Dec 12

Researchers build world’s smallest steam engine that could

Posted in: concept, germany, laser, research, Today's Chili
Wanna create your very own microscopic steam engine? Just take a colloid particle, put it in water, and add a laser. That’s a CliffsNotes version of what a group of German researchers recently did to create the world’s smallest steam engine. To pull it off, engineers from the University of Stuttgart and Max Planck Institute for Intelligent Systems tweaked the traditional approach introduced by Robert Stirling nearly 200 years ago. In Stirling’s model, gas within a cylindrical tube is alternately heated and cooled, allowing it to expand and push an attached piston. Professor Clemens Bechinger and his team, however, decided to downsize this system by replacing the piston with a laser beam, and the cylinder’s working gas with a single colloid bead that floats in water and measures just three thousandths of a millimeter in size. The laser’s optical field limits the bead’s range of motion, which can be easily observed with a microscope, since the plastic particle is about 10,000 times larger than an atom. Because the beam varies in intensity, it effectively acts upon the particle in the same way that heat compresses and expands gas molecules in Stirling’s model. The bead, in turn, does work on the optical field, with its effects balanced by an outside heat source. The system’s architects admit that their engine tends to “sputter” at times, but insist that its mere development shows that “there are no thermodynamic obstacles” to production. Read more about the invention and its potential implications in the full press release, after the break.

Continue reading Researchers build world’s smallest steam engine that could

Researchers build world’s smallest steam engine that could originally appeared on Engadget on Mon, 12 Dec 2011 13:29:00 EDT. Please see our terms for use of feeds.

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Oct 23

Inhabitat’s Week in Green: quantum levitation, Zombie-Powered Vertical Farm and Macquariums

Posted in: car, eco, ev, green, solar, solar power, SolarPower, space, Today's Chili

Alternative transportation blasted off into the future this week as DeLorean revealed plans to launch an all-electric vehicle in 2013 and Richard Branson announced the official opening of the Virgin Galactic Gateway spaceport. Researchers also developed a next-gen quantum levitation technology that could lead to floating vehicles, and we spotted a cloud concept blimp that soars through the skies. We also brought you an exclusive interview with Revenge of the Electric Car director Chris Paine, and we shared a leaked brochure with specs on Toyota’s new Prius C.

Renewable energy also rocketed towards a more sustainable tomorrow as Japan’s team Tokai took first place in the World Solar Challenge and Apple filed a set of patents for next-generation solar technology. Meanwhile Facebook announced plans to launch a new energy efficiency app in 2012 and we launched a contest where you can win one of 25 $600 home energy audits. We also showcased a stunning set of satellite photos of the world’s power lines, and since Halloween is on its way, we brought you a Zombie-Powered Vertical Farm designed to keep its inhabitants safe from the Living Dead.

Speaking of Halloween, this week we shared instructions for making a DIY cardboard box robot costume, and we launched our 2011 Green Halloween Costume Contest for kids. We also brought you several developments from the realm of eco textiles — a material that repairs its own rips and tears and a Japanese company that recycles old bras into power-generating fuel. Finally, we showcased several slick developments in aqueous technology: an oil skimmer that cleans up spills four times faster, an artificial muscle that could one day propel nanobots through the body, and a quirky set of ‘Macquariums‘ made from Apple iMacs.

Inhabitat’s Week in Green: quantum levitation, Zombie-Powered Vertical Farm and Macquariums originally appeared on Engadget on Sun, 23 Oct 2011 20:01:00 EDT. Please see our terms for use of feeds.

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Oct 17

GE’s new factory will push out one solar panel every ten seconds

Posted in: eco, Environment, green, new-york, power, solar power, SolarPower, Today's Chili, video
General Electric is sending its troops to Colorado to conquer the thin film solar panel business. The 38th state will play home to a new facility that leverages the supermodel-thin panel know-how of PrimeStar Solar, which GE scooped up back in 2008. In traditional solar panels, sand is refined into silicon ingots, sliced wafers of which are then placed in a frame. The thin film process eliminates this, sandwiching layers of semiconductors between panes of glass — saving time, money and, most importantly, energy. The factory will open ahead of schedule in 2012 and is reportedly capable of producing a new panel every ten seconds. You can learn all of that and more in the press release we’ve got for you after the break.

