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“#New class of laser beam doesn’t follow normal laws of refraction” Credit: CC0 Public Domain University of Central Florida researchers have developed a new type of laser beam that doesn’t follow long-held principles about how light refracts and travels. The findings, which were published recently in Nature Photonics, could have huge implications for optical communication…
“#May the force be with you: Detecting ultrafast light by its force” Credit: McGill University A McGill research team has developed a new technique to detect nano-sized imperfections in materials. They believe this discovery will lead to improvements in the optical detectors used in a wide range of technologies, from cell phones to cameras and…
“#Researchers capture X-ray images with unprecedented speed and resolution” Researchers developed a high-resolution x-ray imaging technique based on ghost imaging that can capture the motion of rapidly moving objects. They used it to create a movie of a blade rotating at 100,000 frames per second. Credit: Sharon Shwartz, Bar-Ilan University Researchers have demonstrated a new…
“#Sulfur-containing polymer generates high refractive index and transparency” A schematic illustration showing the co-polymerization of vaporized sulfur to synthesize the high refractive index thin film. Credit: KAIST Researchers reported a novel technology enhancing the high transparency of refractive polymer film via a one-step vapor deposition process. The sulfur-containing polymer (SCP) film produced by Professor Sung…
“#Nanoparticle meta-grid for enhanced light extraction from light-emitting devices” Schematics of the classical and modified light-emitting diode (LED) device (not to scale). a Cross-sectional cartoon of a standard LED (including its electrical contacts), where an epoxy lens/casing encapsulates the semiconductor LED chip. Light emitted from the p–n junction escapes into the epoxy lens as long…
“#Physicists find misaligned carbon sheets yield unparalleled properties” Graphene is a single layer of carbon atoms arranged in a flat honeycomb pattern, where each hexagon is formed by six carbon atoms at its vertices. UT Dallas physicists are studying the electrical properties that emerge when two layers of graphene are stacked. Credit: University of Texas…
“#Faster LEDs for wireless communications from invisible light” Researchers aimed to improve LEDs that specifically communicate via deep ultraviolet light, which isn’t visible to the human eye. Credit: Kazunobu Kojima, Tohoku University Researchers have solved a major problem for optical wireless communications—the process by which light carries information between cell phones and other devices. Light-emitting…
“#New imaging system creates pictures by measuring time” Credit: University of Glasgow A radical new method of imaging that harnesses artificial intelligence to turn time into visions of 3-D space could help cars, mobile devices and health monitors develop 360-degree awareness. Photos and videos are usually produced by capturing photons—the building blocks of light—with digital…
“#Tailored light inspired by nature” The fabrication procedure of a nondiffracting of a lightfield using a desired transversed caustic. Credit: WWU – Alessandro Zannotti Modern applications such as high resolution microsopy or micro- or nanoscale material processing require customized laser beams that do not change during propagation. This represents an immense challenge since light typically…
“#Tailored meta-grid of nanoparticles boosting performance of light-emitting diodes” Schematic representation (not to scale) at the center depicts an LED with a ‘meta-grid’ of plasmonic (e.g. noble metallic) nanoparticles, which are much smaller than the wavelength of emitted light. Placing a specifically designed ‘meta-grid’, with optimized size, shape, and interparticle separation, at an appropriate height…