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Research & Technology News
Entanglement-Based QKD Could Secure Optical Fiber Networks
SINGAPORE, April 8, 2019 — A technique that will help pairs of light particles smoothly navigate optical fiber networks was performed over 10 km of Singtel’s fiber network. Researchers from the National University of Singapore (NUS) and Singtel are driving the project which could strengthen cybersecurity for the networks that carry data encoded in pulses of light. The new technique deploys quantum key distribution (QKD), a technology that detects individual photons to create encryption keys for secure
Photoacoustic Microscopy Used to Image Cancer Cells
PASADENA, Calif., April 5, 2019 — Researchers at the California Institute of Technology (Caltech) are investigating ways in which to better image cancer cells by using photoacoustic microscopy (PAM), a technique that incorporates laser light to induce ultrasonic vibrations, which...
New Approach to LEDs Could Reduce Costs of Public Lighting
KARLSRUHE, Germany, April 5, 2019 — To increase LED streetlight efficiency, a team at Karlsruhe Institute of Technology (KIT) developed an array of weaker LEDs to use as an alternative to conventional high-performance diodes. Streetlights with the new light heads will be tested in the...
Researchers Control Speed of Light in Free Space
ORLANDO, Fla., April 5, 2019 — Using a technique that someday help alleviate data congestion and prevent information loss, University of Central Florida (UCF) researchers have developed a way to speed up and slow down a light pulse. The new technique allows the speed of the pulse...
Researchers Pinpoint Origin of Photons in Gamma-Ray Bursts
WAKO, Japan, April 5, 2019 — Scientists from the RIKEN Cluster for Pioneering Research and their collaborators have shown that the photons emitted by long gamma-ray bursts (GRBs) originate in the photosphere, that is, in the visible portion of the relativistic jet that is...
Muscle-Like Material Contracts When Illuminated
ST. LOUIS, April 5, 2019 — Researchers at Washington University in St. Louis (WUSTL) developed the material that in experiments showed the ability to lift a weight by simply shining a light on it. Tests are being conducted to determine the polymer’s best use, but the main...
In New Material, Color and Thermal Properties Can Be Tuned Separately
CAMBRIDGE, Mass., April 4, 2019 — Researchers at the Massachusetts Institute of Technology (MIT) have optically engineered a polymer material to allow its color and thermal properties to be tailored independently of each other. The new films simultaneously provide light weight,...
New Glass Family Demonstrates High Refractive Index, UV-Shielding Properties
STATE COLLEGE, Pa., April 4, 2019 — A novel composition of germanosilicate glass, created by adding zinc oxide, has properties that could be valuable for lens applications. The new family of zinc germanosilicate glass was invented by a research group at The Pennsylvania State...
Low-Loss, All-Fiber System Supports Coupling Between Distant Atoms
TOKYO, April 3, 2019 — A team of scientists from Waseda University, the Japan Science and Technology Agency, and the University of Auckland developed an integrated, all-fiber coupled-cavities quantum electrodynamics (QED) system, in which a meter-long portion of...
All-Dielectric Nanoantennas Enable Study of Temperature-Mediated Effects
VLADIVOSTOK, Russia, April 3, 2019 — Scientists at Far Eastern Federal University (FEFU) have devised a method for efficiently mass-producing silicon-germanium (Si-Ge) fully alloyed nanoantennas. The electron-beam lithography traditionally used for production is expensive and...
Light Therapy Could Help Prevent Vision Problems in Premature Infants
CINCINNATI, April 2, 2019 — The discovery of a light-dependent molecular pathway that regulates how blood vessels develop in the eye could lead to the use of light therapy to help premature infants, whose eyes are still developing, avoid vision problems. Called the opsin...
Computational Methods Enable Solid-State Lighting to Self-adjust
BARCELONA, Spain, April 2, 2019 — Researchers from the Catalonia Institute for Energy Research (IREC) and Ledmotive Technologies have developed a two-step approach to generate arbitrary spectral power distributions (SPDs) using multichannel LED engines. This approach could be used...
