piezoelectric
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Piezoelectric system turns your balmy breath into pungent power
Researchers at the University of Wisconsin-Madison have come up with a way to produce electricity from just about the most renewable source known to man -- his own breath. It's all thanks to a plastic microbelt developed by engineers Xudong Wang, Chengliang Sun and Jian Shi. Made of a material known as polyvinylidene fluoride (PVDF), this belt produces an electric charge whenever low-speed airflow passes over it and causes it to vibrate -- a result of that vaunted piezoelectric effect. Eventually, Wang and his team were able to tinker with their system to the point where it could produce enough current to charge small electronic devices. "The airflow of normal human respiration is typically below about two meters per second," Wang explained. "We calculated that if we could make this material thin enough, small vibrations could produce a microwatt of electrical energy that could be useful for sensors or other devices implanted in the face." The researchers say their technology could be used to power smaller biomedical devices like blood monitors and pacemaker batteries, which typically don't demand vast amounts of energy. No word yet on when this system could make its way to the mainstream, but we'll be waiting with bated breath.
Murata wants to take couch potatoes by the hand and do the remote control twist
We've seen Murata's marketing future, and it involves either Chubby Checker or that '90s Helen Hunt movie. The Japanese electronics maker's cooked up a flexible sensor device that'll let you twist and shout bend your way to remote television control. Dubbed the Leaf Grip Remote Controller, the prototype UI design makes use of a special pyroelectric effect-free piezoelectric film that translates twisting into channel changing, rapid twisting to swap video inputs, bending for volume control and rapid bending to power the set on / off. The company's also outfitted the non-clicker (which we'll henceforth refer to as "the Twister") with a photovoltaic cell, giving it the ability to charge -- from your man cave? Kinks in its planning aside, sample shipments are expected to be delivered sometime next spring. But, before they rush this product out to market, may we suggest the inclusion of a sports-induced rage-proof mode?
Electrowetted insoles charge your strut, The Police stand by for music licensing deal
Every move you make is another ten watts you waste. Which is why researchers at InStep NanoPower are working towards taking that spring in your step, and turning it into juice for your gadgets. Flipping the process of electrowetting on its head, whereby mechanical energy is converted into electricity via a microfluid transfer, the team was able to pound some pavement-generated milliwatts out of mercury and galinstan. The tech is far from a real world debut, with its practical, portable device-powering merits achievable only in theory. So, until this device manages to get off the ground, we're going to lump it in with past piezoelectric efforts, and call it like it is -- pics, or it didn't happen.
Wrist sensor turns the back of your hand into a meaty haptic interface (video)
We're all intimately familiar with the backs of our hands, so why not use them as a haptic interface to control our gadgets? That's the idea behind the device pictured above -- a nifty little wrist sensor that turns your paw into a flesh-toned trackpad. Designed by Kei Nakatsuma, a PhD student at the University of Tokyo, this contraption employs infrared sensors to track a user's finger as it moves across the back of a hand. These movements are mirrored on a wristwatch-like display, thanks to seven IR detectors and a set of piezoelectric sensors, effectively turning any digit into an organic stylus or mouse. Nakatsuma, who unveiled his work at this week's SIGGRAPH, says his creation can't handle the more complicated, pinching or rotating gestures you could manipulate on most smartphone touchscreens and acknowledges that the screen can be difficult to read in direct sunlight. But the underlying technology could pave the way for similarly handy designs, while allowing users to interact with their gadgets without having to constantly glance at their screens, or go fishing in their pockets. Feel your way past the break to see a video of the device in action.
Apple patent application takes the hard keys out of the keyboard, promises a flat surface solution
Apple's giving us a patent application peek into its post-PC future, and it looks like hard keys will be so 2008. The recently revealed filing shows off a virtual, flat keyboard concept for Cupertino's line of non-iOS products that flirts with metal, plastic and glass form factors. Using a combination of piezoelectrics, haptic feedback and acoustic pulse recognition, these prospective designs will be able to detect your finger-pounding surface input. If you're the fast-typing kind, you're probably wondering how your digits will recognize the keys sight unseen. Well, there's a few workarounds for that. In its metal and plastic iterations, Jobs and co. plan to stamp or micro-perforate the layout into place, while their glass counterpart would receive a graphical overlay. The application also promises an LED-lit display for hard to see conditions and the inclusion of capactive sensors to enable multi-touch functions, so you avoid e.e. cummings-style emails. Of course, applications aren't necessarily indicative of a surefire product, but those interested in tickling their imagination can give the source link a look.
