News tagged with metal nanoparticle
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 |
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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 |
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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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Energy dissipation from vibrating gold nanoparticle strongly influenced by surrounding environment
Metal nanoparticles could play a key role in next-generation light detectors, optical circuits, and cancer therapies. For these future technologies to be realized, it is important to understand what happens ...
Apr 12, 2012 |
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Physicists demonstrate quantum plasmons in atomic-scale nanoparticles
Addressing a half-century-old question, engineers at Stanford have conclusively determined how collective electron oscillations, called plasmons, behave in individual metal particles as small as just a few nanometers in diameter. ...
Mar 21, 2012 |
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Silver nanoparticles trap mercury
(PhysOrg.com) -- Anyone who thinks amalgams are limited to tooth fillings is missing something: Amalgams, which are alloys of mercury and other metals, have been used for over 2500 years in the production ...
Nanotechnology / Nanomaterials
Feb 16, 2012 |
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Monitoring the transformation of silver nanowires into gold nanotubes with in situ transmission X-ray microscopy
(PhysOrg.com) -- A technique for real-time monitoring of the galvanic replacement reaction between silver nanowires and aqueous gold salt solutions using in situ flow-cell transmission X-ray microscopy (TXM) ...
Dec 21, 2011 |
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Hydrogen released to fuel cell more quickly when stored in metal nanoparticles
Researchers from TU Delft and VU University Amsterdam in the Netherlands have demonstrated that the size of a metal alloy nanoparticle influences the speed with which hydrogen gas is released when stored in a metal hydride. ...
Sep 29, 2011 |
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Tunable nano-suspensions for light harvesting
A Syracuse University researcher has developed a patent-pending robust process to manufacture stable suspensions of metal nanoparticles capable of capturing sunlight.
Aug 22, 2011 |
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Researchers' quest for gold
For University of Wisconsin-Milwaukee researchers studying the toxicity of gold nanoparticles - a minuscule material with potentially big biomedical applications - the road to a new medical advance may or may not be paved ...
Nanotechnology / Bio & Medicine
Jul 22, 2011 |
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Researchers create rollerball-pen ink to draw circuits
(PhysOrg.com) -- Two professors from the University of Illinois; one specializing in materials science, the other in electrical engineering, have combined their talents to take the idea of printing circuits ...
Nanotechnology / Nanomaterials
Jun 28, 2011 |
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Gold nanoparticles help earlier diagnosis of liver cancer
Hepatocellular carcinoma is the most common cancer to strike the liver. More than 500,000 people worldwide, concentrated in sub-Saharan Africa and Southeast Asia, are diagnosed with it yearly. Most of those ...
Nanotechnology / Bio & Medicine
Jun 22, 2011 |
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World’s first 3D plasmon ruler: Taking the 3-D measure of macromolecules
(PhysOrg.com) -- The world's first three-dimensional plasmon rulers, capable of measuring nanometer-scale spatial changes in macrmolecular systems, have been developed by researchers with the U.S. Department ...
Jun 16, 2011 |
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Improving catalysis
(PhysOrg.com) -- Cardiff University research may help to improve the way that metal nanoparticles are used in catalysis – the process of making chemical reactions go faster.
Nanotechnology / Nanomaterials
Jun 14, 2011 |
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Ink with tin nanoparticles could print future circuit boards
(PhysOrg.com) -- Almost all electronic devices contain printed circuit boards, which are patterned with an intricate copper design that guides electricity to make the devices functional. In a new study, researchers ...
Nanotechnology / Nanomaterials
Apr 12, 2011 |
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