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(38,299 articles)
Popular News
Blue Light Can Improve Sleep, Help Brain Recover from Injury
TUCSON, Ariz., Jan. 21, 2020 — According to a University of Arizona (UArizona) study, exposure to blue light in the morning could re-entrain the circadian rhythm and improve sleep problems, leading to faster recovery from brain injury. Research has shown that the brain repairs itself during sleep. The UArizona team sought to determine whether improved sleep could lead to a faster recovery from mild traumatic brain injury (mTBI). Research technician Cami Barnes tests a blue light device. Courtesy of William
Deep Learning Enables Real-Time Imaging Around Corners
STANFORD, Calif., Jan. 21, 2020 — A team of U.S. researchers has created a laser-based system able to image around corners in real time. With further development, the system may allow self-driving cars to look around parked cars or busy intersections to see hazards or pedestrians....
Slow-Light Waveguide Provides Beam-Steering Capabilities for Lidar
YOKOHAMA, Japan, Jan. 21, 2020 — In the field of lidar, where speed is often valued above other variables, a team from Yokohama National University is using “slow light” to develop compact, easy-to-use, 3D sensors with nonmechanical beam-steering capabilities....
Marriage of Microscopy Techniques Reveals Cells’ 3D Ultrastructure
CHEVY CHASE, Md., Jan. 21, 2020 — Scientists at the Howard Hughes Medical Institute (HHMI) have combined superresolution fluorescence microscopy and electron microscopy to shed new light on the structures and organizations within cells. Superresolution fluorescence microscopy on its...
Metamaterials Extend Photonics
Jan 20, 2020 — Metamaterials — engineered to have unique photonic and other properties — can enable previously difficult or impossible-to-achieve performance. Radar or lidar steering, for instance, can be achieved inexpensively without moving parts....
Heuristic Approach Uses Photonics to Solve Complex Problems Fast
CAMBRIDGE, Mass., Jan. 20, 2020 — Researchers at MIT and the Institute of Soldier Nanotechnologies have opened the path to solving NP-complete problems with integrated photonics, by developing a heuristic algorithm dedicated to solving the NP-complete Ising problem using photonics...
Self-Heating in OLEDs Can Cause Decrease in Luminance
DRESDEN, Germany, Jan. 16, 2020 — When LEDs and transistors are connected in parallel, even slight differences in resistance can lead to imbalanced current flow. If the devices heat up, this can lead to even greater imbalances. This is especially true for OLEDs. A large-area OLED...
Majorana: The So-Called Angel Particle Was Not Discovered
UNIVERSITY PARK, Pa., Jan. 16, 2020 — A research team at Penn State, partnering with the University of Würzburg in Germany, has flagged a 2017 discovery of Majorana fermion as a false alarm. An exotic quantum state known as a “chiral Majorana fermion” is predicted in...
Tuned Resonators Allow Control of Electromagnetically Induced Transparency
ST. LOUIS, Jan. 16, 2020 — Researchers at Washington University in St. Louis have devised an optical resonator system that can be used to turn transparency on and off. The ability to manipulate electromagnetically induced transparency (EIT) without the introduction of an...
Diabetic Smart Contact Lenses Developed by South Korean Research Team
POHANG, South Korea, Jan. 15, 2020 — A research team from Pohang University of Science and Technology in South Korea (POSTECH) developed technology that allows diagnosis of diabetes and treatment of diabetic retinopathy by wearing smart light-emitting diode (LED) contact lenses.
Scientists Analyze Final Images from Cassini
LANCASTER, England, Jan. 15, 2020 — Toward the completion of its 13-year mission, which ended in September 2017, the Cassini spacecraft performed a set of orbits that brought it closer to Saturn than ever before. By passing over the planet’s polar regions at a low altitude,...
Colloidal QD Breakthrough Could Lead to Manufacturing-friendly Laser
LOS ALAMOS, N.M., Jan. 15, 2020 — Scientists at Los Alamos National Laboratory have incorporated meticulously engineered colloidal quantum dots into a new type of LED containing an integrated optical resonator, which allows the LEDs to function as lasers. The researchers...
