Researchers harness static electricity from your twitchiness to charge batteries

Researchers use friction to harness static electricity from movement, charge batteries

If you're the fidgety type, new research from Georga Tech may one day turn your nervous energy into a fully charged cellphone. The scientists, who previously borrowed piezoelectric power from walking, created static electricity generated from movement between plastic and metal, similar to the way a balloon can be electrified by rubbing it on your hair. The charging area was greatly increased by patterning the surfaces on a nanoscale level, allowing this "tribolectric effect" to be multiplied and converting up to 15 percent of the mechanical energy into electricity (so far). About 50 common materials could be paired to create the material, and a 2 x 2-inch patch could conceivably be worn as an armband and used to charge up a cellphone battery. So far the tech works fine in the lab, but it remains to be seen if real world vibrations can generate enough energy to make it practical. While you're waiting, though, feel free to stock up on coffee.

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Via: MIT Technology Review

Source: Nano Letters

Murata Walking Measurement System hands-on

Sure, Nike+ will track your gait and help you tell your friends just how that couch-to-2K training is working for ya, but wouldn't it be nice if it your shoes were smarter? That's partly what Murata is enabling with its Walking Measurement System, on display at CEATEC 2012. It's a piezoelectric sensor that sits in the sole of your shoe and detects pressure at different points. The readings from this sensor, transmitted over low-power Bluetooth 4.0, could enable a number of applications including precise shoe fitting for runners, posture detection for dancers and even golf swing analysis for duffers. Murata had this built into a lovely pink Asics sneaker that was a bit too small for us to try on, but we did try squeezing another sensor that fed its data in real-time to an app running on iPhone. Cool concept? For sure, but for now it's just that and nothing more.

Mat Smith contributed to this report.

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Murata Walking Measurement System hands-on originally appeared on Engadget on Wed, 03 Oct 2012 14:49:00 EDT. Please see our terms for use of feeds.

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Georgia Tech develops self-charging battery that marches to the owner’s beat

Georgia Tech develops selfcharging battery with laws of physics still intact

One of the last times we saw the concept of a self-recharging battery, it was part of a high-minded Nokia patent whose ideas still haven't seen the light of day. Researchers at Georgia Tech are more inclined to put theory into practice. Starting from a regular lithium-ion coin battery, the team has replaced the usual divider between electrodes with a polyvinylidene difluoride film whose piezoelectric nature produces a charging action inside that gap through just a little pressure, with no outside voltage required to make the magic happen. The developers have even thumbed their noses at skeptics by very literally walking the walk -- slipping the test battery under a shoe sole gives it a proper dose of energy with every footstep. At this stage, the challenge mostly involves ramping up the maximum power through upgrades such as more squeezable piezoelectrics. Georgia Tech hasn't progressed so far as to have production plans in mind; it's nonetheless close enough that we could see future forms of wearable computing that rarely need an electrical pick-me-up.

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Georgia Tech develops self-charging battery that marches to the owner's beat originally appeared on Engadget on Sun, 19 Aug 2012 04:28:00 EDT. Please see our terms for use of feeds.

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Robotic Camera Mimics Eye Movement

For all of our advances in robotics, robots still have trouble reproducing the complicated movements of the human eye. We have not had the ability to effectively mimic the movement of our eyes, so researchers have been creating robots with unnatural eyes. However, now their eyes will be crafted more like ours. Researchers at Georgia Tech have finally created robotic cameras with a more natural eye movement thanks to piezoelectric cellular actuators.

robot eye
A piezoelectric cellular actuator is able to expand or contract when current is applied, which turns signals into motion in the actuator. The research is being conducted by Joshua Schultz and assistant professor Jun Ueda.

This research can lead to not only more lifelike robots, but better surgical robots and a host nof other applications as well. It’s a big step for robotics.

[via The Verge via Geekosystem]


Georgia Tech scientists developing biology-inspired system to give robot eyes more human-like motion

Georgia Tech scientists develop biologyinspired system to give robot eyes more humanlike motion

Having difficulty getting your robot parts to work as planned? Turn to nature -- or better yet, look inside yourself. After all, where better to find inspiration than the humans that the machines will one day enslave, right? Researchers at Georgia Tech have been working to develop a system to control cameras in robots that utilizes similar functionality as human muscle. Says Ph.D. candidate Joshua Schultz,

The actuators developed in our lab embody many properties in common with biological muscle, especially a cellular structure. Essentially, in the human eye muscles are controlled by neural impulses. Eventually, the actuators we are developing will be used to capture the kinematics and performance of the human eye.

The team recently showed off their work at the EEE International Conference on Biomedical Robotics and Biomechatronics in Rome. When fully developed, they anticipate that the piezoelectric system could be used for MRI-based surgery, rehabilitation and research of the human eye.

Georgia Tech scientists developing biology-inspired system to give robot eyes more human-like motion originally appeared on Engadget on Sat, 07 Jul 2012 04:12:00 EDT. Please see our terms for use of feeds.

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Virus Used to Generate Electricity

The gadgets of the future may come with viruses, but not the ones that Norton should be worried about. First of all, they’re actual viruses, not the software kind. Second, they’re good viruses, helping to convert mechanical energy to electricity via piezoelectricity.

m13 bacteriophage berkeley labs
The brown patches in the image above are electrodes coated with genetically modified M13 bacteriophage, a virus that only attacks bacteria and is harmless to humans. When the electrodes are pressed, the viruses convert the force into electricity, as evidenced by the LCD display on top. The setup produces 6 nanoamperes of current and about 400 millivolts, about a quarter of the voltage of a triple-A battery. While there are already numerous piezoelectric technologies available, but Berkeley Labs states that those involve toxic materials and are “difficult to work with.” The modified M13 on the other hand is harmless, self-replicating and arrange themselves into organized films, making them quite promising.

I guess the video doesn’t really explain what’s going on in layman’s terms, but the full article at the Berkeley Lab News Center does have a more understandable breakdown of the research. The takeaway here is that if this virus-powered generators become fully developed, we’ll see more devices such as these that convert what would be otherwise wasted mechanical energy into electricity. Now where are the friendly worms and trojans?

[via Engadget]


Researchers use virus’s rogue traits to create electricity from motion

berkeley-labs-piezoelectrics-from-virus

Viruses are the swarming bullies of biology, but it turns out their alarming self-replication could one day power your iPod. We've seen them in batteries before, but researchers at Berkeley Labs have now coated electrodes with modified M13 bacteriophage, a harmless bacteria-eating virus, to create the first ever organic piezoelectric material -- which can convert force to electricity. The team explained that such a substance would be non-toxic, organize naturally into thin layers and self-regenerate, giving it a possible advantage over chemical options. In theory, by attaching a thin film of it to your shoes, power could be generated when walking, lending volts to the myriad electronics we pack around nowadays. To see a finger-powered video demo of our frequent-enemies making themselves useful for a change, stroll on past the break.

Continue reading Researchers use virus's rogue traits to create electricity from motion

Researchers use virus's rogue traits to create electricity from motion originally appeared on Engadget on Tue, 15 May 2012 17:41:00 EDT. Please see our terms for use of feeds.

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