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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. The researchers engineered a special ink formulation to print wavelength-selective bulk heterojunction organic photodetectors onto flexible carriers. They incorporated nonfullerene acceptors in a transparent polymer donor matrix to narrow and
II-VI, Lumentum Partner with Infinera SUNNYVALE, Calif., Feb. 21, 2020 — Infinera has announced partnerships with II-VI Inc. and Lumentum Holdings Inc. to advance the development of optical transceivers based on the XR optics technology. XR optics are expected to enable more efficient and cost-effective solutions for...
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...
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...
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...
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...
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...
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...
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...
SPIE, Edmund Optics Award Top Companies in Startup Challenge SAN FRANCISCO, Feb. 10, 2020 — Six new companies were awarded funding last week during the 10th annual Photonics West Startup Challenge event. Three top companies were selected by a panel of judges in the fields of health care and deep tech, with prizes of $2500, $5000, and...
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...
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...
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...
Meta-Hologram Optical Device Operates in Forward and Backward Directions 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....
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...
ORNL Researchers Summarize Results from Quantum Experiments OAK RIDGE, Tenn., Jan. 24, 2020 — Oak Ridge National Laboratory (ORNL) researchers Joseph Lukens, Pavel Lougovski, Brian Williams, and Nicholas Peters, with collaborators from Purdue University and the Technological University of Pereira in Colombia, summarized results from several...
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