News tagged with metal
New device warns workers of high levels of airborne metals in minutes rather than weeks
Scientists are reporting development of a new paper-based device that can warn workers that they are being exposed to potentially unhealthy levels of airborne metals almost immediately, instead of the weeks ...
Chemistry / Analytical Chemistry
May 31, 2012 |
5 / 5 (1) |
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A super tiny giraffe (w/ Video)
Shaahin Amini was ready to quit. The Ph.D. student at the University of California, Riverside's Bourns College of Engineering had spent three hours looking into a microscope scanning a maze of black-and-white crosshatched ...
May 30, 2012 |
5 / 5 (4) |
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Scientists evaluate different antimicrobial metals for use in water filters
Porous ceramic water filters are often coated with colloidal silver, which prevents the growth of microbes trapped in the micro- and nano-scale pores of the filter. Other metals such as copper and zinc have also been shown ...
Nanotechnology / Bio & Medicine
May 24, 2012 |
4 / 5 (1) |
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How ion bombardment reshapes metal surfaces
To modify a metal surface at the scale of atoms and molecules — for instance to refine the wiring in computer chips or the reflective silver in optical components — manufacturers shower it with ions. ...
May 23, 2012 |
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Scientists announce coalition to develop the world's cleanest passenger locomotive
Plans to create the world's first carbon-neutral higher-speed locomotive were announced today by the Coalition for Sustainable Rail (CSR), a collaboration of the University of Minnesota's Institute on the Environment (IonE) ...
Technology / Energy & Green Tech
May 22, 2012 |
3.5 / 5 (2) |
2
Making microscopic machines using metallic glass
Researchers in Ireland have developed a new technology using materials called bulk metallic glasses to produce high-precision molds for making tiny plastic components. The components, with detailed microscopically patterned ...
May 22, 2012 |
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Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
Amid growing concerns about the spread of harmful mercury in plants and animals, a new study by researchers from The Johns Hopkins University and The National Aquarium has compared levels of the chemical in ...
May 21, 2012 |
3.3 / 5 (4) |
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Direct digital: Novel casting process could transform how complex metal parts are made
A Georgia Tech research team has developed a novel technology that could change how industry designs and casts complex, costly metal parts. This new casting method makes possible faster prototype development ...
May 18, 2012 |
4.8 / 5 (5) |
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'Copper pump's' potential benefit in cancer treatment
(Phys.org) -- A team of University of California, San Diego researchers has made new discoveries about a copper-transporting protein in the membranes of human cells that drug-discovery scientists can co-opt ...
May 17, 2012 |
4 / 5 (3) |
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Researchers create low-cost, effective method for measuring exposure to toxic metals
(Phys.org) -- Two Colorado State University professors have developed a simple, low-cost method of determining levels of heavy metals in contaminated air using filter paper, water and a little chemistry.
Chemistry / Analytical Chemistry
May 17, 2012 |
5 / 5 (1) |
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In metallic glasses, researchers find a few new atomic structures
Drawing on powerful computational tools and a state-of-the-art scanning transmission electron microscope, a team of University of Wisconsin-Madison and Iowa State University materials science and engineering researchers has ...
May 11, 2012 |
3.4 / 5 (7) |
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Hybrid 'Janus' nanoparticles made from gold and titania have high catalytic activity and extraordinary durability
As recently as twenty-five years ago, chemists considered gold to be one of the most inert metallic elements, until the discovery that nanoscale-sized dispersions of gold had high catalytic activity forced ...
Nanotechnology / Nanomaterials
May 10, 2012 |
5 / 5 (4) |
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Peru says 5,000 birds, nearly 900 dolphins dead
The Peruvian government said Wednesday that 5,000 birds, mostly pelicans, and nearly 900 dolphins have died off the country's northern coast, possibly due to rising temperatures in Pacific waters.
May 09, 2012 |
3.9 / 5 (7) |
3
Materials science: Perfecting the defect
Strong metals have a tendency to be less ductile — unless the metal happens to be a peculiar form of copper known as nanotwinned copper. The crystal structure of nanotwinned copper exhibits many closely-spaced ...
Nanotechnology / Nanomaterials
May 03, 2012 |
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Order from disorder
NPL and University of Leicester scientists have explored a new way of ordering proteins for materials engineering at the nanoscale, using natural biological phenomena as a guide.
May 02, 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.
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