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Researchers develop femtosecond laser that can diagnose, blast cancerous tumors
Researchers at the University of Tennessee's Center for Laser Applications have developed a femtosecond laser that can non-invasively diagnose, map, irradiate and burn cancerous tumors. Utilizing a beam that pulses at one-quadrillionth of a second, the technology is able to seek out growths and obliterate them with an increased burst of intensity. "Using ultra-short light pulses gives us the ability to focus in a well confined region and the ability for intense radiation," says Associate Professor of Physics Christian Parigger. "This allows us to come in and leave a specific area quickly so we can diagnose and attack tumorous cells fast." The swift, precise technique can avoiding heating up adjacent, healthy tissues and has potential for use in outpatient procedures, particularly for people afflicted with brain tumors. For now, however, the scientists are working with the non-profit University of Tennessee Research Foundation to bring their tech to market. Roll past the jump for the press release and a glimpse of the laser in action.
German scientists shoot world's fastest movie: gone in 50 femtoseconds
No, it's not another Fast & Furious sequel, it's something much quicker -- 800 billion times quicker, to be precise. Scientists at DESY (Germany's largest particle physics center) are premiering the Guinness World Record-holding fastest "movie" to a select audience at its light sources users' meeting. The film was shot using an X-ray Laser, and splitting the light in two. By firing one beam off on a minuscule detour (0.015 millimeters) and delaying its arrival by 50 femtoseconds, two separate images are captured. Okay, so two frames isn't exactly Lord of the Rings, but it's still the smallest interval ever recorded. This technique won't be popping up in Hollywood any time soon -- instead, it's actually used for snapping subatomic glimpses of ultra-fast molecular processes and chemical reactions. Despite the brevity of this record-breaking flick, the plot is apparently still more complex than Tokyo Drift.
MIT's laser camera can photograph around corners, render your camouflage useless
You know, we'd love to meet this Ramesh Raskar character. Possibly even shake his hand, or secretly become injected with a pinch of his DNA. You see, he's devoted his life to proving that the impossible is actually possible, first conjuring up a 6D "super-realistic" image system just over two years ago. Now, he's onto bigger and better things... things like cameras that can see around corners. Granted, this concept isn't exactly a new one -- LIDAR-equipped robots have been discovering hidden objects for years, but the mere thought of cramming this technology into a camera has us salivating. Auntie Beeb has a new piece up on the technology, and it actually does an exceptional job of explaining the technobabble. Put simply, the created prototype utilizes an ultra-short, highly intense burst of laser light (a femotosecond laser, if you have to know) to light up a scene; from there, it bends around corners and bounces back, using algorithms to figure out what's inside of the room based on the bounce points. We're guessing it'll still be a few decades before this gets wrapped into a mid-range DSLR, but we're cautiously hoping for a working mockup at CES 2015. Seriously, we just marked it down. Don't disappoint us, guys.
Spintronics magic appears again, aims to vastly accelerate data storage and retrieval
As the list of "awesome things that won't ever happen" grows ever longer, we've got a brilliant team of French physicists who have seemingly concocted a method for storing and retrieving data on hard discs that's around 100,000 times faster than usual. Yes, 100,000x. The trick is based around spintronics, an almost mythical procedure that involves the use of lasers, magnetic sensors and mutant abilities to shuffle data around at a dizzying rate. This particular method, however, improves upon the comparatively sluggish attempts of the past, as it uses photons that "modify the state of the electrons' magnetization on the storage surface." In layman's terms, this all means that the HDD you buy in 2098 will probably operate significantly faster than the one you picked up during Circuit City's going-out-of-business sale. Got it? Good.
Laser Hard Drive boasts 1Tbits/s access time, doesn't exist yet
Whenever we uncover promising new research into lasers, we can generally be sure that it will sound really awesome, and that it will be a long time before it trickles down to the consumer electronics scene (if ever). That said, research into light powered computing has shown considerable promise -- with some folks estimating that commercial laser-drive hybrids (with picosecond pulse lasers doing the work that magnetic read/write heads once did -- something considered impossible until very recently) will be available in five years time. Although the first drives will only achieve a humble 1 TBits/s, in the future we might see femtosecond-based laser drives reaching speeds beyond 100TBits/s. And you know what they say... that's a lot of terabits.
Femtosecond laser pulses could safely destroy viruses, bacteria
The world is already well aware of just how potent (and useful) femtosecond lasers are, and a recent study conducted by a team of Arizona State University physicists explains how pulses could be used to dismantle viruses and bacteria without harming a single innocent cell. Rather than follow in the footsteps of indiscriminate laser treatment options, the group of Sun Devils reportedly figured out a way to "produce lethal vibrations in the protein coat of microorganisms," which has the potential to at least treat "blood-borne diseases such as AIDS and Hepatitis." The technique, dubbed ISRS (Impulsive Stimulated Raman Scattering), has shown to not harm healthy human cells while fighting the good fight against viral pathogens, and while there's no easy way to surmise how quickly we'll see this in action, we're gonna wait for a bit more proof before getting our hopes up.[Via Switched]