Continue reading GE’s new factory will push out one solar panel every ten seconds

GE’s new factory will push out one solar panel every ten seconds originally appeared on Engadget on Mon, 17 Oct 2011 15:55:00 EDT. Please see our terms for use of feeds.

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Oct 13

Panasonic, Tesla rekindle romance, strike supply agreement for Model S batteries

Posted in: car, deal, electric car, electric vehicle, ElectricCar, ElectricVehicle, ev, money, Panasonic, tesla, Today's Chili
Panasonic and Tesla renewed their corporate wedding vows yesterday, with a new supply agreement on lithium-ion batteries. Under the accord, Panasonic will provide Tesla with cells for some 80,000 cars over the next four years, effectively ensuring that the manufacturer will meet its ramped-up production targets for 2012 — including more than 6,000 orders for its Model S EV. As for the batteries themselves, they’ll be made using Panasonic’s nickel-type cathode technology, which, according to the company, will offer the highest energy density known. Of course, we’re still awaiting for the Model S to actually enter full production, but you can whet your electric appetite with Panasonic’s full press release, available after the break.

Continue reading Panasonic, Tesla rekindle romance, strike supply agreement for Model S batteries

Panasonic, Tesla rekindle romance, strike supply agreement for Model S batteries originally appeared on Engadget on Thu, 13 Oct 2011 07:02:00 EDT. Please see our terms for use of feeds.

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Oct 10

LG panel puts LEDs along a single edge, achieves more nits with fewer watts

Posted in: green, hdpostcross, LCD, LED, LG, Today's Chili

Confining LEDs to the edges of an LCD TV cuts its energy consumption, particularly if you can get away with just lighting up one or two edges instead of all four. LG claims its latest Full HD 47-inch panel is the “world’s most energy efficient,” using a single vertical edge backlight to achieve 400 nits of brightness with just 28W of power — less than any other HDTV bigger than 40-inches and even less than many 20-inch PC monitors. That’s all good so long as there’s no head-lighting or other tell-tale signs when the panel built into a final product. We hope for LG’s sake that the washed out right side on the picture above is due to burning rubber. Full PR after the break.

Continue reading LG panel puts LEDs along a single edge, achieves more nits with fewer watts

LG panel puts LEDs along a single edge, achieves more nits with fewer watts originally appeared on Engadget on Mon, 10 Oct 2011 19:32:00 EDT. Please see our terms for use of feeds.

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Oct 05

Piezoelectric system turns your balmy breath into pungent power

Posted in: power, research, Today's Chili

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.

Piezoelectric system turns your balmy breath into pungent power originally appeared on Engadget on Wed, 05 Oct 2011 04:02:00 EDT. Please see our terms for use of feeds.

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Sep 22

Microbial fuel cell produces hydrogen from wastewater without wasting energy

Posted in: research, study, Today's Chili

Back in 2005, Bruce Logan and his team of Penn State researchers developed a microbial fuel cell capable of converting poop into power. Now, Logan has refined his system to the point where it can produce hydrogen from wastewater or biodegradable organic materials without using a drop of grid electricity, and without emitting even a hint of carbon dioxide. His approach, outlined in the September 19th issue of the Proceedings of the National Academy of Sciences, involves something known as reverse-electrodialysis (RED) — a process that harvests energy from the ionic discrepancy between fresh and salt water. Logan’s bacterial hydrolysis cell (pictured left) features a so-called RED stack that’s comprised of alternating positive and negative ion exchange membranes, which it uses to split water molecules into hydrogen and oxygen. Normally, this process would involve about 25 pairs of membranes, but by using RED technology in conjunction with electricity-producing exoelectrogenic bacteria, Penn State’s team was able to extract hydrogen with just five membrane pairs. All told, Logan’s cells proved to be about 58 to 64 percent energy efficient, while producing between 0.8 to 1.6 cubic meters of hydrogen for every cubic meter of liquid that passed through the system. The researchers’ results show that only one percent of that energy was used to pump water through the cells, which are completely carbon neutral, as well. According to Logan, this breakthrough demonstrates that “pure hydrogen gas can efficiently be produced from virtually limitless supplies of seawater and river water and biodegradable organic matter.” Somewhere, the US Navy is taking scrupulous notes. Full PR after the break.

