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Laser


— Medical

"Nanojuice" lets scientists see the gut in action

By - July 7, 2014 1 Picture
When someone suffers from a gastrointestinal disorder such as celiac disease, Crohn's disease or irritable bowel syndrome, it's standard practice for doctors to take a look at the state of their small intestine. This is typically done by having them drink a rather unpleasant-tasting barium solution, and then submitting to x-rays, an MRI or ultrasound. According to scientists at New York's University at Buffalo, however, all of those imaging techniques have serious shortcomings. Their proposed solution? A stiff drink of nanojuice. Read More
— Science

LLNL improving the efficiency of 3D metal printing

By - June 18, 2014 2 Pictures
To paraphrase Samuel Johnson, there was a time when 3D metal printing was like a dog walking on his hind legs – it wasn't done well; but you were surprised to find it done at all. Now that laser sintering or Selective Laser Melting (SLM) is used for everything from printing rocket engine components to semi-automatic pistols, the time for surprise may b long past, but the technology still has plenty of room for improvement. That's why researchers at the Lawrence Livermore National Laboratory (LLNL) are working on simulations to improve the speed of 3D laser printing and the quality of the final product by using higher-powered lasers. Read More
— Space

"Hello, World" – Video beamed from ISS using laser-based communications

By - June 8, 2014 12 Pictures
While the International Space Station may be mankind’s outpost for the conquest of space, it still leaves a lot to be desired when it comes to a decent YouTube connection. That’s because, for all its sophistication, the station’s communications system is still based on 1960s radio technology and has all the bandwidth of a soda straw. That changed this week as NASA took a step into the video age with the test of its Optical Payload for Lasercomm Science (OPALS) demonstrator, which saw a laser used to beam a video to Earth in seconds instead of the usual minutes. Read More
— Electronics

Raydiance's R-Cut system promises "new paradigm" in high-tech glass fabrication

By - June 4, 2014 6 Pictures
Smartphones have come a long way in a few short years, but two things have remained constant; most sport a "slab of glass" form factor, and dropping one makes you wish you’d had it insured. Designers have used new materials, such as Gorilla glass and sapphire to make phone displays lighter and more durable, but these have introduced their own problems – especially when it comes to manufacturing. Gizmag spoke with Raydiance, a company specializing in cutting-edge laser fabrication methods, about its new R-Cut femtosecond laser system that promises a “new paradigm" in high-tech glass fabrication. Read More
— Science

Lasers could be used to detect drunk drivers

By - June 3, 2014 1 Picture
It used to be that the only way you could get a speeding ticket was if a police officer personally witnessed your overly-fast driving. Then photo radar came along. Well, when it comes to drunk driving, lasers could soon be the equivalent of photo radar. Polish researchers at the Military University of Technology in Warsaw have demonstrated how the high-intensity beams of light can be used to detect the presence of alcohol – even exhaled alcohol – in passing vehicles. Read More
— Science

Laser tech allows for longer-distance sensing

By - June 3, 2014 1 Picture
The trouble with existing 3D imaging technology is that – at the consumer level, at least – it tends to struggle with distances beyond a few feet. Put even a third of the width of a basketball court between yourself and a Microsoft Kinect sensor, for instance, and it won't pick up your movements at all. Researchers at the University of California, Berkeley, claim to have developed a Lidar (light radar)-based system that can remotely sense objects across distances as long as 30 feet (10 m), which could have widespread benefits in fields as diverse as entertainment, transportation, robotics, and mobile phones. Read More
— Science

Lasers could significantly shrink size and cost of particle accelerators

By - May 29, 2014 2 Pictures
Particle accelerators like the Large Hadron Collider (LHC) are wonders of modern engineering and vending machines for Nobel prizes, but they’re also large – as indicated by the LHC's name – and costly. A new theoretical study by the Lawrence Berkeley National Laboratory's Berkeley Lab Laser Accelerator (BELLA) Center suggests how lasers could dramatically shrink the size and cost of particle accelerator. If the models hold true, it could remove a significant bottleneck from physics research and open up such machines to industrial and medical applications. Read More
— Medical

Low-power laser triggers stem cells to repair teeth

By - May 29, 2014 4 Pictures
Ranking among the X-Men probably isn't all that it's cracked up to be, but who wouldn't want their uncanny ability to regenerate lost bone or tissue? New research into tooth repair and stem cell biology, from a cross-institution team led by David Mooney of Harvard's Wyss Institute, may bring such regeneration one step closer to reality – or at the very least, give us hope that we can throw away those nasty dentures. Read More
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