Particle Cavity Cooling Could Aid Quantum Effects Study
VIENNA, April 2, 2019 — A new method for cooling levitated nanoparticles using optical tweezers, discovered by researchers at the University of Vienna, the Austrian Academy of Sciences, and the Massachusetts Institute of Technology (MIT), could advance scientists’...
Multispectral Imaging Brings Lost Torah Text to Light
ROCHESTER, N.Y., April 2, 2019 — A University of Rochester professor uses different wavelengths of light to photograph and analyze cultural artifacts using digital imagery to salvage objects, such as the Hebrew Torah, whose legibility has deteriorated over time.
Liquid Crystals Could Help Protect Against Laser Pointer Attacks
ROMEOVILLE, Ill., April 1, 2019 — Liquid crystals could someday be used to help deflect laser pointer attacks on aircraft, regardless of the wavelength used in the attack. According to the Federal Aviation Administration, 6,754 laser strikes on aircraft were reported in 2017. The...
Metalens Design Enables Reconfigurable Imaging
EVANSTON, Ill., March 29, 2019 — A Northwestern University research team has developed an imaging platform based on fully reconfigurable metalenses. The lenses focus light by exciting surface lattice resonances that are tuned by patterned polymer blocks on single-particle sites....
New Imaging Technique Could Help Diagnose, Monitor Retinal Disease
BETHESDA, Md., March 29, 2019 — Researchers at the U.S. National Eye Institute (NEI) believe their adaptive optics indocyanine green (AO-ICG) imaging technique could be used to help diagnose and monitor the progression of eye diseases, and to preclinically detect cellular-level...
Laser-Induced Avalanche Breakdown Detects Radioactive Material Remotely
COLLEGE PARK, Md., March 28, 2019 — A new method to identify radioactive material employs an IR laser beam to detect shielded material from a distance. The method, developed by physicists at the University of Maryland, improves upon current detection technologies that require close...
Open-Source Solution Could Lower Cost of Optical Cardiography
DOLGOPRUDNY, Russia, and WASHINGTON, D.C., March 28, 2019 — An open-source solution for multiparametric optical mapping of the heart’s electrical activity, developed by an international research team, could further understanding of the mechanisms underlying cardiac arrhythmias. The 3D models of the...
Inverse-Designed Metastructures Operate with Light to Perform ‘Photonic Calculus’
PHILADELPHIA, March 27, 2019 — A research team at the University of Pennsylvania has demonstrated a metamaterial device that can function as an analog computer. Such processing typically requires complex systems of bulk optical elements like lenses, filters, and mirrors. The...
Liquid Crystal Metasurfaces Are the Heart of New Lidar Technology
SEATTLE, March 27, 2019 — Lumotive, the Bill Gates-funded startup developing lidar systems for autonomous vehicles, has introduced a disruptive beam-steering technology that aims to significantly improve the performance, reliability, and cost of lidar systems for the...
Measuring Quantum Back Action Could Improve Sensitivity of Gravitational-Wave Detectors
BATON ROUGE, La., March 26, 2019 — Researchers at Louisiana State University (LSU) have defined a broadband, off-resonance measurement of quantum radiation pressure noise (QRPN) in the audio band, at frequencies relevant to gravitational-wave detectors. The noise spectrum obtained by...
In a New Quantum Simulator, Light Behaves Like a Magnet
LAUSANNE, Switzerland, March 26, 2019 — When following the laws of quantum mechanics, systems made of many interacting particles can display behavior so complex that they cannot be quantitatively described by even the most powerful computers. In 1981, visionary physicist Richard Feynman...
Portable Photonic Crystal Biosensor Detects, Quantifies HIV in Africa
CAIRO, March 25, 2019 — Two African researchers have combined their laser expertise to develop a device that could improve the quality of treatment and life expectancy of people living with HIV. Sello Manoto, an African Laser Centre grant holder and CSIR Biophotonics...
Textile-Based Display Module Is Self-Powered, Washable
DAEJEON, South Korea, March 25, 2019 — A Korea Advanced Institute of Science and Technology (KAIST) research team has developed a textile-based wearable display module technology that is washable and does not require an external power source. The team fabricated its wearable display...
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