Imagine tiny cracks in your patio table healing by themselves, or the first small scratch on your new car disappearing by itself. This and more may be possible with self-healing coatings being developed at the University of Illinois.
The new coatings are designed to better protect materials from the effects of environmental exposure. Applications range from automotive paints and marine varnishes to the thick, rubbery coatings on patio furniture and park benches.
"Starting from our earlier work on self-healing materials at the U. of I., we have now created self-healing coatings that automatically repair themselves and prevent corrosion of the underlying substrate," said Paul Braun, a University Scholar and professor of materials science and engineering. Braun is corresponding author of a paper accepted for publication in the journal Advanced Materials, and posted on its Web site. READ MORE....
Source: ScienceDaily
Wednesday, December 10, 2008
Now, chromium-free coatings to protect cars against rust
A new chromium-free coating can help protect cars against rust, reveals new study.
Researchers at the Fraunhofer Institutes for Silicate Research ISC in Würzburg and for Machine Tools and Forming Technology IWU in Chemnitz, developed an alternative anti-corrosion method based on nanocomposites as against the long-standing chromium plating prohibited since 2007.
The boffins along with colleagues at the Institute for Corrosion Protection Dresden GmbH had submerged steel sheets into a coating sol, applied a power coating and exposed them to various tests to produce the new nanomaterials.
While the steel sheets were kept in a chamber filled with atomized brine for 360 hours, or 15 days, at a temperature of 35 degrees, the metal sheets had also been placed in an environment chamber with a relative humidity of 100 percent for 240 hours, or 10 days.
ISC project manager Dr. Johanna Kron said: “These coatings protect most galvanized materials almost as well as commercial yellow chrome plating. Indeed, the new coatings are often even more effective than the chromium-free system and chromium(III) passivation currently on the market.”
The study also found that the chromium-free coated metal sheets, which were less than a thousandth of a millimeter thick, could be formed in exactly the same way as yellow chrome plated sheets.
Kron revealed that the corrosion-proofing system could be expected to hit the market in around five years. (ANI)
Source: http://www.freshnews.in/now-chromium-free-coatings-to-protect-cars-against-rust-103493
Researchers at the Fraunhofer Institutes for Silicate Research ISC in Würzburg and for Machine Tools and Forming Technology IWU in Chemnitz, developed an alternative anti-corrosion method based on nanocomposites as against the long-standing chromium plating prohibited since 2007.
The boffins along with colleagues at the Institute for Corrosion Protection Dresden GmbH had submerged steel sheets into a coating sol, applied a power coating and exposed them to various tests to produce the new nanomaterials.
While the steel sheets were kept in a chamber filled with atomized brine for 360 hours, or 15 days, at a temperature of 35 degrees, the metal sheets had also been placed in an environment chamber with a relative humidity of 100 percent for 240 hours, or 10 days.
ISC project manager Dr. Johanna Kron said: “These coatings protect most galvanized materials almost as well as commercial yellow chrome plating. Indeed, the new coatings are often even more effective than the chromium-free system and chromium(III) passivation currently on the market.”
The study also found that the chromium-free coated metal sheets, which were less than a thousandth of a millimeter thick, could be formed in exactly the same way as yellow chrome plated sheets.
Kron revealed that the corrosion-proofing system could be expected to hit the market in around five years. (ANI)
Source: http://www.freshnews.in/now-chromium-free-coatings-to-protect-cars-against-rust-103493
A new water treatment method
Treating industrial wastewater with scrap iron can be a cheap and effective way to reduce pollution from factories
SCRAP conjures up visions of rusting junkyards on the wrong side of the tracks. But this image could soon be given a green makeover. Researchers have found that iron filings from factories can be a cheap and efficient way to clean up polluted water. Because such scrap is widely available, the idea could be particularly useful in developing countries.
The new approach is being used to treat wastewater in the Taopu Industrial District of Shanghai, which is home to many small pharmaceutical, petrochemical and textile factories that discharge water contaminated with dyes, phosphorus and nitrogen. The project, which began in August 2006, now treats about 60,000 cubic metres (about 13m gallons) a day of industrially contaminated water—which is about the volume of municipal wastewater that a small town generates. READ MORE...
SCRAP conjures up visions of rusting junkyards on the wrong side of the tracks. But this image could soon be given a green makeover. Researchers have found that iron filings from factories can be a cheap and efficient way to clean up polluted water. Because such scrap is widely available, the idea could be particularly useful in developing countries.
