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Research & Technology News

Team Uses Plasmonics to Improve QD LED Efficiency
DAEJEON, South Korea, Feb. 14, 2018 — Researchers have designed metallic nanostructure substrates that can lower production cost while improving the efficiency of quantum dot (QD) LEDs. For their design, the team exploited the phenomenon of so-called surface plasmonic resonances when nanoscale metallic structures are exposed to light. To enhance the fluorescence intensity of the QD LEDs, the team from Korea Advanced Institute of Science and Technology (KAIST) used different metallic nanostructures for each QD LED. Silver
Silicon Quantum Chip Brings Quantum Computation Closer
DELFT, Netherlands, Feb. 13, 2018 — Scientists have shown that a single electron spin and a single microwave photon can be coupled on a silicon chip. This coupling theoretically could make it possible to transfer quantum information between a spin and a photon. Quantum computation...
Quantum Dots Catalyze Polymer Creation
HOUSTON, Feb. 13, 2018 — Using semiconductor quantum dots (QDs) as a catalyst for light-mediated radical polymerization, materials scientists are exploring a stable and economical method for making polymers that could be used in place of molecular catalysts or expensive...
Far-UVC Light Could Safely Limit Spread of Flu, Other Airborne Viruses
NEW YORK, Feb. 12, 2018 — Continuous low doses of far-UVC light have been shown to kill airborne flu viruses without harming human tissue. Far-UVC light could offer a low-cost solution to controlling airborne microbial diseases in indoor public spaces. <br A study...
Enhanced Magnetic Dipole Source, Glass Fiber Tailor Radiation in THz Region
SYDNEY and ADELAIDE, Australia, Feb. 12, 2018 — Researchers have demonstrated an enhanced magnetic dipole source in the terahertz frequency range, a necessary step to harness the magnetic nature of light for terahertz devices. Collaborating scientists from the University of New South Wales, the...
Welding System Could Help Extend Lives of Nuclear Power Plants
OAK RIDGE, Tenn., Feb. 12, 2018 — A system for welding highly irradiated metal alloys has been developed by researchers at Oak Ridge National Laboratory and the Electric Power Research Institute (EPRI). The system, designed and installed in a hot cell at ORNL’s Radiochemical...
VNIR HSI Technology Can be Integrated With Consumer Devices
ESPOO, Finland, Feb. 5, 2018 — A cost-efficient hyperspectral imaging (HSI) technology has been developed that could enable new artificial intelligence applications to be introduced into mobile devices, allowing for use in smart home systems. A novel hyperspectral camera,...
F-VLEDs Reduce Heat Generation, Opening Way for Biomedical Applications
DAEJEON, South Korea, Feb. 5, 2018 — Flexible vertical micro-LEDs (f-VLEDs) have been developed using anisotropic conductive film (ACF)-based transfer and interconnection technology. Thermal reliability and lifetime was improved by reducing heat generation within the thin film LEDs....
RF Reference Transmitted Over Fiber Optics Could Reduce Reliance on Atomic Clocks
SYDNEY, Feb. 2, 2018 — Researchers from a consortium of Australian institutions have demonstrated that a stable radio-frequency (RF) reference can be reliably transmitted more than 300 kilometers over a standard fiber optic telecommunications network, and used to...
Remote System Uses Video, Algorithms to Monitor Baby’s Heart Rate and Breathing
LOGAN, Utah, Feb. 1, 2018 — A technology that estimates heart rate using a video camera and software could lead to new applications in the medical equipment and consumer markets. But first, the technology will be used to help new parents rest easier by monitoring the heart and...
Magneto-Optical Q-Switched Laser Generates Unpolarized Light
TOYOHASHI, Japan, Feb. 1, 2018 — By using a technique — called q-switching — that utilizes short but high-powered pulse outputs, a laser one-tenth of the size of an American penny produced a beam that is 10 times more powerful than previously reported with larger lasers. The...
Image Sensor Imperfection Thwarts Cybercriminals’ Best Efforts
Jan 31, 2018 — The digital cameras in smartphones are built to be identical for each model of phone. However, manufacturing imperfections create tiny variations in each camera’s image sensors. These imperfections could prevent identity theft more safely than...
