News tagged with metal
Fool's gold may prove an unlikely alternative to overexploited catalytic materials
Catalytic materials, which lower the energy barriers for chemical reactions, are used in everything from the commercial production of chemicals to catalytic converters in car engines. However, with current catalytic materials ...
20 hours ago |
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Small modular reactor design could be a 'SUPERSTAR'
(PhysOrg.com) -- Though most of today's nuclear reactors are cooled by water, we've long known that there are alternatives; in fact, the world's first nuclear-powered electricity in 1951 came from a reactor ...
Technology / Energy & Green Tech
22 hours ago |
4.4 / 5 (14) |
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Model analyzes shape-memory alloys for use in earthquake-resistant structures
Recent earthquake damage has exposed the vulnerability of existing structures to strong ground movement. At the Georgia Institute of Technology, researchers are analyzing shape-memory alloys for their potential ...
Feb 09, 2012 |
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New study links high levels of cadmium, lead in blood to pregnancy delay
Higher blood levels of cadmium in females, and higher blood levels of lead in males, delayed pregnancy in couples trying to become pregnant, according to a study by researchers at the National Institutes of Health and other ...
Feb 08, 2012 |
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Archive of failed joint replacements provides tips to building a better hip replacement
A study by Hospital for Special Surgery researchers has provided the first comprehensive look at just how metal-on-metal total hip replacements are failing in patients around the country. Made possible by what is thought ...
Feb 08, 2012 |
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A bronze matryoshka doll: The metal in the metal in the metal
A doll in a doll, and then one more, enveloping them from the outside – this is how Thomas Faessler explains his molecule. He packs one atom in a cage within an atom framework. With their large surfaces ...
Nanotechnology / Nanomaterials
Feb 07, 2012 |
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Copper + love chemical = big sulfur stink
When Hiroaki Matsunami, Ph.D., at Duke set out to study a chemical in male mouse urine called MTMT that attracts female mice, he didn't think he would stumble into a new field of study.
Feb 06, 2012 |
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New methodology assesses risk of scarce metals
Yale researchers have developed a methodology for governments and corporations to determine the availability of critical metals, according to a paper in Environmental Science & Technology.
Feb 06, 2012 |
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Nanodiamond coatings safe for implants: study
Nanodiamonds designed to toughen artificial joints also might prevent the inflammation caused when hardworking metal joints shed debris into the body, according to an early study published this week in the ...
Feb 05, 2012 |
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New kind of high-temperature photonic crystal could someday power everything from smartphones to spacecraft
A team of MIT researchers has developed a way of making a high-temperature version of a kind of materials called photonic crystals, using metals such as tungsten or tantalum. The new materials — which ...
Feb 03, 2012 |
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Researchers efficiently couple light from a plane wave into a surface plasmon mode
Researchers from the NIST Center for Nanoscale Science and Technology have made a grating coupler that transmits over 45 % of the incident optical energy from a plane wave into a single surface plasmon polariton (SPP) mode ...
Feb 02, 2012 |
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No future without scarce metals
It is not just in laptop computers, mobile telephones and LED screens that scarce metals are to be found but also in solar cells, batteries for mobile technologies and many other similar applications. The ...
Jan 31, 2012 |
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Reducing ion exchange particles to nano-size shows big potential
Sometimes bigger isn't better. Researchers at the U.S. Department of Energy's Savannah River National Laboratory have successfully shown that they can replace useful little particles of monosodium titanate (MST) with even ...
Nanotechnology / Nanomaterials
Jan 30, 2012 |
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A new discovery answers an old question
(PhysOrg.com) -- The transition-metal monoxide FeO is an archetypal example of a Mott insulator—a material that should conduct electricity under conventional band theories but becomes an insulator when ...
Jan 30, 2012 |
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From cancer research to energy storage, Berkeley Lab scientist takes on big challenges
On a typical day, Rizia Bardhan walks through the doors of Lawrence Berkeley National Laboratory’s Molecular Foundry and immerses herself in the tricky business of tweaking optical spectroscopy equipment ...
Jan 30, 2012 |
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Metal
In chemistry, a metal (Greek: Metallo, Μέταλλο) is an element, compound, or alloy characterized by high electrical conductivity. In a metal, atoms readily lose electrons to form positive ions (cations); those ions are surrounded by delocalized electrons, which are responsible for the conductivity. The thus produced solid is held by electrostatic interactions between the ions and the electron cloud, which are called metallic bonds.
For more information about Metal, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
