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RESEARCH & TECHNOLOGY NEWS
Sequestering Lead in Perovskite Cells Could Make Them Safer for Photovoltaics DEKALB, Ill., Feb. 20, 2020 — Many high-performing hybrid perovskite solar cells contain water-dissolvable lead, raising concerns over potential leakage from damaged cells. A new technique to sequester the lead used to make the cells could make them more practical for use in photovoltaic technologies. Developed by researchers at Northern Illinois University (NIU) and the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL), the technique involves the application of lead-absorbing films to the
Lensless On-Chip Microscopy Platform Shows Slides in Full View STORRS, Conn., Feb. 20, 2020 — Guoan Zheng, a University of Connecticut (UConn) professor of biomedical engineering, has published his findings on a successful demonstration of a lensless on-chip microscopy platform in Lab on a Chip. Zheng suggests his platform eliminates several...
Optoelectronic Superstructure Could Be Applied in Neuromorphic Computing ORLANDO, Fla., Feb. 20, 2020 — University of Central Florida (UCF) researchers have taken a step toward developing neuromorphic computers — computers that mimic neurobiological architectures present in the human nervous system — by demonstrating how to create a...
Vision for Primate Neuroimaging to Accelerate Scientific and Medical Breakthroughs NEW YORK, Feb. 20, 2020 — A global community of over 150 scientists studying the primate brain has released a blueprint for developing more complete “wiring diagrams” of how the brain works that may ultimately improve understanding of several brain disorders....
Lasers and THz Waves Combined in Hyperspectral Camera SUSSEX, England, Feb. 19, 2020 — A team of physicists at the University of Sussex has developed the first nonlinear camera capable of capturing high-resolution images of the interior of solid objects using terahertz (THz) radiation. Led by Marco Peccianti of the Emergent Photonics...
Quantum Interference Observed Using UV-Light Spectroscopy BREISGAU, Germany, Feb. 19, 2020 — A research team led by Frank Stienkemeier and Lukas Bruder from the Institute of Physics at the University of Freiburg observed real-time ultrafast quantum interferences, or oscillation patterns, of electrons in the atomic shells of rare gas atoms....
Electrically Driven Topological Laser Bypasses Manufacturing Imperfections SINGAPORE, Feb. 19, 2020 — Researchers from Nanyang Technological University (NTU Singapore) and the University of Leeds (UL) have created what they believe to be the first electrically driven topological laser. The new device has the ability to route light particles around...
Blue-Emitting Diode Shows Limitations and Promise of Perovskite Semiconductors BERKELEY, Calif., Feb. 18, 2020 — Scientists at the University of California, Berkeley, have created a blue light-emitting diode (LED) from halide perovskite, a new semiconductor material said to be cheap and easy to manufacture, overcoming a barrier that had previously prevented...
Graphene Formed Under Microscope Is Small Enough for Electronics HOUSTON, Feb. 18, 2020 — Scientists at Rice University; the University of Tennessee, Knoxville (UT Knoxville); and Oak Ridge National Laboratory (ORNL) used a small, visible beam mounted to a scanning electron microscope (SEM) to form laser-induced graphene (LIG), a...
Electric Fields Affect Molecular Twist Within Light-Sensitive Proteins MENLO PARK, Calif., Feb. 18, 2020 — A team of scientists from the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University has gained insight into how electric fields affect the way energy from light drives molecular motion and transformation in a...
Portable Device Uses Photomultiplier to Detect Foodborne Illness WEST LAFAYETTE, Ind., Feb. 14, 2020 — Researchers at Purdue University have developed a bioluminescence-sensing assay coupled with a portable light detection device that works with smartphones and laptops to do on-site testing for E. coli in food samples. To facilitate the use of a...
Starlight Could Break Up Asteroids WARWICKSHIRE, England, Feb. 13, 2020 — Electromagnetic radiation emitted from stars as they collapse might provide enough power to destroy asteroids, a research team believes. A new study out of the University of Warwick’s Department of Physics, published in Monthly Notices of the...
Neural Network Improves Quantum Tomography MOSCOW, Feb. 13, 2020 — Scientists at Skolkovo Institute of Science and Technology (Skoltech) have applied machine learning to the challenges of reconstructing quantum states. Their findings show that machine learning can reconstruct quantum states from experimental data...
Tandem Solar Cell Demonstrates 29.15% Efficiency KAUNAS, Lithuania, Feb. 13, 2020 — Scientists at Kaunas University of Technology (KTU) have achieved 29.15% efficiency in a solar cell made of perovskite and silicon. This value was certified by the CalLab of the Fraunhofer Institute for Solar Energy Systems. It represents a new...
Hybrid Microscope Improves Tissue Pathology CHAMPAIGN, Ill., Feb. 13, 2020 — Researchers at the University of Illinois at Urbana-Champaign have paired infrared capabilities with high-resolution optical microscopy and machine learning to bring cancer diagnostics into the digital era. This side-by-side comparison of a breast...
Breakthrough in THz Quantum Cascade Lasers Could Lead to Much Faster Data Rates LEEDS, England, Feb. 13, 2020 — A research team from the University of Leeds and the University of Nottingham believe they have found a way of delivering ultrafast modulation, by combining the power of acoustic and lightwaves. They published their findings in Nature...
Researchers Demonstrate VCSEL Control Using Ultrathin Metalenses NICE, France, Feb. 12, 2020 — Researchers led by Patrice Genevet of the Centre de Recherche sur l’Hétéro-Epitaxie et ses Applications (CRHEA) at the University Côte d’Azur and collaborators at the Key Laboratory of Optoelectronics Technology at...
VR Classroom Immerses Students in Nanotechnology TUCSON, Ariz., Feb. 11, 2020 — In a custom-developed virtual reality (VR) classroom at the University of Arizona, students can pick up and examine scaled-up versions of nanosize objects. The classroom is part of Nano 2020, a University of Arizona-led initiative to develop...
Approach Uses Artificial Intelligence to Predict Quantum Advantage MOSCOW, Feb. 10, 2020 — Researchers from the Moscow Institute of Physics and Technology (MIPT), Valiev Institute of Physics and Technology, and ITMO University created a neural network that learned to predict the behavior of a quantum system by “looking” at its...
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...
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...
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