Thin film coating makes everlasting energy a piezoelectric possibility
Let's be honest, it's no big secret that we're running out of dead dinosaurs to fuel our lives. And with recent natural catastrophes proving atomic energy isn't what you'd call 'safe,' it's a good thing the researchers down at the RMIT University in Melbourne have been hard at work figuring out how to turn you into a self-sustained energy source. Marrying piezoelectrics with a thin film microchip coating, those scientists Down Under have for the first time identified just how much energy your pressure can generate. This is certainly not the first time the tech has been put to use -- Orange UK's been doing something similar, albeit bulkier, for the Glastonbury fest each year. What are some practical uses, you ask? Imagine a gym powered by a sea of workout-hamsters, each producing significant energy from the soles of their feet. Curious for more? Try a pacemaker that runs solely on blood pressure, or a laptop charged by banging out Facebook updates. Who knows, maybe even RIM can put this to use in its next Storm. Just sayin'. [Image courtesy Alberto Villarreal]
Orange Sound Charge T-shirt will juice up your phone while you listen to the bass go boom
Orange UK has a long-running tradition of coming up with quirky ways to recharge your phone while enjoying the Glastonbury Festival every year, and 2011 is proving no different. This time around, it's a T-shirt that generates an electric charge from the sound around it -- rendering it ideal for front-row crowd-surfing types -- though the provided tech details go no further than to tell us that piezoelectrics and the absorption of vibration are involved. We find ourselves overcome by the suspicion that you'll never be able to get much meaningful utility out of this rather unstylish garment, but then it does give you a plausible excuse for pushing your way nearer to the stage, and if anyone objects, you can consider it a great conversation starter. So whatever happens, you win, fashion loses.
NASA makes longer, straighter piezoelectric nanowires in microgravity, no flat iron needed
Piezoelectric nanowires are the stuff that make power-generating pants a possibility, and that prodigious potential has drawn the attention of NASA. You see, self-powered spacesuits are awfully attractive to our nation's space agency, and a few of its finest student researchers have discovered that the current-creating strands of zinc oxide can be made longer and straighter -- and therefore more powerful -- when freed from gravity's unrelenting pull. That means nanowires grown in microgravity could lead to higher capacity batteries and the aforementioned juice-generating interstellar garb. Of course, there's no such end-products yet, but let's see if NASA can do what others have not: give pants-power to the people.
Nanogenerators produce electricity by squeezing your fingers together, while you dance
It's been a while since we last heard about nanogenerators -- you know, those insanely tiny fibers that could potentially be woven into your hoodie to juice up your smartphone. Dr. Zhong Lin Wang of the Georgia Institute of Technology has reported that he and his team of Einsteins constructed nanogenerators with enough energy to potentially power LCDs, LEDs and laser diodes by moving your various limbs. These micro-powerhouses -- strands of piezoelectric zinc oxide, 1 / 500 the width of a single hair strand -- can generate electrical charges when flexed or strained. Wang and his team of researchers shoved a collection of their nanogenerators into a chip 1 / 4 the size of a stamp, stacked five of them on top of one another and can pinch the stack between their fingers to generate the output of two standard AA batteries -- around 3 volts. Although it's not much, we're super excited at this point in development -- imagine how convenient to charge your phone in your pocket sans the bulky battery add-ons. And that's only one application of this technology. Yea, we know.
SmartQ announces Ten, an Android tablet packing IPS display with piezoelectric touchscreen
OK, before y'all haters state the obvious in the comments below, there's actually something noteworthy about this familiar-looking Chinese slate. What we have here is the SmartQ Ten (or T10, as referenced above), a forthcoming Froyo tablet that'll feature a juicy Cortex-A9 chip plus a Mali 400 GPU, as well as 512MB RAM and a 9.7-inch 1024 x 768 IPS display. This wouldn't be the first Android device to get the IPS goodness, though, as its predecessor R10 -- launched with Android 2.1 and a 720MHz processor back in December -- also has the same LCD panel within a seemingly identical form factor. In fact, we stumbled upon an R10 earlier today, and the prettiness of the screen did surprise us. But what really sells the Ten is its piezoelectric touchscreen, which supports multitouch input even with non-conductive objects like the old school styli. This means said tablet can achieve light transmittance similar to its capacitive touchscreen counterparts but using cheaper parts, as well as having point-input precision similar to those with resistive touchscreens but with better screen clarity. Alas, no date or price has been announced for the Ten just yet, nor do we know if it'll get Honeycomb in the future, but price it right and it might still get some love.
