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Research & Technology News

Laser-Printed Plasmonic Arrays Boost IR Emission of Colloidal Quantum Dots
VLADIVOSTOK, Russia, Feb. 7, 2020 — Semiconductor quantum dots (QDs) that emit light in the near- and mid-infrared (IR) spectral ranges have the potential to power a range of optical devices. However, fundamental physical limitations decrease the intensity of IR-emitting QDs. At longer wavelengths, the quantum yield of such QDs decreases as the radiative emission rate drops following Fermi’s golden rule, while nonradiative recombination channels compete with light emission. Scientists from Far Eastern Federal
Researchers Synthesize Nanosize Semiconductors in a Plasmonic Nanoantenna
SAPPORO, Japan, Feb. 7, 2020 — Researchers at Hokkaido University have developed an approach to placing nanoscale semiconductors on metallic particles that is precise and cost-effective. Heat is localized on a gold nanoparticle within a butterfly-shaped nanostructure. The heat...
Pseudo-Random Speckle Illumination Patterns Allow for High-Resolution Imaging
TOKYO, Feb. 6, 2020 — Researchers at the University of Tokyo have demonstrated the use of a multimode fiber (MMF) in combination with an integrated optical phased array (OPA) chip for single-pixel imaging in potential biomedical applications. The technology could allow...
1D Analogs of 2D Heterostructures Could Find Multiple Applications
TOKYO, Feb. 6, 2020 — Technological devices are becoming smaller and more feature-rich in part because scientists are exploring new materials and new ways to use existing materials. One area being investigated by materials scientists is the function of flat...
Light-Responsive Material Could Provide Basis for All-Optical Computing
HAMILTON, Ontario, Feb. 6, 2020 — A platform that could potentially be used for all-optical computing has been developed through a collaboration between researchers at McMaster University and the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS). The...
Flickering Light Mobilizes Brain Chemistry That May Fight Alzheimer’s
ATLANTA, Feb. 5, 2020 — Previous experiments using flickering light to treat neurodegenerative disease have shown promise, and now, researchers at the Georgia Institute of Technology (Georgia Tech) may have discovered how the flicker works. They found that exposure to...
FS-Laser-Based Technology Creates Solar Power Generators
ROCHESTER, N.Y., Feb. 5, 2020 — A University of Rochester research team has demonstrated that the laser-based technology it used to create unsinkable metallic structures can also be used to create highly efficient solar power generators. The researchers used femtosecond (fs) laser...
Quantum Logic Spectroscopy Improves Atomic Measurements by Factor of 100 Million
BRAUNSCHWEIG, Germany, Feb. 4, 2020 — Scientists from the Physikalisch-Technische Bundesanstalt (PTB) and the Max Planck Institute for Nuclear Physics (MPIK) have enabled precise optical measurements of highly charged ions by isolating a single highly charged ion from an extremely hot...
Portable Concussion Detector Uses Infrared Light to Measure Brain Metabolism
ANN ARBOR, Mich., Feb. 4, 2020 — A new approach to detecting concussion uses a laser to deliver infrared (IR) light pulses to the brain, where the light interacts with cytochrome C oxidase (CCO), a mitochondrial enzyme important to brain metabolism. CCO is known to decrease when...
Laser-Driven X-Rays and Fluorescence Imaging Capture Details of Atomizing Sprays
LUND, Sweden, Feb. 3, 2020 — A team at Lund University observed and quantified an atomizing spray by recording x-ray absorption while using two-photon laser-induced fluorescence imaging. High-contrast fluorescence images provided fine details of the spray structure and...
First Images from Inouye Solar Telescope Provide Detailed Look at Sun
KULA, Hawaii, Jan. 31, 2020 — The first images from the National Science Foundation’s (NSF) Inouye Solar Telescope show a close-up view of the sun’s surface, detailing a pattern of turbulent “boiling” plasma that covers the entire sun. The cell-like...
US Department of Energy Will Fund Up to $625M for Quantum Information Centers
WASHINGTON, D.C., Jan. 31, 2020 — The U.S. Department of Energy (DOE) will provide up to $625 million in funding over the next five years to establish two to five multidisciplinary Quantum Information Science (QIS) Research Centers in support of the National Quantum Initiative. The...
