Archive for the ‘Science & Technology’ Category
JFE Quick Charging Station for electric car
Posted by surfingall on May 9, 2010
Posted in Electronics, Science & Technology | Tagged: cell phone, charger stations, electric car, environment, JFE, recharging | Leave a Comment »
Cheaper Solar Cells
Posted by surfingall on May 5, 2010
A simple chemical treatment could replace expensive antireflective solar cell coatings, bringing down the cost of crystalline silicon panels. The treatment, a one-step dip in a chemical bath, creates a highly antireflective layer of black silicon on the surface of silicon wafers, and it would cost just pennies per watt, say researchers at the National Renewable Energy Laboratory (NREL). They’ve used it to create black silicon solar cells that match the efficiency of conventional silicon cells on the market.
The crystalline silicon wafers used to make today’s solar cells are treated to create a textured surface, then coated with an antireflective layer, usually silicon nitride, using high-vacuum processes. This additional layer increases the value of a solar cell by improving its efficiency–it suppress reflection..
Posted in Science & Technology | Tagged: antireflective, crystalline, efficiency, NREL, reflection, silicon wafers | Leave a Comment »
Google Invests $38.8 Million In Wind Technology
Posted by surfingall on May 5, 2010
Google’s checkbook is wide open this week. Not only did it buy 3D interface startup BumpTop, and invest in mobile payments company Corduro, but it also just put $38.8 million into a wind farm in North Dakota. The $190 million project is being put together by NextEra Energy Resources, will produce 170 megawatts of power (enough for 55,000 homes), and will be called Peace Garden Wind. Cue the Zen meditation harp.
When it comes to renewable energy investments, Google uses a lot of solar energy itself, and has invested in startups such as AltaRock (geothermal), eSolar, and Makani Power (high-altitude wind). But this is the first time it has ever invested in an energy project rather than in a company.
Posted in Science & Technology | Tagged: 3D, checkbook, eSolar, Google, Makani Power, NextEra Energy Resources | Leave a Comment »
Platinum-Free Fuel Cell
Posted by surfingall on May 4, 2010
Fuel cells are, in principle, the most efficient way to convert hydrogen fuel into electricity. But they require expensive catalysts such as platinum to split hydrogen into ions and electrical current. Cheaper metals simply can’t withstand the harsh acidic environment of the fuel cell. Now researchers in China have developed a fuel cell that uses a new membrane material to operate in alkaline conditions, eliminating the need for an expensive catalyst. The power output of the new prototype, which uses nickel as a catalyst, is still relatively low, but it provides a first demonstration of a potentially much less expensive fuel cell.
Conventional fuel cells consist of two electrodes coated with a platinum catalyst that splits hydrogen fuel..
Posted in Science & Technology | Tagged: alkaline, catalyst, electricity, Electrodes, environment, Fuel cells, hydrogen | Leave a Comment »
A Camera from a Sheet of Fiber
Posted by surfingall on May 4, 2010
Textiles and the fibers that compose them are experiencing a sort of high-tech renaissance lately. Researchers are finding ways to turn silk into sensors by adding biological molecules to it, and turn cotton sheets into electronic fabric by bathing them in a solution of nanotubes. The idea is to use the electronic textiles, which are flexible and can be worn comfortably, to sense such things as the blood of a soldier or pathogens circulating in the air.
Now researchers at MIT have integrated a collection of light sensors into polymer fibers, creating a new type of camera. Yoel Fink, a professor of materials sciences and engineering and the lead researcher..
Posted in Science & Technology | Tagged: camera, electronic fabric, fibers, pathogens, polymer fibers, Textiles | Leave a Comment »
India Bags World’s Biggest CFL Deal
Posted by surfingall on May 1, 2010
In an effort to prevent 40 million tonnes of carbon from entering the atmosphere, India bagged the world’s largest carbon credit project that will help replace 400 million incandescent light bulbs with energy saving CFL bulbs, and that too at dirt-cheap prices, in a year. The project will allow the government, investors, discoms and CFL manufacturers to sell CFLs at Rs 15 each, instead of the current rate of Rs 100, reports The Times Of India.
Posted in Science & Technology | Tagged: carbon credit project, CFL, incandescent light bulbs, India | Leave a Comment »
Tireless diving robot feeds on the ocean’s heat
Posted by surfingall on April 29, 2010
NASA has unveiled an ocean-going robot that really can go on forever. It is the first of its kind to be fuelled entirely by renewable energy.This month the agency revealed that SOLO-TREC, a wax-filled buoy powered only by the temperature differences in the water around it, has been tirelessly diving to depths of 500 metres off the Hawaiian coast three times a day since November 2009. The float gathers data on temperature and salinity to improve studies of ocean currents.
Posted in Science & Technology | Tagged: NASA, Ocean-going robot | Leave a Comment »