterials that make catalysts, magnetic and laser sensors or measuring devices for detecting electromagnetic radiation more efficient.
An international research team with Prof. Cornelia Denz from the Institute of Applied Physics at the University of Münster (Germany) develop for the first time light fields using caustics that do not change during propagation. With the new method, the physicists cleverly exploit light structures that can be seen in rainbows or when light is transmitted through drinking glasses.
Increase in light extraction efficiency will benefit energy savings amid overwhelming usage of LEDs in today's world. Towards this goal, scientists from IIT Guwahati and Imperial College London invented a 'meta-grid', a tailored layer of plasmonic nanoparticles, for introducing into the epoxy casing of an LED. Their technique revealed optimal design parameters for such meta-grids to produce greater light output over any narrow/broadband emission spectrum, besides boosting LEDs' lifetime by reducing unwanted internal reflection losses.
Even after all of their symptoms are gone, people who have had a concussion take longer to regain complex reaction times, the kind you need in most real-life driving situations on the road, according to a preliminary study released today that will be presented at the American Academy of Neurology's Sports Concussion Virtual Conference from July 31 to August 1, 2020.
Scientists have found that a physical property called 'quantum negativity' can be used to take more precise measurements of everything from molecular distances to gravitational waves.
Many compact systems using mid-infrared technology continue to face compatibility issues when integrating with conventional electronics. Black phosphorus has garnered attention for overcoming these challenges thanks to a wide variety of uses in photonic circuits. Research published in Applied Physics Reviews highlights the material's potential for emerging devices ranging from medical imaging to environment monitoring, assessing progress in different components of the chips, from light detection to laser emission.
Materials scientists at Rice University and the University of Pennsylvania are calling for a collective, global effort to fast-track the mass production of 2D materials like graphene and molybdenum disulfide.
"We thought we knew almost everything about photoreceptors, but we have proved that is not the case". With these words, Vincent Torre, Professor of neurobiology of SISSA, comments the results of a new study that, thanks to a multidisciplinary approach and to the use of optical tweezers, reveals for the first time the sensitivity of nerve cells present on the retina to mechanical stimuli and opens up new questions on how they function. The work has been published in PLOS Biology.