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Research & Technology News
Narrow Spectrum Blue Light Images Progressive Effects of Fire
GAITHERSBURG, Md., July 24, 2018 — A simple method for increasing visibility through clean-burning flames, using ordinary blue LED light, could lead to new opportunities to perform optical metrology in fire research. The method combines narrow-spectrum, blue illumination, and matched optical filters to reduce the influence of optical emissions from a glowing hot target and a large natural gas diffusion flame. Researchers placed a target object behind a gas-fueled test fire and illuminated it in three ways: by white
Engineers Create New Tunable Laser Materials
LA JOLLA, Calif., July 24, 2018 — Engineers doped alumina (Al2O3) crystals with neodymium (Nd) ions to develop a new laser material capable of emitting ultrashort, high-power pulses. Their approach to materials processing resulted in a Nd-Al2O3 laser gain medium that has 24×...
Open Access to Medical Imaging Dataset Could Advance Computer-Aided Detection
BETHESDA, Md., July 23, 2018 — Researchers announce the open availability of the largest CT lesion-image database accessible to the public. DeepLesion, created by a team from the National Institutes of Health (NIH) Clinical Center, could help foster the development of...
Optically Levitated Nanodumbbell Could Further Study of Quantum Mechanics
WEST LAFAYETTE, Ind., July 23, 2018 — Using levitated optomechanics, a man-made rotor has been created that can spin at 60 billion revolutions per minute. Such ultrafast rotation could be used to study material properties and probe vacuum friction. Researchers from Purdue University...
IR Sensor Could Measure Drug Efficacy, Aid Drug Discovery
BOCHUM, Germany, July 20, 2018 — Using an IR sensor, researchers have analyzed which active agents affect protein structure and how long the effect lasts. The method they used could one day be applied to the quick and targeted development of drugs with fewer side effects. Developed...
AIM Summer Academy on Integrated Photonics Takes Place July 23-27 at MIT
CAMBRIDGE, Mass., July 20, 2018 — Next week, more than 60 women and men from around the world will gather in Cambridge, Mass., for a week of intensive short courses on integrated photonics. The AIM Summer Academy, which runs from July 23-27 at Massachusetts Institute of Technology...
Stanford Nears All-Optical Artificial Neural Network
STANFORD, Calif., July 19, 2018 — Researchers have shown that it is possible to train artificial neural networks directly on an optical chip. The research demonstrates that an optical circuit can perform a critical function of an electronics-based artificial neural network, and that...
Design Rules for Building Efficient Organic Solar Cells
LINKÖPING, Sweden, July 19, 2018 — Twenty-five researchers from seven research institutes in Europe, the U.S., and China have collaborated to draw up rules for designing high-efficiency organic solar cells. The design rules, which challenge some previously held ideas, have been...
Selective Light Transmission Could Advance Optical Computing
CHAPEL HILL, N.C., July 19, 2018 — A new way to select and send light of a specific color over long distances has been applied to development of a nanoscale “light switch” for turning on and turning off the transmission of one color of light. The technique, which uses...
Single-Photon Source Could Help Secure Quantum Data
SHEFFIELD, England, July 18, 2018 — Researchers have found a way to generate very rapid single-photon light pulses, a discovery that could be used to secure quantum data transfer. Single-photon pulses offer data security, because any attempt to intercept the data can be detected...
Device Offers Quantum-Compatible Link Between Microwave, Optical Domains
BOULDER, Colo., July 18, 2018 — A device that uses a small plate to absorb microwave energy and bounce it into laser light could provide a solution for sending quantum signals over long distances. Scientists at JILA, a joint institute of the University of Colorado Boulder and the...
Superman’s Heat Vision Inspires Ocular Lasers
Jul 17, 2018 — In the classic comic-book narrative, one of Superman’s many powers was “heat vision,” an ability to store solar energy in his eyes and emit it in fiery optic blasts, which were graphically depicted as lasers. As with so much of yesteryear’s science...
Nanoscope’s 3D Superresolution Reveals Alzheimer’s Source
WEST LAFAYETTE, Ind., July 17, 2018 — A superresolution nanoscope could enable 3D imaging of amyloid plaques — a characteristic feature of Alzheimer’s disease — with up to 10 times greater detail than conventional microscopes. Researchers at Purdue University combined active shaping of...
