MicroelectromechanicalSystems
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IMEC working with holograms, mirrored pixels to prevent 3D movie headaches
Let's face it, 3D movies are amazing but there are times when you'll walk away with a killer headache. A group of researchers at IMEC believes that holographic video might be the best way around this problem and has been working on a means of constructing holographic displays by shining lasers on microelectromechanical systems (MEMS) platforms capable of moving up and down like small, reflective pistons. Here's the cool part: each pixel would have a spring-like mechanism attached to it that could be moved by applying voltage to it. In the first stage of the technology, a laser is bounced off a MEMS-less chip containing an image, the diffracted light interfering to create a 3D picture. From here, the team can adjust the image by replacing pixels with small, mirrored platforms that can alternate their direction to create a moving projection. It gets technical after this, but you can take a gander at the video after the break for a full demo and explanation.
World's smallest violin uses MEMS, plays only for you (video)
You might not have heard of microelectromechanical systems (MEMS), but there are likely a bunch in your new smartphone -- they make possible the tiny accelerometers and gyroscopes needed to detect motion as your device swings around. However, last week students at the University of Twente demonstrated a brand new micrometer-scale system: a tiny musical instrument that plucks strings (those "folded flexures" above) one-tenth of a human hair wide. Six microscopic resonators fit on a microchip, one resonator per musical tone, and series of the chips can be combined into a MIDI interface to play entire songs. Though the micronium needs to be amplified 10,000 times before they're audible through standard speakers, the instrument's the real deal -- watch it play a wide selection of tunes (including some Mario Bros) in a video after the break. One burning question remains, however: is this nano-violin open source?
NEMS takes step forward, MEMS looking nervously over shoulder
Just as it's starting to seem like MEMS motion sensor technology is gaining more widespread use, we're now hearing rumblings of activity from the developers of its eventual successor: NEMS (Nano-Electro-Mechanical Systems). To contextualize this discussion (and to give laypeople a shot at understanding), MEMS sensors are the magic behind the Wii MotionPlus as well as a stunning tech demo recently conducted on a Toshiba TG01. The nascent nano version promises even greater sensitivity, and now scientists from TU Delft in the Netherlands claim they have successfully measured the influence of a single electron on an 800nm-long carbon nanowire. Just detecting such an event is a feat in itself, while the ability to measure its effects can be used in a huge range of ways: from transportation and medicine to ultra-sensitive gaming controllers. While accurate comparisons between the Dutch breakthrough and current generation sensors cannot yet be drawn, we can confidently say that this marks an important step toward making our dreams of playing a nanoscale piano a gargantuan reality.
MEMS-based smart fuses could guarantee desired explosions
While we certainly hope the average (read: not GI) jane / joe isn't overly concerned about the rate at which homegrown explosions detonate as desired, we understand the Army's need to have more faith in their own munitions. Reportedly, a new "smart fuse" conjured up at Georgia Tech could soon prevent bombs from experiencing fuse failure by using "semiconductor fabrication equipment to make hundreds of ultra-high precision detonators on a wafer at the same time." In addition to cutting down on the use of toxic heavy metals and increasing the safety of weapon production, the intelligent MEMS fuse will supposedly "incorporate built-in arm and fail-safe mechanisms that virtually guarantee that munitions go off when they should, every time." Weapons that fire when needed -- now there's a concept. [Image courtesy of Rich's Incredible Pyro]
Secrets of levitation cracked by Scottish researchers?
Try not to get too frenetic here, but a couple of gurus at the University of St. Andrews in Scotland have reportedly created an "incredible levitation effect by engineering the force of nature which normally causes objects to stick together." In layman's terms, the scientists have devised a way to reverse the phenomenon known as the Casimir force so that it "repels instead of attracts." Ultimately, the discovery could lead to "frictionless micro-machines with moving parts that levitate," and in theory, devices could be created to transport humans. Do realize, however, that individuals in this team have also "showed that invisibility cloaks are feasible," so we're not counting ourselves amongst the faithful just yet.[Thanks, James][Our readers have let us know that this article's headline bore some similarities to other articles on the same topic -- though purely coincidental, in the interest of further differentiating the post we've edited it to a small degree. -Ed.]
Autonomous robotic fleas could create distributed sensor network
We've seen a fair bit of mesh networking approaches lately, and thanks to a unusual project going on at the University of California, Berkeley, the next great ad hoc network could be started by a horde of bugs. Sarah Bergbreiter has developed an "autonomous robotic flea has been developed that is capable of jumping nearly 30 times its height," thanks to what could possibly be hailed as the "world's smallest rubber band." Interestingly, the creator hopes that the minuscule bugs could eventually be used to "create networks of distributed sensors for detecting chemicals or for military-surveillance purposes." The Smart Dust initiative could eventually be expanded to grow wings, but for now the solar-powered bugger will stick to hoppin' via a "microcontroller to govern its behavior and a series of micro electromechanical systems (MEMS) motors on a silicon substrate."[Via BoingBoing]
