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Research & Technology News
Solar Sail Spacecraft Begins Test Voyage in Orbit
CAPE CANAVERAL, Fla., May 22, 2015 — A small box launched into space Wednesday will soon blossom into a 32-m2 spacecraft designed to sail on sunlight. The flight is a test of The Planetary Society’s LightSail™, which it said could change how satellites and even larger spacecraft move around the solar system. LightSail isn't high enough to escape Earth's atmospheric drag, and thus will not demonstrate controlled solar sailing. Instead, it is expected to go through a testing period of about four weeks, after
Liquid Crystal Compound Lens Eyed for 3-D Imaging
PHILADELPHIA, May 21, 2015 — Liquid crystal can be controllably formed into compound lenses similar to those found in insects, a team from the University of Pennsylvania has demonstrated. These lenses produce sets of images with different focal lengths, a property that could be...
IR Laser Propels 1-Pound Mirror in Spaceflight Simulation (with video)
TUSTIN, Calif., May 19, 2015 — A private laboratory says it has validated a design for an IR laser propulsion system that could be used to keep satellites in position in low-earth orbit. Y.K. Bae Corp. said it successfully accelerated a 1-lb mirror along a 2-m frictionless air...
Lasers Probe Causes of Volcanic Eruptions
LIVERPOOL, UK, May 18, 2015 — A better understanding of volcanoes' inner workings based on fluorescence imaging could save lives. A team from the University of Liverpool in England, Monash University in Melbourne, Australia, and the University of Newcastle in Callaghan,...
Excimer Lasers Print Silicon on Paper
DELFT, Netherlands, May 18, 2015 — For years, scientists have sought an alternative to silicon that possesses the same electrical properties while offering "superior printability." A replacement may not be necessary, though, as laser-printed silicon could be the answer. Researchers...
Pseudoparticles Find Crucial Role in Energy Conversion
KARLSRUHE, Germany, May 15, 2015 — Pseudoparticles could help make more efficient the conversion of light into storable energy, ushering in the potential for a decisive sustainable energy supply. A team from the Karlsruhe Institute of Technology (KIT), in collaboration with the Fritz...
Smartphone Microscope Counts Parasites in Blood
BERKELEY, Calif., May 7, 2015 — A research team led by engineers at the University of California, Berkeley, has developed a new mobile phone microscope capable of analyzing blood. Its ability to automatically detect and quantify bodily infection caused by parasitic worms. The next...
Laser Design Brings Attosecond Spectroscopy Closer
MUNICH, May 7, 2015 — A new laser design could enable high-energy attosecond midwave infrared and vacuum UV spectroscopy systems and faster optoelectronics. The devices is a diode-pumped Kerr-lens mode-locked Yb:YAG thin-disk laser combined with extracavity pulse...
Fiber Tests Show Rod Cells' Uneven Responses to Light
TRIESTE, Italy, May 6, 2015 — To study the response of retinal cells to light, an team of researchers has developed a new technique involving tapered optical fibers that could also have applications in optogenetics. Led by the International School for Advanced Studies (SISSA) in...
DNA, Silver Used to Create Fluorescent Arrays
SANTA BARBARA, Calif., May 5, 2015 — A research team at the University of California, Santa Barbara, has discovered how to create a programmed, tunable fluorescent array by cradling silver nanoclusters inside synthetic DNA. Led by Beth Gwinn, a professor in UCSB’s physics...
Algorithm Makes Video Panoramas from Unstructured Camera Arrays
ZURICH, May 5, 2015 — Even nonprofessionals may someday be able to create high-quality video panoramas using multiple cameras with the help of a new algorithm. The method smooths out the blurring, ghosting and other distortions that routinely occur when video feeds from...
ODT Enhances Optical Tweezer Capabilities, Holographic Bioimaging
DAEJEON, South Korea, May 4, 2015 — A new optical diffraction tomography (ODT) technique can measure the positions of optically trapped particles in three dimensions at high speed. The method provides a more streamlined and precise way to locate and move microscopic particles than...
