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(9,094 items)
Research & Technology News
New 'Smart Window' Materials Allow Faster Switching
AUSTIN, Texas, July 28, 2015 — Nanocrystal-based windows that selectively block different wavelengths of sunlight could help keep homes cool but still well lit — or warm but dark. The technology has taken a major step toward commercialization because it blocks up to 90 percent of near-infrared and 80 percent of visible light, according to researchers at the University of Texas at Austin. Controlled by voltage, the material takes minutes to switch between modes, an improvement over previous versions that took
Lasers Transform Drug into More Useful Form
SUITA, Japan, July 28, 2015 — Exposure to laser light may make one type of anti-inflammatory drug more effective. Researchers at Osaka University used lasers to induce selective crystallization of the metastable form of indomethacin. The exposed drug remains in that form for up...
Plasmonic Device Achieves 90-GHz Switching
DURHAM, N.C., July 27, 2015 — Able to flip on and off 90 billion times a second, a new plasmonic light emitter could form the basis of optical computing. "This is something that the scientific community has wanted to do for a long time," said Duke University professor Maiken...
Microlasers Track Cells from the Inside
ST. ANDREWS, Scotland, July 24, 2015 — Embedded microlasers could allow scientists to track and distinguish between several hundred thousand cells simultaneously. The approach could enable new forms of cell tracking, intracellular sensing and adaptive imaging, according to researchers at...
Fluorescent Mesh Aids Tissue Regrowth
LINKÖPING, Sweden, July 22, 2015 — Polymer fibers provide a mesh for tissue growth that can be monitored through near-infrared fluorescence imaging. Originally developed for solar cells, the material, called TQ1, exhibits fluorescent lifetimes in the subnanosecond range, which is...
Selective Laser Micromelting Creates Medical Implants
HANNOVER, Germany, July 22, 2015 — Selective laser micromelting allows processing of new materials that could be useful in medical implants. Researchers at Laser Zentrum Hannover EV and the University of Rostock used the additive process to coat electrodes for pacemakers with a...
Microlens Array Spawns Massive Microscope Image
CAMBRIDGE, Mass., July 21, 2015 — A new multispectral device is said to have produced the largest microscope image ever, combining 13 color channels gathered by thousands of microlenses into a nearly 17-gigapixel picture. Able to rapidly process very large amounts of biomedical...
Optical Glucose Sensor on Commercial Path
LEEDS, England, July 17, 2015 — A University of Leeds spin-out company is seeking to commercialize an optical glucose sensor that could make finger-prick blood tests unnecessary for people with diabetes. Glucosense Diagnostics Ltd. intends to make tabletop and wearable versions of...
QDs, Perovskites Team Up in Superefficient IR LEDs
TORONTO, July 16, 2015 — Getting the crystalline structures of quantum dots and perovskites to align could yield high-efficiency LEDs. Emitting in the IR region, these hybrid materials could have applications in night-vision and gesture-recognition technology, biomedical...
Blue LEDs Could Help Preserve Certain Refrigerated Foods
SINGAPORE, July 15, 2015 — Blue light may be the key to keeping chemical preservatives out of certain food products. A team of scientists from the National University of Singapore has found that blue LEDs have strong antibacterial effect on major foodborne pathogens, and are...
Optogenetics Protein Mechanics Characterized
SANTA CRUZ, Calif., July 15, 2015 — Researchers at the University of California, Santa Cruz, have identified the molecular mechanism involved in the light-induced activation of Channelrhodopsins — a discovery that could help scientists create proteins optimized for optogenetics....
Laser-Writing of DVDs May Have a Speed Limit
PASADENA, Calif., July 14, 2015 — Phase-change materials used in DVDs and other digital storage media pass through a previously unknown intermediate atomic state under laser pulses. The discovery could lead to faster computer memory systems with larger storage capacity, but may also...