New Podcast Series Will Touch on ‘All Things Photonics’
PITTSFIELD, Mass., Jan. 31, 2020 — In “All Things Photonics,” a new podcast from the publishers of Photonics Spectra magazine, host Emmett Warren holds intimate conversations with top scientists as they discuss how lasers, spectroscopy, optics, and more are being used for...
Less Complex Approach to Laser Pulse Measurement Provides Precise Information
VIENNA, Jan. 31, 2020 — Until now, a complex experimental setup was required to measure the shape of a laser lightwave with a high degree of accuracy. This measurement can now be done using a small crystal with a diameter of less than 1 mm. The new method, developed by...
Photoluminescent Polymer Detects Stress Quickly
ONNA, Japan, Jan. 30, 2020 — A new stress-detecting polymer that shines brighter when stretched could be used to measure the performance of synthetic polymers and track deterioration in materials that are used in engineering and construction. Scientists from the Okinawa...
Global BioImaging Receives $1.3M to Advance Open-access Imaging Tools
REDWOOD CITY, Calif., Jan. 30, 2020 — Global BioImaging, an international network of bioimaging facilities and communities coordinated by the European Molecular Biology Laboratory (EMBL), has received $1.3 million from the Chan Zuckerberg Initiative (CZI). The grant will support Global...
New Metahologram Design Created
POHANG, South Korea, Jan. 29, 2020 — A multifunctional meta-hologram design, developed by researchers at Pohang University of Science and Technology (POSTECH), can be used to create different hologram images depending on the direction of the incident light that falls on the device....
NY-Based Research Team to Collaborate on Quantum Research
ALBANY, N.Y., Jan. 29, 2020 — A collaborative cross-institutional research team led by Stony Brook University’s Eden Figueroa, associate professor in the Department of Physics and Astronomy, has secured a Conceptualization Grant of $150,000 from the National Science...
Researchers Introduce the First All-Optical, Stealth Data Encryption Technology
TEL AVIV, Israel, Jan. 29, 2020 — BGN Technologies, the technology-transfer company of Ben-Gurion University of the Negev, is introducing the first all-optical “stealth” encryption technology that will be significantly more secure and private for highly sensitive...
Multidimensional Quantum Communications with Legacy Fibers
JOHANNESBURG, Jan. 28, 2020 — In a new “twist” on quantum communication using optical fiber, researchers from the University of Witwatersrand (Wits) and Huazhong University of Science and Technology (HUST) have demonstrated that multiple quantum patterns of twisted...
Portable Biosensor Uses Light at Nanoscale to Detect Sepsis in Minutes
LAUSANNE, Switzerland, Jan. 28, 2020 — Time is critical when diagnosing sepsis, but the tests currently used to identify this disease can take up to 72 hours. Researchers at the Laboratory of Bionanophotonic Systems (BIOS) at École Polytechnique Fédérale de Lausanne...
Entanglement Maintained over Long Distance at Telecom Wavelengths
MUNICH, Jan. 27, 2020 — Physicists at Ludwig Maximilian University (LMU), with colleagues at Saarland University, have demonstrated the transport of an entangled state between an atom and a photon via an optical fiber over a distance of up to 20 km. According to the...
Way to Generate OAM Pulses in UV Range Could Help in Materials Research
MOSCOW, Jan. 27, 2020 — Scientists from the Skolkovo Institute of Science and Technology (Skoltech), in collaboration with researchers from the Shanghai Institute of Optics and Fine Mechanics and the Helmholtz Institute, have proposed a way to generate intense, short,...
Light-Based Chemistry Could Increase Energy Density of a Renewable Fuel
LOS ALAMOS, N.M., Jan. 27, 2020 — Researchers at Los Alamos National Laboratory used photochemical [2 + 2] cycloaddition to upgrade biomass-derived acetone — common nail polish remover — to higher-mass hydrocarbons, and produced a product that can be blended with...
Researchers Develop Record-Breaking Terahertz Laser Beam
VIENNA, Jan. 24, 2020 — A research group at TU Wien has developed a terahertz radiation source that is both efficient and creates a broad spectrum, generating different wavelengths from the entire terahertz range. Both aspects are said to have broken previously held...

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