The new approach is being used to treat wastewater in the Taopu Industrial District of Shanghai, which is home to many small pharmaceutical, petrochemical and textile factories that discharge water contaminated with dyes, phosphorus and nitrogen. The project, which began in August 2006, now treats about 60,000 cubic metres (about 13m gallons) a day of industrially contaminated water—which is about the volume of municipal wastewater that a small town generates. READ MORE...
Source: The Economist
Sunday, December 7, 2008
Fusion breakthrough will boost power output
Fusion breakthrough will boost power output
Dec. 4, 2008David Chandler, MIT News OfficeResearch carried out at MIT's Alcator C-Mod fusion reactor may have brought the promise of fusion as a future power source a bit closer to reality, though scientists caution that a practical fusion powerplant is still decades away.
Fusion, the reaction that produces the sun's energy, is thought to have enormous potential for future power generation because fusion plant operation produces no emissions, fuel sources are potentially abundant, and it produces relatively little (and short-lived) radioactive waste. But it still faces great hurdles."There's been a lot of progress," says physicist Earl Marmar, division head of the Alcator Project at the MIT Plasma Science and Fusion Center (PSFC). "We're learning a lot more about the details of how these things work."The Alcator C-Mod reactor, in operation since 1993, has the highest magnetic field and the highest plasma pressure of any fusion reactor in the world, and is the largest fusion reactor operated by any university. READ MORE...
The story is also available in the Dec. 3, 2008, edition of MIT Tech Talk, http://web.mit.edu/newsoffice/2008/techtalk53-10.pdf
SOURCE: MIT
Dec. 4, 2008David Chandler, MIT News OfficeResearch carried out at MIT's Alcator C-Mod fusion reactor may have brought the promise of fusion as a future power source a bit closer to reality, though scientists caution that a practical fusion powerplant is still decades away.
Fusion, the reaction that produces the sun's energy, is thought to have enormous potential for future power generation because fusion plant operation produces no emissions, fuel sources are potentially abundant, and it produces relatively little (and short-lived) radioactive waste. But it still faces great hurdles."There's been a lot of progress," says physicist Earl Marmar, division head of the Alcator Project at the MIT Plasma Science and Fusion Center (PSFC). "We're learning a lot more about the details of how these things work."The Alcator C-Mod reactor, in operation since 1993, has the highest magnetic field and the highest plasma pressure of any fusion reactor in the world, and is the largest fusion reactor operated by any university. READ MORE...
The story is also available in the Dec. 3, 2008, edition of MIT Tech Talk, http://web.mit.edu/newsoffice/2008/techtalk53-10.pdf
SOURCE: MIT
Will solar power ever be as cheap as coal?
Will solar power ever be as cheap as coal?
Some predict that within five years, it could rival fossil-fuel energy.
Lexington, Mass.
“Solar power is the energy of the future – and always will be.”
That tired joke, which has dogged solar-generated electricity for decades due to its high cost, could be retired far sooner than many think.
While solar contributes less than 1 percent of the energy generated in the United States today, its costs are turning sharply downward.
Whether using mirrors that focus desert sunlight to harvest heat and spin turbines or rooftop photovoltaic panels that turn sunshine directly into current, solar is on track to deliver electricity to residential users at a cost on par with natural gas and perhaps even coal within the next four to seven years, industry experts say.
“We’re confident that we’re not that far away from a tipping point where energy from solar will be competitive with fossil fuels,” said Ray Kurzweil, a National Academy of Engineers panel member after the panel reported on the future of solar power in February. “I personally believe that we’re within five years of that tipping point.” READ MORE...
Source: The Christian Science Monitor
Some predict that within five years, it could rival fossil-fuel energy.
Lexington, Mass.
“Solar power is the energy of the future – and always will be.”
That tired joke, which has dogged solar-generated electricity for decades due to its high cost, could be retired far sooner than many think.
While solar contributes less than 1 percent of the energy generated in the United States today, its costs are turning sharply downward.
Whether using mirrors that focus desert sunlight to harvest heat and spin turbines or rooftop photovoltaic panels that turn sunshine directly into current, solar is on track to deliver electricity to residential users at a cost on par with natural gas and perhaps even coal within the next four to seven years, industry experts say.
“We’re confident that we’re not that far away from a tipping point where energy from solar will be competitive with fossil fuels,” said Ray Kurzweil, a National Academy of Engineers panel member after the panel reported on the future of solar power in February. “I personally believe that we’re within five years of that tipping point.” READ MORE...
Source: The Christian Science Monitor
ISRO and Tata Motors: Towards hydrogen fuel cells operated bus
(Dr. Lalit Kishore)
It was in 2006 that ISRO and Tata Motors had entered into an agreement to design and develop a hydrogen fuel cell for operating a Tata bus as a replacement to fossil fuel. V. Gandhi is leading the team of ISRO researchers working on this project.
