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ultraviolet light News
Tabletop device generates all wavelengths in single beam
ARLINGTON, Va. – For the first time, a device small enough to fit on a single laboratory table has converted a coherent, directed light beam generated from more than 5000 low-energy photons into one high-energy x-ray photon. “This device can be a valuable tool for nanoscience and nanotechnology, with the capability to image materials in 3-D and capture the fastest process relevant to function with very high space and time resolution,” JILA professor Margaret Murnane told Photonics Spectra. She led...
Tabletop Device Creates All Wavelengths in 1 Beam
ARLINGTON, Va., June 7, 2012 — More than 5000 low-energy photons have been converted into one high-energy x-ray photon. The coherent, directed light beam was generated for the first time using a device small enough to fit on a single laboratory table.
Nanophotonic Endoscope Gently Probes Single Cells
BERKELEY, Calif., Dec. 21, 2011 — A newly developed nanophotonic endoscope can take high-resolution images of the inside of a single living cell and deliver therapeutic drugs and other cargo without injuring or damaging the cell. Fluorescence confocal image of a single living...
Zinc Oxide Microwires Boost LED Performance
ATLANTA, Nov. 2, 2011 — Through the use of zinc oxide microwires, the efficiency at which gallium nitride LEDs convert electricity to ultraviolet light has improved significantly. The LEDs are believed to be the first whose performance has been enhanced by the creation of...
UV Ink Tells the Real Story
Sep 1, 2011 — Comic book readers have come to expect twists and turns in story lines, but one new comic has a special twist of its own: Part of it is written in invisible ink. SVK, by Warren Ellis and artist Matt “D’Israeli” Brooker, is...
Reindeer See Wonderful World of UV Light
WILTSHIRE, England, May 27, 2011 — The same ultraviolet light that can cause temporary snow blindness in humans is the very same light that is life-saving for reindeer in the arctic. Humans are able to see light with wavelengths ranging from around 700nm, which corresponds to the...
Light Triggers Coating to Heal Itself
CLEVELAND, April 20, 2011 — A new polymer-based material that can heal itself when exposed to ultraviolet light for less than a minute has been developed by an international team of researchers. They envision that the rehealable material could be used in automotive paints,...
Organic phosphors glow in jewel tones
ANN ARBOR, Mich. – A new class of pure organic compounds that glow in jewel tones could lead to cheaper, more efficient and more flexible display screens, among other applications. Researchers at the University of Michigan developed a class of material that shines...
Light Used to Move Molecules
BALTIMORE, March 23, 2011 — Light-triggered chemistry can help move individual molecules around inside living cells, sending them to exact locations at precise times. This new tool, according to its developers at Johns Hopkins University, will allow visualization of how...
Jewel-toned Organic Phosphorescent Crystals
ANN ARBOR, Mich., Feb. 15, 2011 — A new class of pure organic compounds that glow in jewel tones could potentially lead to cheaper, more efficient and flexible display screens, among other applications. University of Michigan researcher Jinsang Kim and his colleagues have developed...
Platinum, Blue Light Combine to Combat Cancer
COVENTRY, England, Dec. 14, 2010 — Research led by the University of Warwick has found a way to use blue light to activate what could be a highly potent platinum-based cancer treatment. The team, also consisting of researchers from Ninewells Hospital Dundee and the University...
Light-Controlled Membrane Stops, Starts Gas Flow
ROCHESTER, N.Y., Aug. 5, 2010 — A newly invented membrane can stop and start gas flow simply by changing the color of the light shining on its surface. According to researchers at the University of Rochester’s Laboratory for Laser Energetics, the new membrane can block...
Water purification – ultraviolet style
May 10, 2010 — Created by industrial designer Olivia Blechschmidt, the STER UV portable water sterilization device is tailored to the home kitchen environment. The tool aims to provide an effective alternative to boiling water in the home for those affected by...
Nanogenerators Power New Sensors
ATLANTA, Ga., March 29, 2010 — By combining a new generation of piezoelectric nanogenerators with two types of nanowire sensors, researchers have created what are believed to be the first self-powered nanometer-scale sensing devices that draw power from the conversion of...
Light Trumps Radio Waves in Security
STATE COLLEGE, Pa., Feb. 3, 2010 – Sending information through light waves is nothing new, but there are limitations. Existing wireless systems either require direct line of sight or are diffused and have low signal strength. Engineers at Penn State have taken a different approach...
Light Kills Germs
Urbana-Champaign, Ill. Jan. 21, 2010 - In the battle against bacteria, researchers at the University of Illinois are using visible light to destroy harmful bacteria and viruses, even in the dark. Based upon a new ca...
Complex Solar Surface Imaged
KATLENBURG-LINDAU, Germany, Nov. 17, 2009 – The most detailed images to date of the sun's grainy-looking surface were produced by the Sunrise balloon-borne telescope, a collaboration between the Max Planck Institute for Solar System Research (MPS) in Katlenburg-Lindau, Germany, and partners...
Laser Charts Green Protein
BERKELEY, Calif., Nov. 12, 2009 – Chemists at the University of California, Berkeley, discovered the secret to the structural changes that green fluorescent proteins (GFPs), used in biological studies, undergoe when they fluoresce.
Nanopillars Demystified
PASADENA, Calif., Oct. 27, 2009 – The physical mechanism by which arrays of nanoscale pillars can be grown on polymer films with very high precision and in potentially limitless patterns, was realized by scientists at the California Institute of Technology.
Baking powder or anthrax? Ask the Ceeker
CHRISTCHURCH, New Zealand – These days, anyone who comes across a strange white powder might like to know – as quickly and as accurately as possible – whether it is benign baking powder or deadly anthrax. The Ceeker can help. Pronounced “seeker,” the handheld gadget was...
Brushstrokes across the sky
Aug 1, 2009 — In 1745, Swiss astronomer Jean-Philippe Loys de Chéseaux discovered a new object in the sky that somewhat resembled the Greek letter “omega.” Or maybe it looked like a swan of sorts. In actuality, it’s a nursery for a multitude of newly born...
Making Laser Safety a Priority
May 1, 2009 — Writing in an online forum, “Franz” confides that he injured his eye when installing an infrared laser for a customer. It was only a Class 1M, 16-mW laser, but he looked at it through a telescope that amplified the signal. “Fortunately, my eye...
Safe Luminescent Nanoflakes
SAN DIEGO, Feb. 23, 2009 – Nanoscale materials are the topic of much debate because they often are considered too poisonous for use in humans. Now a team of scientists has created minuscule flakes of silicon that glow brightly, last long enough to slowly release cancer...
UV Light Detects Salmonella
AMES, Iowa, Feb. 3, 2009 – After the recent outbreak of Salmonella in the US, which has sickened more than 500 people and killed eight, the federal government has launched a criminal investigation that will be carried out by the FDA’s criminal division and the Department of...
Light-sensitive DNA
KIEL, Germany, Oct. 10, 2008 – Researchers at Kiel University have succeeded in showing that DNA strands differ in their light sensitivity depending on their base sequences. DNA, the molecule that acts as the carrier of genetic information in all forms of life, is highly...
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