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Research & Technology News

QD Solar Cells Realize 16.6% Power Conversion Efficiency
BRISBANE, Australia, Feb. 25, 2020 — Researchers at the University of Queensland (UQ) are harnessing the properties of quantum dots (QDs) to make solar cells that capture a wider range of light for energy, are more stable in their energy production, and can be applied to curved surfaces. According to the team led by professor Lianzhou Wang, UQ has achieved a new world record for QD solar cell efficiency — going from 13.5% to 16.6%, a nearly 25% gain in efficiency. The researchers developed a surface engineering
Precise Control of Photons in a Synthetic Dimension
STANFORD, Calif., Feb. 24, 2020 — To enable precise control of photons, a Stanford-led team created a pseudo-magnetic force, essentially “tricking” photons — which are intrinsically nonmagnetic — into behaving like charged electrons. The photons were sent...
Printable Photodiodes Could Be Used for Visible Light Communication
KARLSRUHE, Germany, Feb. 24, 2020 — A team at Karlsruhe Institute of Technology (KIT) has demonstrated a multichannel visible light communication system based on an organic photodetector array capable of demultiplexing optical signals without the need for additional optical filters....
Fluorescent Imaging Helps Identify Lung Cancer Lesions During Surgery
PITTSBURGH, Feb. 24, 2020 — A tumor-highlighting technology called OTL38 enhances the visualization of lung cancer tissue through near-infrared imaging, providing surgeons with a significantly better chance of finding and removing more cancer than previously possible. The...
Sensor Uses Quantum Entanglement to Detect Magnetic Excitation
TOKYO, Feb. 21, 2020 — Using the principle of quantum entanglement, scientists at the University of Tokyo’s Research Center for Advanced Science and Technology (RCAST) demonstrated the coupling of a millimeter-size magnetic sphere with a sensor and showed that the...
2D Material Structures Can Emit Customized Light in Desired Color
GENEVA, Feb. 21, 2020 — Some atomically thin 2D materials can emit customizable light in the color desired when the materials are combined together to create an “artificial semiconductor.” The discovery, made by researchers at the University of Geneva (UNIGE)...
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...
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 Efficiency of 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 Terahertz Quantum Cascade Lasers
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...

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