According to report by Radhakrishna Rao, everything is going as planned and the hydrogen fuel cell system will be integrated into the Tata bus by the first quarter of 2009. READ MORE...
It was in 2006 that ISRO and Tata Motors had entered into an agreement to design and develop a hydrogen fuel cell for operating a Tata bus as a replacement to fossil fuel. V. Gandhi is leading the team of ISRO researchers working on this project.
According to report by Radhakrishna Rao, everything is going as planned and the hydrogen fuel cell system will be integrated into the Tata bus by the first quarter of 2009. READ MORE...
Indian industry taking to green technologies with relish
December 7th, 2008 - 12:56 pm ICT by IANS -
Poznan (Poland), Dec 7 (IANS) Indian entrepreneurs are taking to green technologies with a relish and do not see intellectual property rights (IPR) as a barrier, a new international study has found.Co-author of the study, David Ockwell of the University of Sussex in Britain, said that he had found Indian industry driving collaborations with firms around the world to work jointly on developing green technologies in the five areas studied:
* Integrated gasification combined cycle (IGCC) for power generation;* Energy efficient technology adoption in Indian small and medium enterprises (SMEs), specifically the glass and foundry industries;* Wind energy;* Solar photovoltaic (PV) cells; and* Hybrid vehicles
The study was carried out by a joint team from four organisations: The Energy and Resources Institute (TERI) based in New Delhi; the Science & Technology Policy Research Unit (SPRU) of the University of Sussex; the Institute for Development Studies (IDS) in Sussex and the Britain-based Margaree Consultants.
Announcing the interim results of the study on the sidelines of the Dec 1-12 UN Framework Convention on Climate Change (UNFCCC) summit in this city in western Poland, Ockwell said he had found technology transfer to the Indian firms had led not only to the transfer of goods and services, but also of the skills and know-how for operation and maintenance as well as the knowledge and expertise behind the technology.
This, he said, had led to new production and technological capacity.
The study, initiated by the governments of India and Britain, had been meant to identify barriers to the transfer of low-carbon energy technology.
In the area of IGCC for power generation, the researchers found the key barrier was having to work with high-ash content in Indian coal. The other problem was that the technology had not yet been commercialised anywhere in the world.
The researchers felt there was high potential for international collaboration here, Ockwell said, though he did find international firms were a bit cautious about which Indian firm they collaborated with.
The spread of green technologies in India is of course intimately connected with their take-up by the SMEs, which account for one-third of the country’s exports, half of its industrial output and are the largest employers after agriculture.
Ockwell said the researchers had found that by and large SMEs use indigenous knowledge and techniques, their resource use is inefficient, they do not have off-the-shelf solutions easily available and they conduct little research and development (R&D).
But, the researchers found many entrepreneurs in the SME sector keen on green technology collaborations, and they did not think IPRs were an issue.
“This leads to an interesting high potential for aggregate emissions reductions without issues associated with large industrial installations,” Ockwell said, though it is “reliant on willingness of international firms to share technology”.
He had found a “strong emphasis on long term international, public-private-NGO collaboration” and that a “possible domestic policy push - switch from coal to gas in the specific industrial areas around Delhi, Agra and Jaipur” was accelerating the interest of SMEs in green technologies.
In the area of wind energy, of course, India has done very well, with Suzlon being one of the top five wind energy firms globally. The researchers found that Indian wind energy firms had “used commercial approach to access IPRs via acquisition and licensing”, Ockwell said, “for example through R&D in Netherlands and marketing in Denmark”.
In the area of manufacturing solar PV cells, the researchers had found that the Indian market export driven and to date IPRs for manufacturing equipment largely stays with foreign firms.
“The Indian firms’ niche is to produce at lower cost,” Ockwell said.
“IPRs are not a barrier as yet, but they could become more of an issue as firms move towards manufacture along the value chain and more automated processes, such as PV grade silicon and thin film. This will be dependent on how concentrated relevant parts of the value chain are.”
Ockwell had found that recent developments in the solar PV cell manufacturing market were largely driven by domestic policy. This June, the Indian government placed development of solar energy at the centre of its National Action Plan on Climate Change.
The researchers found “strong domestic efforts in India to develop hybrid technology, driven also by acquisition such as the Tata purchase of the Norweigan electric vehicle company Miljo, as well as collaboration in development of the National Hybrid Propulsion Platform.
Ockwell said Indian entrepreneurs - many of whom had moved from large car manufacturing firms abroad - were licensing new hybrid technologies from second tier firms in the West.