Low-Energy Lasers Produce Microplasmas for Spectroscopy
ROCHESTER, N.Y., April 28, 2015 — Microplasma summoned out of thin air by low-energy laser pulses can be used as a source of broadband terahertz radiation for spectroscopy. Terahertz imaging needs only a narrow range of terahertz frequency to, for example, nondestructively look...
Sharper 3-D Laser Scanner Impervious to Ambient Light
EVANSTON, Ill., April 28, 2015 — Refining principles of 3-D sensing for video games, researchers at Northwestern University have developed a 3-D laser scanner that produces detailed images even in the presence of bright ambient light. The device is modeled after the human eye, and...
Raman Imager Speeds Cancer Detection
WEST LAFAYETTE, Ind., April 24, 2015 — A vibrational spectroscopic imaging technology that can take images of living cells could represent an advanced medical diagnostic tool for the early detection of cancer and other diseases. The electronic device is referred to as a 32-channel tuned...
Frequency Comb Has the ‘Teeth’ to Measure Terahertz Waves
PASADENA, Calif., April 24, 2015 — A frequency comb that generates and detects terahertz waves throughout a wide spectral range and with extreme precision could allow precise measurement of molecules in deep space. California Institute of Technology chemists combined commercially...
Fluorescent Ink Proposed as Anticounterfeiting Tool
EVANSTON, Ill., April 24, 2015 — Fluorescent inks could one day be used in multicolored barcodes to authenticate frequently counterfeited products. Developed by researchers at Northwestern University, the inks are invisible under normal light but reveal themselves under UV...
Angular Acceleration Observed in Helical Light Beams
JOHANNESBURG, April 23, 2015 — The orbital angular momentum of laser light traveling along a helical path through space can accelerate and decelerate as it spins into the distance. This is the first time that angular acceleration has been observed with light, according to...
Solar Nanowire-Bacteria Array Converts CO
2
into Useful Chemicals
BERKELEY, Calif., April 23, 2015 — A new artificial photosynthesis process could be used to capture carbon dioxide emissions and convert them into plastics, drugs and fuels with help from sunlight. Scientists with the U.S. Department of Energy’s Lawrence Berkeley National...
Camera Powered by the Light It Captures
NEW YORK, April 15, 2015 — Absorbing solar energy one moment and capturing images the next, a prototype video camera is said to be the first that is entirely self-powered. Developed by researchers at Columbia University, the camera can produce an image each second,...
Acid-Free Fabrication Creates Longer-Lasting Flexible Displays
DAEGU, South Korea, April 14, 2015 — Hybrid organic-inorganic thin films for flexible displays can be created with a new technique that does without the corrosive acids used in conventional sol-gel fabrication. Developed by researchers at Kyungpook National University, the process...
Perovskite Nanowires Yield Efficient, Tunable Lasers
MADISON, Wis., April 13, 2015 — A “freshman-chemistry-level” technique for growing nanowires produces tunable lasers that are nearly 100 percent efficient. With low lasing thresholds and Q factors around 3600, these single-crystal lead halide perovskite nanowires could...
VA Researching LED Treatments to Battle Gulf War Illness
BOSTON, April 13, 2015 — Following promising findings obtained from a pilot program, researchers at the VA Boston Healthcare System are testing the effects of light therapy on brain function in veterans suffering from Gulf War Illness, also known as Gulf War Syndrome. The...
Camera-Based Monitoring of Vital Signs Improved
HOUSTON, April 8, 2015 — Refined signal processing allows video cameras to monitor vital signs regardless of ambient lighting and the subject’s skin color. A new algorithm developed by researchers at Rice University detects subtle variations in skin tone caused by...
NIR Hyperspectral Imaging Roots out Peanut Contamination
MADRID, April 7, 2015 — Near-infrared hyperspectral imaging could eliminate uncertainty for food producers required to include the warning “May contain peanuts” on their packaging. A team of researchers from Spain and France have adapted the technique to...
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