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(9,094 items)
Research & Technology News
Researchers Manipulate Light to Make Optical Chip Invisible
BEER-SHEVA, Israel, Dec. 4, 2017 — Researchers have conceived a method that deflects and scatters light away from a ‘cloaking’ chip surface so it is not detected. The scattering fields of the object located on the cloak do not interact with the evanescent field, rendering the object invisible. To design a plasmonic waveguide-based invisibility cloaking scheme, Ben-Gurion University of the Negev (BGU) researchers performed an analysis of the modal distribution and surface intensity in a channel photonic
Visible Light Controls Chemical Reaction Pathways, Could Be Industrial UV Alternative
BRISBANE, Australia, Dec. 4, 2017 — A technique has been developed that modulates visible colored light to enable it to control the reactions of chemical coupling agents. The modulation of the reactivity by light is reversible, and the individually addressable reaction pathways can be...
Four-Wave Mixing Paves Way for Optical Computing
LONDON, Dec. 4, 2017 — Researchers have reduced the distance over which light can interact by 10,000 fold by performing efficient four-wave mixing (FWM) over micrometer-scale interaction lengths at telecommunications wavelengths on silicon. Their work could advance...
High-Intensity Photon Beams May Work in Large-Scale Laser Facilities
GOTHENBURG, Sweden, Dec. 1, 2017 — A scientific team has identified the numerical models and analytic estimates for simulating ultra-strong gamma rays in a highly efficient way. According to the team, these high intensity gamma rays significantly exceed all known limits. While there...
Solar Farms in China Masquerade as Pandas
Dec 1, 2017 — Proudly called the national treasure of China, the giant panda is the rarest member of the bear family. Among the world’s most threatened species, the panda has also become the face of global conservation efforts worldwide. In an effort to...
Quantum Optics Lead to Spectroscopy Method for Measuring on FS Timescale
MOSCOW, Dec. 1, 2017 — Scientists have demonstrated a time-resolved spectroscopy technique that enables the study of very fast processes in samples on the femtosecond (fs) time scale without the need for an fs laser or a complex detection system. The method works by...
Holographic Technique Uses Deep Learning to Increase Accuracy, Improve Microscopy
LOS ANGELES, Nov. 30, 2017 — Researchers are using deep learning, one of the key technologies behind advances in real-time speech recognition and automated image and video labeling, to reconstruct a hologram to form a microscopic image of an object. This convolutional neural...
THz Imaging Uncovers Secrets of 17th-Century Masterpiece
Nov 30, 2017 — There has long been an air of mystery surrounding paintings created prior to the 18th century and how the artists prepared their canvases, applied undercoats and eventually created their masterpieces. Researchers from Georgia Tech-Lorraine, a campus...
Pulsed Laser Irradiation Enhances Nanoplate Properties
KUMAMOTO, Japan, Nov. 29, 2017 — When gold-coated silver nanoplates are irradiated with a pulsed laser, they release silver ions which are known to produce a strong antibacterial effect. Researchers observed that silver nanoparticles (AgNPs) — known to have antibacterial...
Coupling Perovskite to Nanophotonic Cavities for More Efficient Optoelectronics
COLLEGE PARK, Md. and ZÜRICH, Nov. 29, 2017 — To boost the efficiency of perovskite as a light source for optoelectronics, researchers coupled lead halide perovskite nanocrystals to a nanophotonic cavity at room temperature. The research team drop cast perovskite nanocrystals in toluene...
Wave Mixing on Artificial Atom Could Be Used for Building Quantum Electronics
MOSCOW, Nov. 28, 2017 — Scientists have demonstrated quantum wave mixing (QWM) on a single superconducting artificial atom. In their exploration of the different regimes of QWM, they showed that superposed and coherent states of light were mapped into a quantized spectrum...
IR Thermal Imaging Improves Inspection of Radiation Shields
WASHINGTON D.C., Nov. 24, 2017 — Researchers at the Children’s National Health System have published a story in the Journal of the American College of Radiology detailing the use of IR thermal imaging as a tool to detect defects in protective lead aprons. "When I researched...
