Electrostatic interfaces – systems that make your fingers “feel” textures on a smooth metal plate – have been around for a long time. They haven’t quite caught on because the sensation is a little creepy and it’s not quite foolproof. However, a researcher at Disney Research in Pittsburgh, Pennsylvania, Olivier Bau, has created a unique system that creates these sensations on any surface using a special wearable system that actually controls the electricity sent to nerves in your skin.
Visualization tool shows how dramatically natural gas is displacing coal in electricity generation and the dynamics of renewable energy.
Even people with a passing interest in energy know there have been major changes in the U.S. over the past few years, including the surge in domestic oil and natural gas drilling and a jump in renewable energy.
sciencehabit writes “Left to its own devices, a bubble will weaken and pop as the fluid sandwiched between two thin layers of soap succumbs to gravity and drains toward the floor. But when researchers trapped a bubble between two platinum electrodes and cranked up the voltage, the fluid reversed direction and actually flowed up, against the force of gravity. The newly strong and stable bubbles could live for hours, and even visibly change colors as their walls grew fatter. Because soap film is naturally only nanometers thick, this whimsical experiment could help scientists create more efficient labs-on-chips, the mazes of nanotunnels that can diagnose disease based on the movements of a miniscule drop of blood.”
Read more of this story at Slashdot.
cylonlover writes “Tornadoes generally evoke the destructive force of nature at its most awesome. However, what if all that power could be harnessed to produce cheaper and more efficient electricity? This is just what Canadian engineer Louis Michaud proposes to achieve, with an invention dubbed the ‘Atmospheric Vortex Engine’ (or AVE). It works by introducing warm air into a circular station, whereupon the difference in temperature between this heated air and the atmosphere above creates a vortex – or controlled tornado, which in turn drives multiple wind turbines in order to create electricity. The vortex could be shut down by simply turning off the source of warm air. Michaud’s company, AVEtec Energy Corporation, reports that the system produces no carbon emissions, nor requires energy storage to function, and that further to this, the cost of energy generated could potentially be as low as US$ 0.03 per kilowatt hour.”
Read more of this story at Slashdot.
ananyo writes “A new material has broken the record for converting heat into electricity. The material had a conversion efficiency of about 15% — double that of one of the most well-known thermoelectrics: lead telluride (abstract). For decades, physicists have toyed with ways to convert heat into electricity directly. Materials known as thermoelectrics use temperature differences to drive electrons from one end to another. The displaced electrons create a voltage that can in turn be used to power other things, much like a battery. Such materials have found niche applications: the Curiosity rover trundling about on the surface of Mars, for example, uses thermoelectrics to turn heat from its plutonium power source into electricity. That doesn’t mean that the material is ready to be used on the next Mars rover, however: NASA has been looking at similar materials for future space missions, but the agency is not yet convinced that they are ready for primetime.”
Read more of this story at Slashdot.
Recycling wastewater to generate energy has turned up noses before, but researchers at Oregon State University have developed a microbial fuel cell that can create 10 to 50, or even 100 times more electricity per volume than similar technologies. After refining the tech for several years using new materials, techniques and altered bacteria, the team can now extract two kilowatts per cubic meter of refuse. As bacteria oxidizes organic matter, electrons — rather than the hydrogen or methane that other methods rely upon — are produced and run from an anode to a cathode within the device to create an electric current. Once implementation costs are cut down, the technology could power waste treatment plants and enable them to sell excess electricity. The contraption isn’t just for processing what comes out of the porcelain throne — it can also utilize materials ranging from grass straw to beer brewing byproducts. For now, however, the cell will tackle a pilot study before it inches closer to your local brewery or water treatment facility.
Filed under: Science
Researchers create super-efficient microbial fuel cell, dream of selling excess electricity originally appeared on Engadget on Tue, 14 Aug 2012 04:14:00 EDT. Please see our terms for use of feeds.
Permalink 
PhysOrg | 
Oregon State University | Email this | Comments
Engadget
Spray-on solutions have found a place in green technology and even in transmitting radio waves, and they’re no strangers to medical research, either. Researchers at the British Heart Foundation are working on a bioelectric spray composed of heart cells to help mend that most vital of organs. Because the cells need to be extremely thin to form a sheet of heart tissue, they are passed through a conductive needle that charges them with up to 30,000 volts. Exposing the cells to an electric field turns the solution into small droplets, which in turn form the cardiac sheet. The scientists can also add other types of cells to create “three-dimensional” tissue, which can be grafted onto injured hearts or sprayed onto scar tissue to help patients’ tickers pump more strongly. As is so often the case, the next step will be testing the technology on animals, and the project’s ultimate goal is to use this spray-on solution rather than making patients wait for donor hearts.
Filed under: Science
Researchers develop cell spray to repair hearts, healthy dose of electricity included originally appeared on Engadget on Fri, 03 Aug 2012 22:53:00 EDT. Please see our terms for use of feeds.
Permalink BBC | British Heart Association | Email this | Comments
Engadget
Fire, frenemy of humanity since time immemorial. Typical extinguishing methods have involved water, chemicals and even blankets, but DARPA wanted to see if there was another, more pragmatic way. Starting with the understanding of fire actually being a cold plasma, DARPA then explored fire’s electromagnetic and acoustic qualities, and discovered two potential ways to quell the flame, one using electrons, the other, sound. The electron technique creates an oscillating field that separates the fire and fuel dubbed “ionic wind,” the other method creates an acoustic field that increases the air velocity (thinning the the flame boundary) and causes the flames to widen and drop in temperature, dispersing the fire’s energy. The concepts have been proven, but scaling these up to real world solutions is a whole different matter. Light up the videos after the break to see them in action.
