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Light Sources News
Researchers Engineer Light-Activated Cells for Treating Diabetes
MEDFORD, Mass., Nov. 5, 2019 — Tufts University researchers have shown that glucose levels can be controlled in a mouse model of diabetes through optogenetics. When exposed to light, engineered pancreatic beta cells transplanted into diabetic mice produced more than two to three times the typical level of insulin. The light-switchable cells are designed to compensate for the lower insulin production or reduced insulin response found in diabetic individuals.
Bioinspired Sensor Uses Metalenses for Depth from Defocus
CAMBRIDGE, Mass., Nov. 4, 2019 — Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a compact sensor that can measure depth in a single shot. The sensor’s design was inspired by the specialized optics of the jumping spider,...
Structured Light Could Increase Information Capacity
JOHANNESBURG, Nov. 4, 2019 — Researchers from the University of Witswatersrand (Wits) have reported on progress made in the use of structured light in quantum protocols to create a larger encoding alphabet. The researchers said that since patterns of light can be distinguished...
Light Irradiation Increases Charging Rates of Lithium-Ion Batteries
LEMONT, Ill., Nov. 1, 2019 — Researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have discovered a new mechanism to speed up the charging of lithium-ion batteries for electric vehicles. By exposing the cathode to a beam of concentrated light...
Dynamic Speckle Patterns Detect Fires in Harsh Environments
KONGENS LYNGBY, Denmark, Nov. 1, 2019 — A multi-institutional group of researchers from Denmark and Norway has developed a laser-based system that can detect fires in challenging environments. The new system does not measure the amount of light or its wavelength, but rather how the...
A Stretchable Display Safely Lights Up Human Skin
NANJING, China, Oct. 31, 2019 — A stretchable light-emitting device that operates at low voltages and is safe for human skin, developed by researchers at Nanjing University, could one day provide runners and others with a convenient alternative to a stopwatch or cellphone,...
Polymer Lenses Could Lower IR Detection Costs for Consumer Products
TUCSON, Ariz., Oct. 30, 2019 — A team led by University of Arizona materials scientist Jeffrey Pyun is using a sulfur-based polymer made from waste generated by fossil fuels to develop consumer-grade infrared (IR) plastic lenses. The team has refined this material, which it first...
Visible Resonance Raman Spectroscopy Could Advance Tumor Identification
NEW YORK, Oct. 30, 2019 — A team of researchers from the U.S. and China, led by Robert Alfano from City University of New York, has used visible resonance Raman (VRR) spectroscopy to identify and grade gliomas, a common tumor of the central nervous system. The researchers...
Researchers Generate New Form of Light
BERLIN, Oct. 30, 2019 — A team composed of researchers from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI), the Israel Institute of Technology (Technion), and Technische Universitaet Berlin (TU Berlin) has generated and characterized a new...
Optical Quantum Processor Scales to Extreme
MELBOURNE, Australia, Oct. 29, 2019 — A prototype of a large-scale quantum processor made of laser light has been created by a team from Australia, Japan, and the U.S. The processor has built-in scalability that allows the number of quantum components to scale to extreme numbers. “Our...
Smart Light Bulbs Could Be Vulnerable to Hackers
SAN ANTONIO, Texas, Oct. 28, 2019 — A study performed at the University of Texas at San Antonio (UTSA) revealed that some smart light bulbs purchased for home use could become a target for hackers foraging for personal information. Some smart bulbs can connect to a home network...
Infrared Detector Improves Night-Vision Capabilities at Room Temperature
ORLANDO, Fla., Oct. 25, 2019 — Researchers at the University of Central Florida (UCF) have devised a strategy for uncooled, tunable, multispectral infrared (IR) detection. The team showed that room-temperature photodetection using 2D monolayer graphene is possible through the...
Compact IR Spectrometer Fits on a Chip
ZURICH, Oct. 24, 2019 — In an advance for smartphone spectroscopy, researchers at ETH Zurich have developed a chip about 2 cm2 in size that can be used with a smartphone to analyze infrared (IR) light in the same way a conventional spectrometer would. The researchers...
