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(17,577 articles)
MATERIALS, CHEMICALS & COATINGS NEWS
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Raman Whispering Gallery Detects Nanoparticles
ST. LOUIS, Sept. 1, 2014 — A Raman microlaser sensor can detect and count individual particles — including viruses — as small as 10 nm. Researchers led by Dr. Lan Yang of Washington University achieved Raman lasing in a silica microcavity or whispering gallery. Within the microcavity, two modes of the beam emitted by the Raman laser circulate in opposite directions. When a particle lands on the ring and scatters energy between these modes, the single Raman lasing line splits into two lasing...

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‘Butterfly Molecule’ System Could Bring New Sensors, More
TALLAHASSEE, Fla., Aug. 29, 2014 — A molecular system could convert photon energy directly to mechanical motions, emit white light and even take your temperature. The system, developed by Florida State University researchers, is based on a molecule that was previously...
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Quantum Imaging Method Doesn’t Need Light to Touch Object
TYROL, Austria, and VIENNA, Aug. 29, 2014 — A new quantum imaging technique can acquire an image of an object without ever detecting the light used to illuminate it. Typically, to obtain an image of an object it must be illuminated with a light beam and a camera used to sense the...

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Doppler OCT Measures Cocaine’s Impact on Brain
WASHINGTON, Aug. 28, 2014 — A variant of optical coherence tomography has provided the first images of blood flow disruption in the brain caused by cocaine use. In a study involving mice repeatedly injected with cocaine over a 30-day period, researchers from Stony...
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Spectroscopy Measures Nanoscale Material Strain
LAFAYETTE, Ind., Aug. 28, 2014 — A new spectroscopy technique could lead to microelectronics that perform better under stress and heat. A team from Purdue University developed the technique, called nanomechanical Raman spectroscopy. Raman spectroscopy can provide...

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Laser Pulses (Briefly) Turn Glass into Metal
WIEN, Austria, Aug. 27, 2014 — Subjected to ultrafast laser pulses, quartz glass can take on metallic properties, turning briefly from electrical insulator to conductor. A team at the Vienna University of Technology had previously demonstrated this effect, and is now...
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Microsphere Exhibits Chip-Scale Lasing
CHAMPAIGN, Ill., Aug. 27, 2014 — Combining nanoplasmonic devices and optical microresonators can produce laser-like light emission, potentially paving the way for power-on-a-chip applications. “We have made optical systems at the microscopic scale that amplify light...

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New Chief of Operations Joins Gooch & Housego
Dowlish Ford, Ilminster, England, Aug. 27, 2104 — Alex Warnock has been named chief operating officer at optical components firm Gooch & Housego plc. Warnock previously held multiple senior positions at Optos plc, DePuy iOrthopaedics, Pace Micro Technology and Motorola. He has a...
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Biomimetic Photodetector Distinguishes Color
HOUSTON, Aug. 26, 2014 — A new photodetector mimics living organisms’ ability to sense colors, enhancing color filtering and selectivity. The biomimetic color photodetector, developed at Rice University’s Laboratory for Nanophotonics (LANP), uses an...

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Forecast: Worldwide Solar Capacity to Reach 66 GW by 2019
BOSTON, Aug. 26, 2014 — The global solar power industry will grow to a capacity of 65.6 gigawatt-peak (GWp) by 2019, with China at the forefront, the market analysis firm Lux Research predicts. Worldwide solar power capacity stood at a 37.5 GWp in 2013, meaning...
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Ground-Based Optics to Track Space Debris
CANBERRA, Australia, Aug. 26, 2014 — A new facility will use electro-optics and radar to provide an enhanced view of debris orbiting the Earth. Lockheed Martin Space Systems, in collaboration with Electro Optic Systems pty Ltd., is developing the new tracking site in Western...

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Hydrogen Produced Using Photosynthetic Blueprint
CANBERRA, Australia, Aug. 26, 2014 — Researchers have artificially replicated steps of photosynthesis to produce hydrogen as a zero-carbon replacement for petroleum products. A team from Australian National University modified the naturally occurring protein ferritin to...
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Synopsys Names Optical Design Contest Winners
MOUNTAIN VIEW, Calif., Aug. 26, 2014 — Xinda Hu of the University of Arizona, and University of Rochester students Anthony Vella, Aaron Bauer and Nicolas Brown are the winners of Synopsis Inc.’s Robert S. Hilbert Memorial Optical Design Competition. Hu designed a...