CAREER Award Recipient to Explore Potential of Promising New Material in Optoelectronic Applications
TROY, N.Y., Jan. 14, 2020 — Sufei Shi, an assistant professor of chemical and biological engineering at Rensselaer Polytechnic Institute (RPI), is the recipient of the CAREER grant award. The National Science Foundation Faculty Early Career Development Program (CAREER) grant...
New Rules Reveal How an Object’s Scale Affects Its Interaction with Light
PRINCETON, N.J., Jan. 14, 2020 — Princeton researchers have uncovered rules pertaining to how objects absorb and emit light. Their discovery addresses how the scale of an object affects the way it interacts with light. The new rules will tell scientists how much infrared (IR) light...
Coherent Shares Rose 10% in December 2019
SANTA CLARA, Calif., Jan. 14, 2020 — Coherent Inc. (Nasdaq:COHR) saw its shares rise 10.3% over the last 30 days of 2019. The swift growth was due in part to new investments in the company’s manufacturing infrastructure as well as ongoing negotiations in international trade wars....
Deep Learning Speeds 3D Microscopic Neuroimaging
AUSTIN, Texas, and SAN DIEGO, Jan. 14, 2020 — Using deep learning techniques, researchers from the Salk Institute have developed a new microscopy approach that could make microscopic techniques used for brain imaging 16 times faster. The researchers trained their deep learning system using data...
LED Lighting Provides Energy Efficiency, But Needs Standards
NEW BRUNSWICK, N.J., Jan. 14, 2020 — With the growing popularity of LED lighting, scientists are looking to study its effects on plant growth. However, a lack of standards has made studies unreliable. While LED lighting can enhance plant growth in greenhouses, standards are needed to...
Quantum Loop Provides Testbed for Unhackable Communications
CHICAGO, Jan. 13, 2020 — Scientists from the U.S. Department of Energy’s (DOE) Argonne National Laboratory and the University of Chicago (UChicago) have launched a quantum loop, consisting of two connected, 26-mile fiber optic cables that run between Argonne and the...
Using Microwave Metamaterials in Machine Learning Speeds Object Recognition
DURHAM, N.C., Jan. 13, 2020 — A new approach to object identification, developed by researchers at Duke University and the Institut de Physique de Nice (INPHYNI), enables joint learning of optimal measurement strategies and a matching processing algorithm, and uses inferred...
Pulsed Lasers Create Optimal Cladding for Tools
Jan 13, 2020 — Lasers are versatile tools with negligible changeover times in manufacturing processes, but in some areas their uses are still suboptimal, such as in welding. Crack formation and problems with fusion of material can still occur and hinder the...
Microresonator Measures and Images Nanoparticles with High Degree of Sensitivity
ONNA, Japan, Jan. 13, 2020 — Scientists at the Okinawa Institute of Science and Technology (OIST) Graduate University have developed a light-based device that can act as a biosensor, detecting biological substances in materials, such as harmful pathogens in food. The scientists...
Laser Dermatology Pioneer Inducted into Inventors Hall of Fame
LAS VEGAS, Jan. 13, 2020 — Dr. Richard Rox Anderson, inventor of laser dermatology, is a 2020 inductee in the National Inventors Hall of Fame (NIHF). A total of 22 innovation pioneers were announced as the 2020 class of Inductees on stage at CES on Jan. 7. Dr. Richard Rox...
Active Thermal Detection Could Broaden Use of Superresolution Techniques
DAEJEON, South Korea, Jan. 10, 2020 — Be it light, sound, or an electromagnetic wave, a probe beam operates the same way — the beam gets sent ahead and a wave of the same nature is reflected back. The absorbed energy is converted to heat, for which there has been no perceived use...
SPIE Announces 2020 Fellows
BELLINGHAM, Wash., and CARDIFF, Wales, Jan. 9, 2020 — SPIE, the international society for optics and photonics, has announced 72 members as new fellows of the society for 2020. Fellows are members of the society who have made significant scientific and technical contributions in the multidisciplinary...
NIST Proposes New Definition for Optical Watt
GAITHERSBURG, Md., Jan. 9, 2020 — Researchers at the National Institute of Standards and Technology (NIST) seek to develop a more precise definition for the standard unit of light power, the optical watt. Instead of the current definition, which is based on comparisons to electrical...
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