Immersion's MOTIV development platform integrates haptics into Android, we go hands-on
You may know that Immersion's haptic technology is in everything from surgical simulators to game controllers, but we're willing to bet you didn't know it's already baked into over 200 million existing devices -- including every Samsung Galaxy S smartphone and handsets by Nokia and LG. Now, using Android handsets' existing vibrator motors, a cheap software upgrade can inject force feedback into existing elements across the entire Android UI (2.2 and up), and with future devices -- built with multi-dollar piezoelectric actuators that vibrate the screen itself -- the haptic experience goes hi-fi. Now that it's revealed that little easter egg to the world, Immersion wants you to build some apps, and to that end it's releasing the MOTIV developer platform this March. Read all about it after the break. %Gallery-116198%
Feline-powered humidifier pales in comparison to Alice B. Toklas' catnip brownies
We know what you're thinking -- how can you combine the awesome power of electrical generation with the subtle charms of your housecat? The Wool Ball hybrid humidifier, designed by a certain Yuan Gu for the Chinese firm Yadu, gets its power from the playful swipes of your pet -- or from a wall socket, if your tabby is as lazy as ours. There's no telling when this one will make it to market, but sometimes gadgets are better in the abstract anyways.
UK defense firm pumps data through solid submarine walls
Wireless power may still be on the drawing board, but wireless data is here today, and a UK defense contractor has figured out a way to pipe the latter through several inches of steel. Using a pair of piezoelectric transducers on either side of a watertight submarine compartment, BAE's "Through Hull Data Link" sends and receives an acoustic wave capable of 15MHz data rates, enough to transmit video by essentially hammering ever-so-slightly on the walls. BAE impressed submarine commanders by streaming Das Boot right through their three-inch hulls, and while metadrama is obviously the killer app here, the company claims it will also save millions by replacing the worrisome wiring that's physically routed via holes in a submarine's frame. See the company's full US patent application at our more coverage link.
MIT's piezoelectric fibers can act as speaker or microphone, don't mind auto-tune
Piezoelectric materials work quite simply, in theory -- motion in, electricity out, or vice versa -- and since that's just how speakers and microphones transmit their sound, it's not much of a stretch to imagine someone would figure out audio on a micron scale. That someone is MIT's Yoel Fink, who's reportedly engineered a marvelous process for producing fibers that can detect and emit sound. Following up their famous work on flexible cameras, Fink's team discovered they could keep piezoelectric strands rigid enough to produce audible vibrations by inserting graphite, AKA pencil lead. Better yet, the lab process can apparently make the threads on a fairly large scale, "yielding tens of metres of piezoelectric fibre" at a single draw. The potential for fabric made from such fibers is fantastic, of course -- especially combined with this particular scientist's previous research into camera cloth.
Murata's paper-thin waterproof speaker perfect for phones, pool parties
Waterproof phones are few and far between stateside, but in Japan, they're pretty common -- and hey, who wouldn't like to be able to safely take that two-hour conference call from the comfort of your bubble bath? To that end, Murata is touting its new ultra-thin piezoelectric speaker that clocks in at just 0.9mm thick while maintaining IPX7 compliance for water resistance. It's said that waterproof phones are traditionally made by covering speaker holes with a film, compromising sound quality -- but with Murata's design, no film is necessary, offering you that symphony hall-style audio you so desperately need from sixteen inches under the surface of your swirling hot tub. Party on!
Sony prototypes pressure-sensitive tactile touchscreen, hopes to use it ASAP
Sony may come up with some far-out ideas, but the company insists this one's a bit closer to home: it's a LCD touchscreen with force sensing resistors and piezoelectric actuators that can detect how much pressure is applied and vibrate the panel respectively. Tech-On was rocking the scene at Open House 2010, and reports that the Cover Flow-like interface shuffled icons faster the harder a demonstrator pressed down, an interesting UI quirk in and of itself. Though the publication sadly didn't get to test out the tactile feedback for themselves, Sony said commercialization might not be too far off -- when asked about that telling Sony Ericsson logo, the company asserted that it'd like to see the tech in mobile phones "as soon as possible." We'd love to hold them to that, but unfortunately the applied pressure mechanic is just a prototype at this point.