Fluorescent Fish Genes Could Help Uncover Source of Pediatric Cancer
HOUSTON, July 17, 2018 — A transgenic zebrafish that produces fluorescent tags in migratory embryonic nerve precursor cells could help lead researchers to the origins of neuroblastoma, a pediatric cancer in which malignant cells form in immature nerve tissue. Undergraduate...
Liquid-Based White LEDs Achieve High Luminous Efficiency
ISTANBUL, July 16, 2018 — Quantum dot (QD) white LEDs that show a luminous efficiency of 105 lm/W have been developed. The QDs are liquid-based and, according to researchers, could help the LEDs achieve an efficiency double that of LEDs that incorporate quantum dots in solid...
Researchers Develop Tough Photopolymers for 3D Printing
VIENNA, July 16, 2018 — A new approach to producing tailored methacrylate-based photopolymers has been developed. This approach, which does not slow down the light curing process, could lead to tough photopolymers for 3D printing and biomedicine. The new approach by a team...
Kirigami-Inspired Technique Manipulates Light at Nanoscale
CAMBRIDGE, Mass., and BEIJING, July 13, 2018 — Researchers have applied the principles of kirigami — the traditional art of paper folding and cutting — to the fabrication of advanced 3D nanodevices for manipulating light. The team believes that “nanokirigami” could offer...
LED Lights Reduce Bird Deaths from Fishing by 85 Percent
EXETER, England, July 12, 2018 — Researchers report that illuminating fishing nets with LED lights could reduce the number of seabirds that die from getting caught in nets by more than 85 percent. Fishing net with LED lights. Courtesy of ProDelphinus. Researchers from the...
Plasmonic Patch Boosts Fluorescence for Biosensing, Bioimaging
ST. LOUIS, Mo., July 12, 2018 — To strengthen weak signals in fluorescence-based detection and imaging techniques, researchers have developed an inexpensive plasmonic patch that can increase fluorescence intensity up to 100×. The patch, about a centimeter square, is based on...
Hollow Glass Whispering Gallery Resonator Improves Nanoparticle Detection
OKINAWA, Japan, July 11, 2018 — A newly fabricated whispering gallery resonator (WGR), in the form of a tiny glass bubble just a hair’s breadth wide, has demonstrated the ability to detect the presence of minute particles more effectively than existing WGRs. The hollow glass...
Laser Experiments Reveal New Insights into Metal Core at Center of Earth
EDINBURGH, Scotland, July 11, 2018 — Using high energy laser beams and optical sensors, a scientific team from the University of Edinburgh conducted experiments to replicate conditions at the Earth’s core. Scientists observed the behavior of nitrogen samples at more than one...
Luminescent Lighting Supports Arctic Greenhouse
TOMSK, Russia, July 10, 2018 — In an autonomous greenhouse being piloted for Arctic conditions, scientists are testing the use of polycrystalline luminescent materials for lighting. Since these materials efficiently convert UV radiation into visible, high-thermal characteristics,...
National Ignition Facility Sets New Laser Energy Record
LIVERMORE, Calif., July 10, 2018 — Lawrence Livermore National Laboratory’s (LLNL) National Ignition Facility (NIF) laser system has set a new record, firing 2.15 MJ of energy to its target chamber. This is a 15 percent improvement over NIF’s design specification of 1.8...
OLED Surpasses 100 Percent Exciton Production Efficiency
FUKUOKA, Japan, July 10, 2018 — In a new approach to improving OLED efficiency, researchers are using singlet fission to split the energy of one exciton in two. This approach has made it possible for the team to exceed the 100 percent limit for exciton production efficiency in...
Ultralow-Noise Amplifiers Show Exceptional Reach for High-Speed Optical Communications
GOTHENBURG, Sweden, July 9, 2018 — The reach and capacity in today’s fiber optical transmission links are limited by the accumulation of noise (originating from optical amplifiers in the link) and by the signal distortion from nonlinear effects in the transmission fiber. In...
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