Overall, he added, Indian firms found the only barriers to transfer of green technologies were people. “Where there’s a will, there’s a way, they said.”
However, the researchers were worried that Indian firms seemed happy to follow and not lead research in green technologies. “This leaves unanswered the question of long term technological capacity building,” Ockwell said.
(Joydeep Gupta can be contacted at joydeep.g@ians.in)
Source: www.thaindian.com
Poznan (Poland), Dec 7 (IANS) Indian entrepreneurs are taking to green technologies with a relish and do not see intellectual property rights (IPR) as a barrier, a new international study has found.Co-author of the study, David Ockwell of the University of Sussex in Britain, said that he had found Indian industry driving collaborations with firms around the world to work jointly on developing green technologies in the five areas studied:
* Integrated gasification combined cycle (IGCC) for power generation;* Energy efficient technology adoption in Indian small and medium enterprises (SMEs), specifically the glass and foundry industries;* Wind energy;* Solar photovoltaic (PV) cells; and* Hybrid vehicles
The study was carried out by a joint team from four organisations: The Energy and Resources Institute (TERI) based in New Delhi; the Science & Technology Policy Research Unit (SPRU) of the University of Sussex; the Institute for Development Studies (IDS) in Sussex and the Britain-based Margaree Consultants.
Announcing the interim results of the study on the sidelines of the Dec 1-12 UN Framework Convention on Climate Change (UNFCCC) summit in this city in western Poland, Ockwell said he had found technology transfer to the Indian firms had led not only to the transfer of goods and services, but also of the skills and know-how for operation and maintenance as well as the knowledge and expertise behind the technology.
This, he said, had led to new production and technological capacity.
The study, initiated by the governments of India and Britain, had been meant to identify barriers to the transfer of low-carbon energy technology.
In the area of IGCC for power generation, the researchers found the key barrier was having to work with high-ash content in Indian coal. The other problem was that the technology had not yet been commercialised anywhere in the world.
The researchers felt there was high potential for international collaboration here, Ockwell said, though he did find international firms were a bit cautious about which Indian firm they collaborated with.
The spread of green technologies in India is of course intimately connected with their take-up by the SMEs, which account for one-third of the country’s exports, half of its industrial output and are the largest employers after agriculture.
Ockwell said the researchers had found that by and large SMEs use indigenous knowledge and techniques, their resource use is inefficient, they do not have off-the-shelf solutions easily available and they conduct little research and development (R&D).
But, the researchers found many entrepreneurs in the SME sector keen on green technology collaborations, and they did not think IPRs were an issue.
“This leads to an interesting high potential for aggregate emissions reductions without issues associated with large industrial installations,” Ockwell said, though it is “reliant on willingness of international firms to share technology”.
He had found a “strong emphasis on long term international, public-private-NGO collaboration” and that a “possible domestic policy push - switch from coal to gas in the specific industrial areas around Delhi, Agra and Jaipur” was accelerating the interest of SMEs in green technologies.
In the area of wind energy, of course, India has done very well, with Suzlon being one of the top five wind energy firms globally. The researchers found that Indian wind energy firms had “used commercial approach to access IPRs via acquisition and licensing”, Ockwell said, “for example through R&D in Netherlands and marketing in Denmark”.
In the area of manufacturing solar PV cells, the researchers had found that the Indian market export driven and to date IPRs for manufacturing equipment largely stays with foreign firms.
“The Indian firms’ niche is to produce at lower cost,” Ockwell said.
“IPRs are not a barrier as yet, but they could become more of an issue as firms move towards manufacture along the value chain and more automated processes, such as PV grade silicon and thin film. This will be dependent on how concentrated relevant parts of the value chain are.”
Ockwell had found that recent developments in the solar PV cell manufacturing market were largely driven by domestic policy. This June, the Indian government placed development of solar energy at the centre of its National Action Plan on Climate Change.
The researchers found “strong domestic efforts in India to develop hybrid technology, driven also by acquisition such as the Tata purchase of the Norweigan electric vehicle company Miljo, as well as collaboration in development of the National Hybrid Propulsion Platform.
Ockwell said Indian entrepreneurs - many of whom had moved from large car manufacturing firms abroad - were licensing new hybrid technologies from second tier firms in the West.
Overall, he added, Indian firms found the only barriers to transfer of green technologies were people. “Where there’s a will, there’s a way, they said.”
However, the researchers were worried that Indian firms seemed happy to follow and not lead research in green technologies. “This leaves unanswered the question of long term technological capacity building,” Ockwell said.
(Joydeep Gupta can be contacted at joydeep.g@ians.in)
Source: www.thaindian.com
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