News tagged with impurity
'Unzipped' carbon nanotubes could help energize fuel cells, batteries
Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at ...
Nanotechnology / Nanomaterials
May 27, 2012 |
4.4 / 5 (7) |
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Cu-BTC proves redox capable, opens new doors for catalysis and gas storage
What holds the surface area of several football fields in the mass equivalent of a paper clip? The answer to this question has many names and performs duties ranging from catalysis to gas storage: the metal ...
Apr 25, 2012 |
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Microbubbles provide new boost for biofuel production
The technique builds on previous research in which microbubbles were used to improve the way algae is cultivated.
Jan 26, 2012 |
4.7 / 5 (3) |
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Researchers measure and model inhomogeneous energy landscapes in graphene
(PhysOrg.com) -- If graphene is to live up to its promise as a revolutionary component of future electronics, the interactions between graphene and the surrounding materials in a device must be understood and controlled. ...
Jan 05, 2012 |
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New test could help track down and prosecute terrorists who use nerve gas and other agents
Scientists are reporting development of a first-of-its-kind technology that could help law enforcement officials trace the residues from terrorist attacks involving nerve gas and other chemical agents back ...
Chemistry / Analytical Chemistry
Dec 14, 2011 |
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I-mode powers up on alcator C-mod tokamak
A key challenge in producing fusion energy is confining the plasma long enough for the ionized hydrogen to fuse and produce net power. Suppressing plasma turbulence is one approach to this, but the resulting ...
Nov 10, 2011 |
5 / 5 (1) |
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Tokamak experiments come clean about impurity transport
A fusion reactor operates best when the hot plasma inside it consists only of fusion fuel (hydrogen's heavy isotopes, deuterium and tritium), much as a car runs best with a clean engine. But fusion fuel reactions ...
Nov 10, 2011 |
4.2 / 5 (5) |
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Small defects mean big problems for industrial solar cells
Nanoscale clustering of metal impurities at intragranular dislocations within industrial mc-Si solar cells have been observed by users from the Massachusetts Institute of Technology working with the Center ...
Nanotechnology / Nanomaterials
Oct 13, 2011 |
5 / 5 (1) |
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Clean soot particle filters
The soot particle filters found on diesel vehicles are designed to ensure that no harmful particles make their way through the exhaust pipe. Often, though, the exhaust from newer-model engines is not hot enough ...
Oct 05, 2011 |
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Current flowing along the edges of a promising quantum device is insensitive to its magnetic impurities
Conductors of electrical current, including copper, heat up and limit the ability to increase circuit densities. Unusual materials that exhibit the so-called ‘quantum spin Hall effect’, in which ...
Sep 30, 2011 |
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All that glitters is not gold
(PhysOrg.com) -- Researchers developing key new technology electronics like quantum computing or advanced detectors, as well as those studying basic material science and metal surface properties, often find ...
Sep 29, 2011 |
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Hydrogen fuel put to the test
National Physical Laboratory has developed a suite of analytical methods to detect trace-level impurities in hydrogen fuel that can affect the performance of hydrogen fuel cells – a potentially carbon-free ...
Technology / Energy & Green Tech
Sep 27, 2011 |
5 / 5 (2) |
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Innovative nanoparticle purification system uses magnetic fields
A team of Penn State University scientists has invented a new system that uses magnetism to purify hybrid nanoparticles -- structures that are composed of two or more kinds of materials in an extremely small ...
Nanotechnology / Bio & Medicine
Sep 06, 2011 |
5 / 5 (2) |
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Disorder is key to nanotube mystery
Scientists often find strange and unexpected things when they look at materials at the nanoscale -- the level of single atoms and molecules. This holds true even for the most common materials, such as water.
Nanotechnology / Nanomaterials
Aug 12, 2011 |
4.9 / 5 (9) |
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Hybrid solar system makes rooftop hydrogen
While roofs across the world sport photovoltaic solar panels to convert sunlight into electricity, a Duke University engineer believes a novel hybrid system can wring even more useful energy out of the sun's ...
Technology / Energy & Green Tech
Aug 09, 2011 |
4.8 / 5 (17) |
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