Prism Awards Mark Decade of Innovation
BELLINGHAM, Wash., and PITTSFIELD, Mass., Nov. 22, 2017 — The world’s smallest FT-IR spectrometer, a lidar system for autonomous vehicles, and a smartphone add-on sensor for noncontact bioimaging — these products are among 30 finalists vying for Prism Awards in January. Marking its 10th year in...
Optical Whispering Gallery Mode Resonator Spins Light
STATE COLLEGE, Pa., Nov. 22, 2017 — An optical whispering gallery mode resonator developed by Penn State electrical engineers can spin light around the circumference of a tiny sphere millions of times, creating an ultrasensitive microchip-based sensor for multiple applications....
Team Taps Chalcogenide For Flexible Devices
CAMBRIDGE, Mass., Nov. 20, 2017 — A method for making photonic devices that can bend and stretch without damage could find uses in cables to connect computer devices, or in diagnostic and monitoring systems that could be attached to the skin. A new material produced by Juejun Hu and...
Doping Quantum Dots Helps Lasers Release Light More Efficiently
LOS ALAMOS, N.M., Nov. 17, 2017 — Doping quantum dots (QDs) with additional electrons has been found to cause the specially designed QDs to produce laser light with less stimulation and less energy loss. By adding extra charge carriers to their QDs, researchers from Los Alamos...
Ultrafast Pulses Coherently Control Function in a Living Cell
CHAMPAIGN, Ill., Nov. 17, 2017 — Researchers have used light to excite a light-sensitive channel in the membrane of optogenetic mouse neurons. When the channels were excited, they allowed ions through, which caused the neurons to fire. The researchers say the same technique could...
Handheld Spectrometer Wirelessly Transmits Data to Smartphone
HAIKOU, BEIJING and HANGZHOU, China, Nov. 17, 2017 — A wireless handheld spectrometer that is smartphone-compatible could make it easier and more economical to acquire spectral images of everyday objects and in the future could be used for point-of-care medical diagnosis in remote locations. The...
Bioinspired Approach Could Enhance Solar Cell Light Absorption
KARLSRUHE, Germany, Nov. 16, 2017 — By observing the nanostructures that optimize light absorption on a black butterfly’s wing, researchers were guided to a way to improve light harvesting in thin-film solar cells, potentially increasing light absorption rate in cells by as much...
NIH Team Improves 3D Imaging Efficiency, Speed and Resolution
WASHINGTON, D.C., Nov. 15, 2017 — Researchers have developed a technique that improves the spatiotemporal resolution and collection efficiency of light-sheet fluorescence microscopy (LSFM), without modifying the underlying microscope. The technique instead uses reflection to improve...
Autonomous Forklifts use Advanced Computer Vision and Artificial Intelligence
LINCOLN, England, Nov. 14, 2017 — A fleet of autonomous self-optimizing forklift trucks could work alongside human co-workers and automatically adapt to changing work demands. Robotics specialists in the U.K., Sweden, Italy and Germany are working together to bring next generation...
LED-Based UV Light Can Rapidly Convert 3D Printing Polymeric Inks Into Solids
NOTTINGHAM, England, Nov. 14, 2017 — A breakthrough in rapid additive manufacturing that involves UV light solidifying the inks used could pave the way for fully functional 3D printed electronic circuits. Researchers at the University of Nottingham have pioneered the breakthrough and...
Superconducting Nanowire Single-Photon Detector Sets Efficiency Record
SHANGHAI, Nov. 13, 2017 — Researchers have demonstrated the fabrication and operation of a superconducting nanowire single photon detector (SNSPD) with detection efficiency that they believe is the highest on record. The photodetector is made of polycrystalline NbN with...
Visible LEDs Enable Sensor Response Activation at Room Temperature
MOSCOW, Nov. 13, 2017 — Scientists have discovered a mechanism that allows hydrogen sensors to work under visible light, without heating, therefore enabling the sensor to work at room temperature. The discovery, based on nanocrystalline metal oxides, could reduce the...
Humboldt, PicoQuant Host MSCA, BE-OPTICAL Researcher
BERLIN, Nov. 13, 2017 — Humboldt University Berlin and optoelectronics developer PicoQuant are co-hosting an early stage researcher (ESR) within the framework of the Marie Sklodowska-Curie actions (MSCA) of the Innovative Training Networks H2020 BE-OPTICAL training...
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