[Image courtesy of Penn State / Bruce Logan]

Continue reading Microbial fuel cell produces hydrogen from wastewater without wasting energy

Microbial fuel cell produces hydrogen from wastewater without wasting energy originally appeared on Engadget on Thu, 22 Sep 2011 07:01:00 EDT. Please see our terms for use of feeds.

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Sep 20

German engineers want to halve EV manufacturing costs by 2018, seem confident about it

Posted in: car, electric vehicle, ElectricVehicle, ev, green, money, research, science, storage, Today's Chili

Yearning for an EV that can fit within your budget? You may not have to wait too long, according a group of engineers at the Karlsruhe Institute of Technology (KIT), who are aiming to halve plug-in manufacturing costs by 2018. It’s all part of something called Competence E — a €200 million ($273 million) initiative that will draw upon the expertise of 250 scientists from 25 different institutes, in the hopes of creating new and more cost-effective methods of producing power trains and batteries. Under the publicly funded project, which was announced at last week’s International Motor Show, KIT’s researchers will construct a “research factory” where they’ll develop and demonstrate their processes and technologies. According to project leader Andreas Gutsch, the idea isn’t to create concepts that could bear fruit a few decades down the road, but to develop more pragmatic solutions that can be integrated at the industrial level within a relatively short time frame. “We are no longer focused on studying individual molecules or components, but on developing solutions on the system level, which meet industrial requirements,” Gutsch told Science|Business. “We are actively approaching industry and will even intensify these efforts…We are conducting excellent research for application, not for the drawer.” A full 50 engineers will begin working on Competence E next year, with the project scheduled to wrap up by 2018. Purr past the break for more details, in the full press release.

Continue reading German engineers want to halve EV manufacturing costs by 2018, seem confident about it

German engineers want to halve EV manufacturing costs by 2018, seem confident about it originally appeared on Engadget on Tue, 20 Sep 2011 09:26:00 EDT. Please see our terms for use of feeds.

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Sep 20

Researchers convert soundwaves into electromagnetic energy, silence no longer golden

Posted in: germany, Japan, Today's Chili, video

Researchers in Japan and Germany have converted energy from soundwaves into electromagnetic energy, trapping a magnetic “spin current” between metal layers. In the experiment, when sound waves are directed at an interface between the thin metal layer and magnetic material, electrical signals are generated at a pair of electrodes attached above. When the soundwaves reach the magnetic material, this creates a spin current that gets picked up by three layers of metal. This is where the exercise class-sounding reverse spin Hall effect kicks in, transforming it into an electrical voltage.

Not to be confused with Orange’s Sound Charge T-Shirt, scientists believe that it should be possible to generate that mystical electromagnetic energy from any material in the future. At the moment, the project is looking into materials that are able to eke out more voltage from the process — perhaps a few years later screaming at our phones will give their batteries a boost? Watch the video after the break for more technical details and close-ups of the equipment.

Continue reading Researchers convert soundwaves into electromagnetic energy, silence no longer golden

Researchers convert soundwaves into electromagnetic energy, silence no longer golden originally appeared on Engadget on Tue, 20 Sep 2011 08:24:00 EDT. Please see our terms for use of feeds.

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Sep 17

Dean Kamen files patent application for an inflatable, illuminated wind turbine

Posted in: advertising, patent, patent application, PatentApplication, power, Today's Chili
Inflatable wind turbines may not be an entirely new idea, but prolific inventor Dean Kamen has detailed one of a slightly different sort in a recently published patent application. In addition to generating energy for general use, the turbine would also be able to power a set of LEDs adorning the turbine itself, which could be used to display advertising or other information using a persistence of vision effect. The application even suggests that multiple turbines could be linked together and synchronized to form one large billboard. Of course, it is still just that, a patent application — but it is assigned to Kamen’s DEKA company, so it may not be quite as far off from reality as some other applications.

Dean Kamen files patent application for an inflatable, illuminated wind turbine originally appeared on Engadget on Sat, 17 Sep 2011 18:33:00 EDT. Please see our terms for use of feeds.

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