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Light Sources News
ETH Researchers Demonstrate 5-Meter-Long Microwave Quantum Link
ZURICH, March 12, 2020 — In the future, quantum links will connect clusters of quantum computers to form a local network. These links will need to support quantum mechanical superposition states (states that contain the logical values 0 and 1 at the same time). The longest such link to date, based on microwaves, has been built at ETH Zurich, in the laboratory of professor Andreas Wallraff. The microwave quantum link is 5 meters long. “The challenge was to connect two of those superconducting quantum chips
COVID-19 Increases Demand for UV LEDs that Disinfect Spaces
ANSAN, South Korea, March 12, 2020 — Seoul Viosys, a developer of UV LED technology and a subsidiary of Seoul Semiconductor, announced this week that customer inquiries for its violeds UV LED products, which can be used for sterilizing bacteria, increased more than five times over the...
Lasers Could Lead Search for Water on Earth’s Moon
TUCSON, Ariz., March 11, 2020 — There are craters in the moon’s south pole that have remained dark for billions of years, but scientists have found evidence that the region may contain water. NASA has awarded nearly $1 million to eight university teams to develop methods to...
Smart Vision Lights’ Kinney Elected to AIA’s Board of Directors
NORTON SHORES, Mich., March 11, 2020 — Steve Kinney, Smart Vision Lights’ director of engineering, has been elected to serve a two-year term on the board of directors of AIA, the machine vision industry’s trade group and part of the Association for Advancing Automation (A3)....
Spectroscopic Toolkit for Structural Biology Could Aid in Drug Design
CLEMSON, S.C., March 10, 2020 — A fluorescence-based imaging technique for monitoring single molecules could lead to a better understanding of how molecules are assembled, function, and interact, aiding in structure-guided drug design. Clemson University researchers led by...
III-V Lasers Grown on Silicon Wafers Could Advance Silicon Photonics
HONG KONG, March 9, 2020 — Researchers from the Hong Kong University of Science and Technology (HKUST) have directly grown 1.5-μm III-V lasers on industry-standard 220-nm silicon-on-insulators (SOI) wafers without buffer. This work could advance the use of III-V light...
Optical Defects as Sources of Quantum Light
STANFORD, Calif., March 6, 2020 — Researchers at Stanford University are investigating light-emitting defects in materials that could someday enable quantum-based technologies. Once understood, these defects could be controlled and potentially provide bright, on-demand, predictable...
In FET Open Project, Researchers Chart Course for Bio-LEDs
GRAZ, Austria, March 5, 2020 — Scientists at Graz University of Technology (TU Graz) are working with research teams from Spain and Italy on environmentally friendly, inexpensive LEDs. The Graz team, led by Gustav Oberdorfer, is designing proteins with the help of simulation...
World Faces Air Pollution Threat, and Light Technology Could Help
MAINZ, Germany, March 5, 2020 — Air pollution is responsible for shortening people's lives worldwide on a scale far greater than wars and other forms of violence and than parasitic and vector-borne diseases such as malaria, HIV/AIDS, and smoking, according to a study published...
Terahertz Field Stabilizes Surface State of Topological Materials
AMES, Iowa, March 4, 2020 — Some topological materials are insulators in their bulk form but possess electron-conducting behavior on their surfaces. The contrast in the behavior of these surface electrons is promising for future applications but challenging to control....
Optogenetic Control of Protein Speeds ALS Symptoms in Zebrafish
MISHIMA, Japan, March 3, 2020 — A joint research group in Japan reproduced amyotrophic lateral sclerosis (ALS) symptoms in zebrafish by remotely controlling a disease-associated protein molecule with light. In ALS, motor neurons progressively degenerate and accumulate inclusions...
2D Material Takes on Chirality of Circularly Polarized Light
CAMBRIDGE, Mass., March 2, 2020 — Physicists at MIT have uncovered a new way to test whether or not a material is chiral, and have also found a way to enhance the overall chirality in a large piece of material. The material they used, titanium diselenide (TiSe2), is a...
Materials Integrated with Silicon Photonics Manipulate Light Phase at Low Loss
NEW YORK, March 2, 2020 — A Columbia University team used a 2D material from the transition metal dichalcogenide (TMD) class to control the phase of light without changing its amplitude or depleting its power. By placing the atomically thin material on top of passive silicon...
Technique Interprets Hyperspectral Images Using Phasor Approach
LOS ANGELES, Feb. 28, 2020 — An imaging technique called spectrally encoded enhanced representations (SEER) provides greater clarity and works up to 67 times faster and at 2.7 times greater definition than existing spectral imaging techniques, according to its developers at the...
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...
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...
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...
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...
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...
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...
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...
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August 2024
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