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Tag: laser

ICESat: Space laser to get unprecedented view of Earth's ice

ICESat: Space laser to get unprecedented view of Earth's ice

Science
The American space agency is about to put a laser in orbit to measure the condition of Earth's ice cover. The satellite mission, called ICESat-2, should provide more precise information on how these frozen surfaces are being affected by global warming. Antarctica, Greenland and the ice floating on the Arctic Ocean have all lost volume in recent decades. ICESat-2 will track ongoing change in unprecedented detail from its vantage point some 500km above the planet. A Delta II rocket is booked to take the satellite laser into space on Saturday. Lift-off from the Vandenberg Air Force Base in California is scheduled for 05:46 local time (12:46 GMT; 13:46 BST). As the name suggests, ICESat-2 is a follow-on project. The original spacecra...
Copper nanoparticles, green laser light cost beneficial in circuitry printing

Copper nanoparticles, green laser light cost beneficial in circuitry printing

Science
Sept. 13 (UPI) -- Printing electronic circuitry with copper nanoparticle ink and green laser light can be more cost beneficial and efficient, according to a study. Researchers at Soonchunhyang University in South Korea studied the thin-film printing technique instead of the conventional methods, based on laser power, scanning speed, pre-baking conditions and film thickness effects. Their findings were published this week in the journal AIP Advances. Nanoparticles in metallic inks have an advantage over bulk metals because of their lower melting points in the circuitry manufacturing. Originally the researchers, led by Kye-Si Kwon, tested silver nanoparticle ink but found it is costlier. Then, they studied studied copper, which is derived from copper oxide. Although copper's melting point ...
Rheinmetall tapped for laser light for Bundeswehr assault rifles

Rheinmetall tapped for laser light for Bundeswehr assault rifles

Business
July 6 (UPI) -- Rheinmetall has received a $ 5.9 million contract for laser light packages for the German Bundeswehr's Special Forces Assault Rifle. The order, announced this week by Rheinmetall, will provide 1,745 laser light packages to the Bundeswehr, with deliveries beginning in early 2019. The procurement falls under the Federal Office for Bundeswehr Equipment, Information Technology and In-service Support. The package features a Variable Tactical Aiming Laser which is designed for compactness and to be mounted on shorter assault rifles. The package includes two weapon lights, including a standard dual LED and a special version for hostage rescue operations. The work will be performed by Rheinmetall Soldier Electronics in Stockach, Germany. The Special Forces Assault Rifle is a modi...
New laser sensor could detect explosives, dangerous gases more quickly

New laser sensor could detect explosives, dangerous gases more quickly

Science
Sept. 29 (UPI) -- Scientists have developed a new laser-based spectroscopic method for identifying potentially dangerous gasses. The method, which relies on the combination of two spectroscopic techniques, could be used to more quickly and accurately identify explosives and other dangerous substances.The first technique, called multi-dimensional coherent spectroscopy, relies on short laser pulses. When bounced through a mixture of gases, scientists can measure which wavelengths are absorbed and use their observations to identify the gas molecules."If you have light going through the gas, and, for example, you use a prism to separate white light into colored light, in the rainbow spectrum you'd see there'd be black stripes," Steven Cundiff, a physics professor at the University of Michigan,...
XFEL: Brilliant X-ray laser comes online

XFEL: Brilliant X-ray laser comes online

Science
One of the most powerful X-ray machines ever built has officially opened in the German city of Hamburg. The facility, which has cost more than a billion euros to build, will be used to study the detailed structure of matter, atom by atom. It is called the European X-ray Free Electron Laser (XFEL). Scientists say the way it shines light on targets will permit, for example, chemical bonds to be filmed in the instant that they are made or broken. The researchers anticipate fundamental discoveries that lead to new medical treatments and novel materials, to name just two possibilities. The XFEL will begin operations with 11 nations as members of its consortium. Britain, which has supplied equipment to the facility, is expected to sign commitment papers to join the group before the end of the ye...