Researchers Determine Quantum Light Source in 2D Material
VIENNA, Oct. 23, 2019 — Scientists at the Vienna University of Technology (TU Wien) have uncovered the source of a special type of quantum light created at certain points in the 2D material tungsten diselenide (WSe2) when it is supplied with energy. They found that this...
New Molecule Marker Enables ‘Unprecedented’ Study of Mitochondria
NAGOYA, Japan, Oct. 23, 2019 — A team at Nagoya University’s Institute of Transformative Bio-Molecules has developed a marker molecule that bypasses the problem of photobleaching in STED microscopy. It’s allowing an unprecedented view of live mitochondria, which could help...
3D Printer Dissipates Heat With UV Light, Stereolithography
EVANSTON, Ill., Oct. 22, 2019 — Northwestern University researchers have developed a stereolithographic 3D printer that can print an object the size of an adult human in just a couple of hours. Called HARP for high-area rapid printing, this printer uses a patent-pending version of...
New Technique Enhances Superresolution Microscopy
BIELEFELD, Germany, Oct. 22, 2019 — Researchers at Bielefeld University have demonstrated improvements in superresolution structured illumination microscopy (SR-SIM), demonstrating that the technique is possible in real time and at a very high imaging rate, which is enhancing...
Laser Technology Cuts Critical Blood Incubation Time
MELBOURNE, Australia, Oct. 21, 2019 — A new laser technology vastly improves pretransfusion testing, cutting blood incubation time from the current standard of five minutes to just 40 seconds. Developed by researchers at the Bioresource Processing Institute of Australia (BioPRIA),...
New Light-Activated Metal Compound Kills Cancer Energy Source
COVENTRY, England, Oct. 18, 2019 — A team led by University of Warwick researchers is using light to activate a cancer-killing compound that attacks a vital energy source in cancer cells. This technique could be used not only to treat cancer, but also to help reduce side effects of...
Practice Makes Perfect: 3D Model Aids Surgical Outcomes
LOS ANGELES, Oct. 17, 2019 — Using a 3D virtual reality model to prepare for kidney tumor surgery could substantially improve the outcome of the procedure. A team led by UCLA found specifically that such preparation can result in reduced operating times, less blood loss during...
New Lens Could Provide Thermal Imaging Capabilities in More Compact Camera
SALT LAKE CITY, Oct. 15, 2019 — University of Utah researchers have developed a new kind of flat optical lens that is much thinner and lighter than conventional camera lenses. While conventional lenses for smartphone cameras are a couple of millimeters thick, the ultrathin lens is...
New BPV System Flaunts More Power, Longer Life
BEIJING, Oct. 14, 2019 — A new biophotovoltaics (BPV) system developed by researchers at the Chinese Academy of Sciences’ Institute of Microbiology has proven more powerful than any similar system. It also touts the greatest longevity. The new system is based on a...
Graphene-Based Measurement Technique Boosts Optical Resolution
GÖTTINGEN, Germany, Oct. 11, 2019 — Researchers at the University of Göttingen have developed a new technique that exploits the unusual properties of graphene to optically measure extremely small distances — to the order of one ångström — for the first...
Inverse, Mie Scattering Techniques Advance 3D Metamaterial Design
SEATTLE, Oct. 10, 2019 — Using an inverse design approach, a team led by researchers at the University of Washington designed and tested a 3D-printed metamaterial that can manipulate light with nanoscale precision. Though the researchers chose a spiral helix pattern for...
Nanolaser Proves Fully Functional Within Living Tissue
EVANSTON, Ill., Oct. 8, 2019 — Researchers at Northwestern University have created a nanolaser that can be used in living tissues without harming them. Developed in conjunction with a team from Columbia University, the nanolaser can be 50 nm to 150 nm thick, which allows it to...
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