Boron Turns Graphene into Blue Light Emitter
FRANKFURT, Germany, July 14, 2015 — Chemists at Goethe University Frankfurt have developed a new class of organic luminescent materials through the targeted introduction of boron atoms into graphene. The compounds exhibit an intense blue fluorescence and, consequently, are of interest...
MoS
2
Films Made at Room Temperature in New Process
SOUTHAMPTON, England, July 13, 2015 — A new chemical vapor deposition process allows fabrication of wafer-scale films of molybdenum disulfide (MoS2), which until now has been commercially available only in microscale flakes. The advance could pave the way for the large-scale manufacture...
Graphene Confines Light for Nanomolecular Sensing
LAUSANNE, Switzerland, July 10, 2015 — A plasmonic sensor made of graphene can conduct complex analyses of the smallest molecules without altering them. The device overcomes a limitation of traditional IR absorption spectroscopy, according to researchers at the Swiss Federal Institute of...
Light-Activated Drugs Help Target Tumors, Cut Side Effects
MUNICH, July 9, 2015 — A new technique that uses light to activate chemotherapy drugs in specific cells shows promise as a way to improve the effectiveness of cancer therapies while preventing severe side effects. By making existing cancer drugs sensitive to light, this...
Spectrometer Aims at Disease Detection in Breath
ADELAIDE, Australia, July 9, 2015 — An IR frequency comb spectrometer could help clinicians detect diabetes, infections and cancers by analyzing the air patients exhale. The system uses a commercial frequency comb, variable-length Fabry Perot filter cavity, virtually imaged phased...
Spectrometers Delivered for Mission to Asteroid
LITTLETON, Colo., July 9, 2015 — The Lockheed Martin Space Systems facility has received the first of five optical instruments to be installed in NASA's Origin Spectral Interpretation Resource Identification Security-Regolith Explorer (OSIRIS-REx) spacecraft. Led by the University...
Plasmon Wakes Created, Controlled in Metamaterial
CAMBRIDGE, Mass., July 7, 2015 — Surface plasmons can exhibit wakes likes any other wave, and those wakes can be controlled through nanoscale features on a metallic surface and properties of the light shining on it. The creation and control of surface plasmon wakes could lead to...
Microscopy Platform Enables Ultrastable Measurements
BOULDER, Colo., July 2, 2015 — Stable enough to track the movements of individual molecules over many hours, a new measurement platform for microscopes could enable a deeper understanding of subcellular processes. The technology was designed to track single base pairs in human...
Strain Measurement Optimizes Nanowire LEDs
COPENHAGEN, Denmark, June 30, 2015 — Tiny defects can affect the performance of nanowire LEDs. Now researchers have a way to detect these defects and potentially correct them. A team from the Niels Bohr Institute at the University of Copenhagen used x-ray microscopy to pinpoint exactly...
Lasers Improve Blade Maintenance for Stone Cutting
HANNOVER, Germany, June 30, 2015 — Lasers and glue could replace the solder used today to attach diamond cutting segments to rotary blades used in stone cutting. Laser Zentrum Hannover EV (LZH) and the Institute for Tool Research and Materials (IFW) in Remscheid have developed a...
€6.2M Project Aims for 25% Efficiency from Thin-Film Solar Cells
STUTTGART, Germany, June 29, 2015 — A consortium of 11 European universities, research facilities and businesses has set out to create thin-film solar cells to rival the efficiency and cost of multicrystalline technology. The three-and-a-half-year project is supported by €4.6...
Flexible Film Creates Colors from Reflected Light
ORLANDO, Fla., June 26, 2015 — From couture to camouflage, a new ultrathin color-changing film could one day change what we wear. Unlike other flexible display technology, the film, which was developed at the University of Central Florida, reflects rather than emits light. It was...
Optical Cavity Allows for Measurement of Nanosystems
MUNICH, June 26, 2015 — A new type of microscope uses an optical cavity to dramatically enhance image signals and enable detailed measurements of the structure and movements of individual nanoparticles The technique has potential applications in biology, chemistry, and...
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