News tagged with 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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Nanomedicines on their way through the body
(Phys.org) -- Which pathways do nanomedicines take after they have been swallowed? Scientists find a recirculation pathway of polymeric micelles using multimodal nonlinear optical microscopy.
Nanotechnology / Bio & Medicine
May 29, 2012 |
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Synthetic nano-waste does not disappear
(Phys.org) -- Tiny particles of cerium oxide do not burn or change in the heat of a waste incineration plant. They remain intact on combustion residues or in the incineration system, as a new study by Swiss ...
Nanotechnology / Bio & Medicine
May 25, 2012 |
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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 |
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Newly modified nanoparticle opens window on future gene editing technologies
The scientific and technological literature is abuzz with nanotechnology and its manufacturing and medical applications. But it is in an area with a less glitzy aura—plant sciences—where nanotechnology ...
Nanotechnology / Bio & Medicine
May 24, 2012 |
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New treatments could reduce odors in cotton fabric
Socks, T-shirts and other garments could become less hospitable to odor-causing bacteria, thanks to new antimicrobial treatments being investigated by U.S. Department of Agriculture (USDA) scientists in New ...
Nanotechnology / Bio & Medicine
May 11, 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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Brighter, smaller probes to uncover the secret lives of proteins
(Phys.org) -- Imagine tracking a deer through a forest by clipping a radio transmitter to its ear and monitoring the deer’s location remotely. Now imagine that transmitter is the size of a house, and ...
Nanotechnology / Bio & Medicine
May 08, 2012 |
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Sunscreen ingredient may pose skin cancer risk, researchers find
(Phys.org) -- As vacationers prepare to spend time outdoors this summer, many of them will pack plenty of sunscreen in hopes it will protect their bodies from overexposure, and possibly from skin cancer. But researchers at ...
Nanotechnology / Nanomaterials
May 08, 2012 |
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Power generation technology based on piezoelectric nanocomposite materials
Professor Keon- Jae Lee's research team, KAIST (Korea), has developed a nanocomposite-based nanogenerator that successfully overcomes the critical restrictions existed in previous nanogenerators and builds ...
Nanotechnology / Nanomaterials
May 07, 2012 |
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New technique uses electrons to map nanoparticle atomic structures
With dimensions measuring billionths of a meter, nanoparticles are way too small to see with the naked eye. Yet it is becoming possible for today's scientists not only to see them, but also to look inside at how the atoms ...
May 04, 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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'Green' nanoparticles, that may enhance medication delivery and improve MRI performance
Researchers at Harvard-affiliated McLean Hospital have shown a new category of "green" nanoparticles comprised of a non-toxic, protein-based nanotechnology that can non-invasively cross the blood brain barrier and is capable ...
Nanotechnology / Bio & Medicine
May 02, 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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Bejeweled: Nanotech gets boost from nanowire decorations
Like a lead actress on the red carpet, nanowires—those superstars of nanotechnology—can be enhanced by a little jewelry, too. Not the diamonds and pearls variety, but the sort formed of sinuous chains ...
Nanotechnology / Nanomaterials
Apr 27, 2012 |
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Nanoparticle
In nanotechnology, a particle is defined as a small object that behaves as a whole unit in terms of its transport and properties. It is further classified according to size: In terms of diameter, fine particles cover a range between 100 and 2500 nanometers, while ultrafine particles, on the other hand, are sized between 1 and 100 nanometers. Similarly to ultrafine particles, nanoparticles are sized between 1 and 100 nanometers, though the size limitation can be restricted to two dimensions. Nanoparticles may or may not exhibit size-related properties that differ significantly from those observed in fine particles or bulk materials .
Nanoclusters have at least one dimension between 1 and 10 nanometers and a narrow size distribution. Nanopowders are agglomerates of ultrafine particles, nanoparticles, or nanoclusters. Nanometer sized single crystals, or single-domain ultrafine particles, are often referred to as nanocrystals. Nanoparticle research is currently an area of intense scientific research, due to a wide variety of potential applications in biomedical, optical, and electronic fields. The National Nanotechnology Initiative has led to generous public funding for nanoparticle research in the United States.
For more information about Nanoparticle, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
