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Energy

The energy-harvesting tree collects energy from light, temperature differences, and vibrat...

In January, the VTT Technical Centre of Finland unveiled its decorative, mass-producible organic photovoltaic (OPV) leaves designed to capture energy from interior lighting to power small devices and sensors. Now, the company has followed the logical path and come up with an energy-harvesting tree that generates electricity from a variety of sources.  Read More

Underside of the Millennium Bridge, which swayed due to the cadence of those walking acros...

Just two days after opening, The London Millennium Footbridge was closed to eliminate its sway. Turns out staying with the sway would have had its benefits, as researchers have found that it reduces the amount of energy expended when walking across the bridge.  Read More

Just a couple of sprays before bed allows the melatonin formula to soak into the skin

A little more than a year ago, Gizmag featured an Indiegogo campaign that was marketing Sprayable Energy, which delivered a caffeine hit through the skin. Now the same company, Sprayable, has launched another campaign for a spray claimed to do the opposite – it puts you to sleep. Gizmag got a sample of Sprayable Sleep to put these claims to the test.  Read More

The Envirotouch switches can replace standard switches and outlets and automatically shut ...

The modern home is chock-full of electrical appliances, many of which remain on standby when not in use and add unnecessary bulk to our energy bills. Thankfully, those looking to trim down on power usage aren't exactly short of options, with many devices emerging over the years designed to shut off our appliances at the wall. The Envirotouch is the latest take on the smart, energy-saving switch, relying on one-touch timer buttons to cut power to our appliances soon after we stop using them.  Read More

Researchers have achieved a solar energy to hydrogen conversion efficiency of 12.3% using ...

Using solar energy to split water into its component parts, thereby allowing the solar energy to be stored as hydrogen fuel, generally involves one of two methods: using photoelectrochemical cells to directly split the water, or using solar cells to produce electricity to power an electrolyzer that separates the water molecules. One problem associated with the latter method is that it currently relies on rare metals. But now scientists from Ecole Polytechnique Federale de Lausanne (EPFL) in Switzerland have managed to do so using common materials, and have achieved a record solar energy to hydrogen conversion efficiency in the process.  Read More

Haus Hohlen has had a new building 'envelope' built around it

When houses are extended, it's generally the case that an additional section is simply added on to one part of the building. A house in Austria, however, has had an entirely new exterior built around it. The existing building of Haus Hohlen is now part of the house's interior.  Read More

Researchers at ANU have replicated the primary capture of energy from sunlight (Photo: Shu...

Researchers at the Australian National University are one step closer to creating an artificial photosynthesis system after replicating one of its crucial steps. The development may lead to an abundant source of hydrogen, a cheap and clean fuel that could replace all petroleum products.  Read More

A look at the cathode composite under an electron microscope (Image: HIU)

There's another promising contender in the race to supplant the dominance of lithium-ion and metal-hydride based batteries in the world of energy storage. New research from the Karlsruhe Institute of Technology's (KIT's) Helmholtz Institute Ulm (HIU) details the development of an electrolyte that can be used in new magnesium-sulfur battery cells that would be more efficient and inexpensive than the dominant types of batteries in use today.  Read More

Sawdust can be converted into a fuel additive – among other things – using a new chemical ...

This is science at its best: Decades ago, the only practical use for sawdust was to soak up vomit, but thanks to scientists at a Belgian university who developed a new chemical process, that same sawdust could soon be used to create gasoline and other products normally derived from petroleum.  Read More

Natural vibrations caused by two surfaces with different work functions repelling and attr...

Electrical energy is normally generated through heat, motion, nuclear transformation, or chemical reactions, but now scientists at VTT Technical Research Center of Finland have devised a new method that involves mechanical vibrations. They figured out how to "harvest" the vibrational energy that occurs naturally when two surfaces with different work functions are connected via electrodes, and this energy could potentially be used to power wearables and other low-power electronics.  Read More

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