Filed under: Science
DARPA fights fire with sound and electricity, hopes ‘ionic wind’ could save lives in the field originally appeared on Engadget on Mon, 16 Jul 2012 17:32:00 EDT. Please see our terms for use of feeds.
Permalink io9 | | Email this | Comments
Engadget
The decision to invest in an electric vehicle would be much easier to justify if the car in question offered unlimited range. That appears to be the concept behind a Toyohashi University research group’s wireless power prototype, which can successfully transmit electricity through a 10 centimeter-thick concrete block. During a demonstration in Yokohama, Japan, the team sent between 50 and 60 watts of power through a pair of concrete blocks to two tires, which then juiced up a light bulb (you can see the rig just above). The project is called EVER (Electric Vehicle on Electrified Roadway), and could someday be used to keep cars moving along a highway without any need to pull over for a recharge, thanks to a constant stream of electricity coming from below the road. There are some serious obstacles to overcome before EVER can get some wheels turning — namely, a need to pump nearly 100 times the current maximum load through concrete that’s twice as thick as what they’ve managed today, not to mention improving undisclosed efficiency levels — but the group reportedly said that it’s up to the task, making us fairly optimistic that such a solution could one day get us from A to B without petrol. Until then, you’ll probably want to plan out a pit stop or two before you leave the garage.
Japanese group transmits electricity through 4-inch concrete block, could power cars on roads originally appeared on Engadget on Sat, 07 Jul 2012 00:58:00 EDT. Please see our terms for use of feeds.
Permalink TechOn, The Verge | Toyohashi University of Technology | Email this | Comments
Engadget
And it wouldn’t need super-advanced technology to do it.
It won’t be cheap, or easy. But it’s technically feasible for the United States to get 80 percent of its electricity from renewable sources by 2050, according to a new report from the National Renewable Energy Laboratory. And no major breakthroughs are needed to do it—the report considered only currently commercially available technologies, says Ryan Wiser, one of the authors. (We consider how Germany might reach a similar goal in our feature, The Great German Energy Experiment.)
Zothecula writes “If you’ve ever worn a knee brace, then you may have noticed what a large change in angle your knee goes through with every step you take, and how quickly it does so. A team of scientists from the U.K.’s Cranfield University, University of Liverpool and University of Salford certainly noticed, and decided that all that movement should be put to use. The result is a wearable piezoelectric device that converts knee movement into electricity, which could in turn be used to power gadgets such as heart rate monitors, pedometers and accelerometers.”
Read more of this story at Slashdot.
First time accepted submitter toomuchtogrok writes “Imagine charging your phone as you walk, thanks to a paper-thin generator embedded in the sole of your shoe. This futuristic scenario is now a little closer to reality. Scientists from the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a way to generate power using harmless viruses that convert mechanical energy into electricity. The scientists tested their approach by creating a generator that produces enough current to operate a small liquid-crystal display. It works by tapping a finger on a postage stamp-sized electrode coated with specially engineered viruses. The viruses convert the force of the tap into an electric charge.”
Read more of this story at Slashdot.
Man-made islands; indoor ski slopes; temporary ice hotels. We thought we had seen it all in Dubai, and then the Middle Eastern city went and outdid itself with the Water Discus Hotel, a hotel that will feature a series of sci-fi styled discs, one of which will be located 21 stories underwater. For those who prefer to stay above water, Antwerp will open one of the world’s largest floating swimming pools this summer. Made from an old ferry boat, Badboot will be 120 meters long and it’ll be part of a larger facility that can host as many as 600 people. And across the point in New York, the One World Trade Center skyscraper was just crowned the tallest building in NYC.
Inhabitat’s Week in Green: the Water Discus Hotel, magnetic LED bulbs and pig poo electricity originally appeared on Engadget on Sun, 06 May 2012 20:30:00 EDT. Please see our terms for use of feeds.
Permalink | | Email this | Comments
Engadget
A Germany company borrows the materials and manufacturing process of OLED displays to make a new kind of solar panel.
A startup in Germany has developed a new kind of solar panel made of small, organic molecules deposited on polyester films. The technology is similar to what’s used for OLED displays for phones and flat-screen TVs. The panels are flexible, and far lighter than conventional solar panels, yet in some locations—particularly where it’s hot or cloudy—they can generate just as much electricity as a conventional solar panel.
To reach a goal of getting 80 percent of its power from renewable sources by 2050, Germany plows subsidies into the smart grid.
From a computer screen in an office block in Dortmund, Germany a power-plant operator for utility giant RWE AG orchestrates the output of wind turbines, rooftop solar panels, and other renewable energy devices scattered across the surrounding Rhine-Ruhr region, one of Germany’s most densely-populated. Using wireless links on the power equipment, and an energy-management system designed with German engineering giant Siemens, RWE has found a way to weave together intermittent power from dozens of small green energy generators into a steady flow of electricity and government subsidies.
An anonymous reader writes “Everyone knows that trees give us all oxygen so we can breathe, but according to an Australian scientists they also affect the concentration of positive and negative ions in the air. A team from the Queensland University of Technology’s International Laboratory for Air Quality and Health (ILAQH) ran experiments in six locations all over Brisbane and found that positive and negative ion concentrations in the air were two times higher in heavily wooded areas than in open grassy areas, such as parks.”
Read more of this story at Slashdot.
Recent Comments