News tagged with gold nanoparticles
Under the influence of magnetic drugs
(Phys.org) -- For more than three decades scientists have been investigating magnetic nanoparticles as a method of drug delivery. Now by combining three metals - iron, gold and platinum - pharmacists at the ...
Nanotechnology / Bio & Medicine
May 31, 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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Researchers direct the self-assembly of gold nanoparticles into device-ready thin films
Scientists with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley have directed the first self-assembly of nanoparticles into device-ready materials. Through ...
Apr 27, 2012 |
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New technology sheds light on viruses
(Phys.org) -- Diagnostic tests that rapidly detect disease-causing viruses in animals and humans are being developed by U.S. Department of Agriculture (USDA) scientists using a new technology called "surface-enhanced ...
Chemistry / Analytical Chemistry
Apr 10, 2012 |
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Tiny hitchhikers attack cancer cells: Gold nanostars first to deliver drug directly to cancer cell nucleus
Nanotechnology offers powerful new possibilities for targeted cancer therapies, but the design challenges are many. Northwestern University scientists now are the first to develop a simple but specialized nanoparticle that ...
Nanotechnology / Bio & Medicine
Apr 05, 2012 |
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Nanostarfruits are pure gold for research
(PhysOrg.com) -- They look like fruit, and indeed the nanoscale stars of new research at Rice University have tasty implications for medical imaging and chemical sensing.
Nanotechnology / Nanomaterials
Mar 27, 2012 |
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Gold used as safe driver of cancer drug
(PhysOrg.com) -- Gold nanoparticles can be used as delivery vehicles for platinum anticancer drugs, improving targeting and uptake into cells, according to research published in this month's edition of the ...
Nanotechnology / Bio & Medicine
Mar 21, 2012 |
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New method of monitoring protein molecules using gold nanoantennas
Scientists at Johannes Gutenberg University Mainz (JGU) in Germany have developed a new method of observing individual proteins.
Nanotechnology / Bio & Medicine
Mar 14, 2012 |
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Touch of gold improves nanoparticle fuel-cell reactions
Advances in fuel-cell technology have been stymied by the inadequacy of metals studied as catalysts. The drawback to platinum, other than cost, is that it absorbs carbon monoxide in reactions involving fuel ...
Nanotechnology / Nanomaterials
Mar 12, 2012 |
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Researchers coax gold into nanowires
Researchers at the University of Pittsburgh have coaxed gold into nanowires as a way of creating an inexpensive material for detecting poisonous gases found in natural gas. Along with colleagues at the National Energy Technology ...
Nanotechnology / Nanomaterials
Feb 21, 2012 |
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Disappearing gold a boon for nanolattices
(PhysOrg.com) -- When gold vanishes from a very important location, it usually means trouble. At the nanoscale, however, it could provide more knowledge about certain types of materials. A recent discovery ...
Jan 30, 2012 |
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Cotton computing goes live at Cornell textiles lab
(PhysOrg.com) -- Researchers from France, Italy and the United States are weaving cotton with transistors for a new look in computing. Based on news about a lab at Cornell University, wearable computing is ...
Technology / Hi Tech & Innovation
Dec 30, 2011 |
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NMR used to determine whether gold nanoparticles exhibit 'handedness'
Carnegie Mellon University's Roberto R. Gil and Rongchao Jin have successfully used NMR to analyze the structure of infinitesimal gold nanoparticles, which could advance the development and use of the tiny ...
Nanotechnology / Bio & Medicine
Dec 08, 2011 |
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New device uses gold nanoparticles to test for lung cancer
The metabolism of lung cancer patients is different than the metabolism of healthy people. And so the molecules that make up cancer patients' exhaled breath are different too. A new device pioneered at the University of Colorado ...
Nanotechnology / Bio & Medicine
Nov 17, 2011 |
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Nanoparticle imaging: A resonant improvement
Raman spectroscopy is a powerful technique for analyzing atomic structure based on the inelastic scatter of light from molecules, with diverse applications including medical imaging and chemical sensing. Researchers ...
Nanotechnology / Bio & Medicine
Oct 28, 2011 |
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Colloidal gold
Colloidal gold, also known as "nanogold", is a suspension (or colloid) of sub-micrometre-sized particles of gold in a fluid — usually water. The liquid is usually either an intense red colour (for particles less than 100 nm), or a dirty yellowish colour (for larger particles). The nanoparticles themselves can come in a variety of shapes. Spheres, rods, cubes, and caps are some of the more frequently observed ones.
Known since ancient times, the synthesis of colloidal gold was originally used as a method of staining glass. Modern scientific evaluation of colloidal gold did not begin until Michael Faraday's work of the 1850s. Due to the unique optical, electronic, and molecular-recognition properties of gold nanoparticles, they are the subject of substantial research, with applications in a wide variety of areas, including electronics, nanotechnology, and the synthesis of novel[peacock term] materials with unique properties.[peacock term]
For more information about Colloidal gold, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