Ordering Discovery Could Help Overcome Limitations to InGaN Material Systems
BERLIN, Jan. 31, 2018 — An international research group has discovered the core mechanism that limits the indium (In) content in indium gallium nitride (InGaN) thin films, a key material for making blue LEDs. In an effort to push the indium content to the limit, scientists...
Microchip Shows Promise for Ultrasmall Smart Vision Systems and IoT Apps
SINGAPORE, Jan. 30, 2018 — Scientists have developed a microchip that can capture visual details from video frames at extremely low power consumption. According to the research team, the video feature extractor uses 20 times less power than existing best-in-class chips. The...
Phototherapy Treats Metastatic Disease Using Light-Sensitive Drugs
ST. LOUIS, Jan. 30, 2018 — A new study could expand the use of phototherapy for treating metastatic disease. Researchers have demonstrated the treatment of disseminated cancer by delivering photoactivatable drugs within tissues and inside cells in vivo. Light emitted as part...
Silicon Nanoblock Arrays Create Vivid Colors With Subwavelength Resolution
OSAKA, Japan, Jan. 30, 2018 — Researchers have demonstrated precise color control using monocrystalline silicon. Their work exploits the resonance of silicon materials to enable high reflectance and purity of color. A research team from Osaka University developed a silicon...
Multiwall Carbon Nanotube Rectennas Get an Efficiency Boost
ATLANTA, Jan. 29, 2018 — The research team that announced the first optical rectenna in 2015 reports that it has improved multiwall carbon nanotube (MWCNT) rectennas by creating and optimizing new diode structures that allow optical rectification with air-stable devices....
'Quantum Cocktail' Provides Insight Into Magnetic Storage
ZÜRICH, Jan. 29, 2018 — To speed up the writing and readout of magnetic information from storage devices, researchers are exploring the use of ultrashort laser pulses that can switch magnetic domains in solid-state materials. Although this route shows promise, the large...
Method Analyzes Encrypted FPV Data to Detect Unauthorized Drone Filming
BEER-SHEVA, Israel, Jan. 26, 2018 — Researchers have demonstrated a method for detecting whether a drone camera is illicitly recording a targeted subject or private home. Previous studies have shown methods for detecting whether a drone is nearby; however, according to the team, none...
Bright Light Therapy Improves Sleep in Cancer Patients
NEW YORK, Jan. 26, 2018 — Researchers investigated the effect of systematic light exposure on sleep in a mixed group of fatigued cancer survivors following primary cancer treatment. Results of the randomized controlled trial suggest that systematic bright light exposure...
Light-Splitting Greenhouse Film Could Improve Photosynthetic Efficiency
BOULDER, Colo., Jan. 25, 2018 — University of Colorado Boulder (CU Boulder) engineers have received a $2.45 million grant from the U.S. Department of Agriculture (USDA) to develop a scalable, cost-effective greenhouse material that splits sunlight into photosynthetically efficient...
Single Metalens Focuses all Colors of the Spectrum in one Point
CAMBRIDGE, Mass., Jan. 25, 2017 — Metalenses are flat surfaces that use nanostructures to focus light. These simple, flat surface lenses could replace bulky, curved lenses currently used in optical devices. Researchers at the Harvard John A. Paulson School of Engineering and Applied...
3D Printing Technique Replicates Biological Structures
LONDON, Jan. 25, 2017 — A 3D printing technique that replicates biological structures could be used for tissue regeneration and replica organs. Imperial College London researchers have developed the method using cryogenics and 3D printing techniques. Their technique...
Nonplanar Design Could Increase Display Flexibility, Resolution and Imaging Speed
THUWAL, Saudi Arabia, Jan. 24, 2018 — A newly developed transistor architecture could boost the performance of display circuitry, leading to flexible ultrahigh definition displays. The new, nonplanar design uses vertical semiconductor fin-like structures, which are laterally...
All-Si Laser Could Advance Integrated Photonics
SHANGHAI, Jan. 22, 2018 — An optically pumped all-Si distributed feedback laser has been demonstrated using active layers of high-density Si nanocrystals. The new laser provides high optical gains, overcoming the low efficiency that has been historically exhibited in Si...

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