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Inrad Receives Order for Tank Optics
NORTHVALE, N.J., Aug. 25, 2014 — Inrad Optics has received a $585,553 order for metal optical mirrors from the U.S. Army. Inrad will provide single-axis mirrors for electro-optic fire-control systems that give M1A1 tanks their ability to shoot on the move. The...
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Optogenetics Heightens Whisker Sensitivity in Mice
PROVIDENCE, R.I., Aug. 25, 2014 — Researchers have heightened the sensitivity of mouse whiskers by using optogenetics to create gamma waves in the brain. A team from Brown University used pulses of blue light to manipulate inhibitory interneurons in the primary sensory...

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Quantum Cascade Laser Tests Blood Sugar
PRINCETON, N.J., Aug. 25, 2014 — A new laser system could eliminate the need for conventional finger-prick tests for diabetics. A team from Princeton University has developed the new technique, which measures blood sugar by directing an IR quantum cascade laser at a...
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'Water Window' Poses Imaging Prospect
SALAMANCA, Spain, Aug. 22, 2014 — The “water window” of biological tissue can be exploited to achieve high-contrast microscope images, as well as precision spectroscopy, according to a new theoretical study. Researchers from the Center for Pulsed Lasers said...

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Fluorescence Lifetime Measurement Enhances Recycling
MUNICH, Aug. 22, 2014 — Sorting plastics using fluorescence lifetime measurement could simplify and speed up the recycling process. Developed by a team from Ludwig Maximilian University of Munich, the technique takes advantage of the intrinsic fluorescence...
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Semi-Artificial Photovoltaics Surpassing Photosynthesis
BOCHUM, Germany, Aug. 22, 2014 — Semi-artificial leaves could function as photovoltaic systems, and with unprecedented performance. In leaves, the membrane protein complex photosystem I (PS I) absorbs light, and its energy is utilized for converting carbon dioxide into...

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Inrad Optics Posts Loss After Facilities Consolidation
NORTHVALE, N.J., Aug. 21, 2014 — Inrad Optics Inc. reported a net loss of $1.0 million in the second quarter of 2014, compared to a net loss of $648,000 in the second quarter of 2013. Revenue for the second quarter was $2.2 million, down 17.3 percent from $2.7 million in...
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Raman Scattering Measures Single-Molecule Vibrations
IRVINE, Calif., Aug. 21, 2014 — Measurement of the vibrations, or “breathing,” of single molecules is now possible using Raman spectroscopy techniques. A team from the University of California, Irvine, viewed a bipyridylethylene (BPE) molecule vibrating via...

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Researchers Propose Lossless Nano-Optical Cables
EDMONTON, Alberta, Canada, Aug. 21, 2014 — New research proposes lossless nano-optical fibers small enough to replace copper wiring in computer chips. “We’re already transmitting data from continent to continent using fiber optics, but the killer application is using...
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Imaging Shows Bubbles Could Make Energy-Efficient Nanoparticles
PRINCETON, N.J., Aug. 20, 2014 — High-speed cameras and UV-sensitive materials are helping advance understanding of bubbles — which could mean big things for nanoparticles. In fact, a system in which bubbles mix liquids is an energy-efficient route toward producing...

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Laser Tweezers Used to Study Malaria
CAMBRIDGE, England, Aug. 20, 2014 — Optical tweezers are helping in the race to find new medicines or vaccines to wipe out malaria. A team from the Wellcome Trust Sanger Institute and the University of Cambridge is studying how Plasmodium falciparum malaria parasites interact...
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Kansas, Nebraska Researchers to Probe Ultrafast Laser Dynamics
MANHATTAN, Kan., Aug. 19, 2014 — A three-year, $6 million grant will support a research project on how ultrafast lasers influence matter. Funded by the National Science Foundation's Experimental Program to Stimulate Competitive Research, the project involves 30 physicists,...






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