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‘Artificial leaf’ makes fuel from sunlight

‘Artificial leaf’ makes fuel from sunlight
Researchers led by MIT professor Daniel Nocera have produced something they’re calling an “artificial leaf”: Like living leaves, the device can turn the energy of sunlight directly into a chemical fuel that can be stored and used later as an energy source. The artificial leaf — a silicon solar cell with different catalytic materials bonded onto its two sides — needs no external wires or control circuits to operate. Simply placed in a container of water and exposed to sunlight, it quickly begins to generate streams of bubbles: oxygen bubbles from one side and hydrogen bubbles from the other. If placed in a container that has a barrier to separate the two sides, the two streams of bubbles can be collected and stored, and used later to deliver power: for example, by feeding them into a fuel cell that combines them once again into water while delivering an electric current. The creation of the device is described in a paper published Sept. 30 in the journal Science.

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MIT Researchers are Printing Solar Cells on Sheets of Paper  Published on August 20, 2011 by admin · No Comments Solar power is a great alternative energy source, but it’s unfortunately a rather expensive one. However, researchers at MIT are working on a new and less-expensive way to make solar cells which involves printing them directly on to fabric or paper. Countries Around The Globe Opting For Solar Power Solar power, which converts sunlight into energy, is beneficial for reducing our carbon footprint and has been accepted as a greener alternative for harvesting power. While harvesting solar energy has a carbon footprint of its own, research shows a solar panel’s carbon footprint is at least 20 times smaller than that of coal. As of late, solar energy is slowly transitioning from an alternative energy source to a preferred energy source. For starters, the Australian government recently announced a $1.3 million grant to researchers who specialize in solar power. The grants, which are part of the government’s Skills Development Program, are an attempt on the part of the Australian government’s efforts to cut carbon emissions, since the country has the highest per capita in the developed world. Some estimates suggest that Australia emits around 28 metric tons of carbon per person per year and roughly represents about 1.5 percent of world emissions.

Photosynthesis Fuel Company Gets a Large Investment Green tea: Joule Energy’s SolarConverter turns carbon dioxide and sunlight into ethanol fuel at a pilot plant in Leander, Texas. Joule Unlimited, a startup based in Bedford, Massachusetts, has received $70 million to commercialize technology that uses microörganisms to turn sunlight and carbon dioxide into liquid fuel. The company claims that its genetically engineered bacteria will eventually be able to produce ethanol for as little as $1.23 a gallon or diesel fuel for $1.19 a gallon, less than half the current cost of both fossil fuels and existing biofuels.

Solar power cheaper than coal: One company says it’s cracked the code Over time I’ve grown more and more suspicious of stories about breakthrough technologies. I always think back to those heady days of EEStor, the guys who were going to make a battery that would revolutionize grid storage and electric cars alike. “EEStor CEO says game-changing energy storage device coming by 2010”! The Rossi Effect - The Rossi Effect The reaction going on inside the ECAT core is today not fully explained and only known in depth by the inventor Andrea Rossi himself. In the awaiting of a thorough Intellectual Property protection through patents Rossi is unwilling to publish all known details of the process which we choose to refer to as “The Rossi Effect”. The Rossi Effect stands for the combined exothermal reactions inside the ECAT whos reactions is referred to as Cold Fusion or Low Energy Nuclear Reactions (LENR). Cold Fusion has had some bitter taste to its name the recent decenia due to the lack of repeatability in the experiments and because of the pressure from the Hot Fusion establishment which have been receiving over 50 billion dollars of funds during the last 50 years without any major breakthroughs.

We dump 8 million tons of plastic into the ocean each year. Where does it all go? What happens to all our plastic bottles and lids and containers after we toss them out? Every single ocean now has a massive swirling plastic garbage patch The vast majority of plastic trash ends up in landfills, just sitting there and taking thousands of years to degrade. A smaller fraction gets recycled (about 9 percent in the United States). But there's another big chunk that finds its way into the oceans, either from people chucking litter into waterways or from storm-water runoff carrying plastic debris to the coasts.

Textured surface may boost power output of thin silicon solar cells Highly purified silicon represents up to 40 percent of the overall costs of conventional solar-cell arrays — so researchers have long sought to maximize power output while minimizing silicon usage. Now, a team at MIT has found a new approach that could reduce the thickness of the silicon used by more than 90 percent while still maintaining high efficiency. The secret lies in a pattern of tiny inverted pyramids etched into the surface of the silicon. These tiny indentations, each less than a millionth of a meter across, can trap rays of light as effectively as conventional solid silicon surfaces that are 30 times thicker. The new findings are being reported in the journal Nano Letters in a paper by MIT postdoc Anastassios Mavrokefalos, professor Gang Chen, and three other postdocs and graduate students, all of MIT's Department of Mechanical Engineering.

Take your briefcase outside! The entire set up gives you a very nice view of how things are working. When your solar panel is making power, your voltage regulator's LED will light up telling you that it's working. Then, your car charger's LED will light up telling you that its receiving power. Finally, after you plug your phone in, and it beeps, it tells you that it is getting free wonderful power from the sun! The entire set up with battery, giant briefcase, and large solar panel weights about 10 lbs so it's surprising light for an entire system. I am not sure how long it takes to fully charge the battery but I am sure someone would be able to calculate how much power the battery could give off.

Computer, read my lips: Emotion detector developed using a genetic algorithm A computer is being taught to interpret human emotions based on lip pattern, according to research published in the International Journal of Artificial Intelligence and Soft Computing. The system could improve the way we interact with computers and perhaps allow disabled people to use computer-based communications devices, such as voice synthesizers, more effectively and more efficiently. Karthigayan Muthukaruppanof Manipal International University in Selangor, Malaysia, and co-workers have developed a system using a genetic algorithm that gets better and better with each iteration to match irregular ellipse fitting equations to the shape of the human mouth displaying different emotions.

Energy By Tesla - Create Your Own Tesla Power System For over 90 years “Big Energy” has successfully convinced the US Government to smother and bury the biggest invention of our time… They tried to keep it hidden from you forever. Why? Because this one, simlpe invention can produce all the natural, clean ELECTRICITY! But now it’s time to expose the truth. It’s time to reveal the only system that can easily produce FREE electricity.