Inhabitat's Week in Green: wind power, shoe power, and the world's largest laser
The Week in Green is a new item from our friends at Inhabitat, recapping the week's most interesting green developments and clean tech news for us. This week Inhabitat showcased several smart new technologies that harness clean green energy from unexpected (and undeniably awesome) sources. Volcanoes may be the bane of air travel as of late, but Indonesia has hatched a plan to harness their geothermal might to produce 4,000 megawatts of power. Meanwhile The Netherlands is turning the tide on hydroelectric power by upgrading their dikes with energy generating underwater turbines. In other news, harnessing energy from stars may seem like an out-of-this-world proposition, but that's precisely what scientists are attempting to achieve as they fire up the world's largest laser in an attempt to grasp the holy grail of energy: nuclear fusion. And speaking of out-of-this-world developments, this week Japan announced plans to launch its solar "Ikaros" spacecraft, which will sail through the stars using rays of light. While keeping stride with these developments we also looked at several innovative technologies that stand to shape the future of consumer tech. Looking to put some punch in your step? Then try these energy generating piezoelectric shoes on for size. We also brought an eye-opening new night vision technology to light that is so thin, lightweight, and cheap that it can integrated directly into eyeglasses, car windows, and cell phone cameras. Even our canine friends are getting high-tech upgrades -- check out this geo-tagging rescue dog jacket that can be used by people in peril to transmit emergency messages. Finally, this weekend marks the start of the 2010 Shanghai World Expo, which we're celebrating by showcasing the top six futuristic pavilions that harness high-tech green building strategies. But if you only check out one, make it the amazing interactive Dream Cube, which is made from recycled CD cases and features a stunning LED-laden facade that changes color with a wave of the hand.
Nokia wants patent on self-regenerating phone batteries, piezoelectrics and much magic involved
In Nokia's own words, what we're looking at is a "piezoelectric kinetic energy harvester." Working along the same principles as kinetic wristwatches have done for a long time already, Nokia's idea is to capture the energy generated by the phone's movements and to refashion it into beautiful, clean-as-a-whistle electric power. By allowing the heavier internal components to move on rails within the phone as part of a "force-transferring assembly," the Espoo think tank has figured out a way to capitalize on all the small forces of acceleration and rotation that we subject our phones to on a daily basis. It would seem overly ambitious to expect this to replace the trusty old charger, but we give credit to Nokia for even thinking about it. Check out some schematics of how this would work after the break. [Thanks to everyone who sent this in]
Scientists to bring piezoelectrics and rubber together to form flexible, wearable energy harvester
Piezoelectrics are nothing new -- though most applications, they've proven to be far more theoretically useful than practical. Still, the technology is starting to move in a direction that could prove more applicable to everyday situations -- and a new piezo material recently developed could really get the ball moving. Called PZT, it's made of nano-sized fibers of lead zirconate titanate, which are applied to thin (and we mean thin) ribbons of flexible silicone rubber. The material is super efficient, and has the ability to convert mechanical energy into electricity at a rate of about 80 percent, and, because it's made of flexible rubber, it would be well-suited to converting electricity from the energy of body movements, meaning all sorts of wearable fun may be imminent. There's no word on any practical application of this yet -- so we'll just have to keep our eyes peeled for you.
Cal researchers create 'energy-scavenging nanofibers,' look to energize your next A&F sweater
We've seen the magic of piezoelectrics before, but if a team of Cal Bears can really deliver, their spin on things will actually make a difference in the retail realm. Engineers at the University of California, Berkeley have concocted so-called "energy-scavenging nanofibers," which could one day be "woven into clothing and textiles" in order to convert into electricity the energy created through mechanical stress, stretches and twists. If everything works out, these movement-lovin' clothes could theoretically power your phone and / or PMP as you walk, and for those concerned with cost, we're told that the organic polyvinylidene fluoride materials use to make the nanofibers are easy and cheap to manufacture. Too bad there's no direct confirmation that PVDFs are machine washable, but hey, that's why you've got the local dry cleaners on speed dial.
