News tagged with nanoparticles
Quantum dot LEDs get brighter, more efficient
(Phys.org) -- While quantum dot-based light-emitting diodes (QLEDs) are not made of organic materials, they share many of the same advantages as organic LEDs (OLEDs). For instance, both QLEDs and OLEDs outshine ...
Nanotechnology / Nanomaterials
Apr 20, 2012 |
4.8 / 5 (14) |
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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 |
4.6 / 5 (8) |
7
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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 |
5 / 5 (7) |
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Research team uses nanoparticles to make paper waterproof and magnetic
(Phys.org) -- Researchers at the Istituto Italiano di Tecnologia in Genoa, led by Roberto Cingolani, have devised a means for connecting cellulose fibers in ordinary paper with nanoparticles resulting in new desired properties, ...
Nanotechnology / Nanomaterials
Apr 20, 2012 |
4.4 / 5 (8) |
1
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Nano-sized 'factories' churn out proteins
Drugs made of protein have shown promise in treating cancer, but they are difficult to deliver because the body usually breaks down proteins before they reach their destination.
Nanotechnology / Bio & Medicine
Apr 09, 2012 |
5 / 5 (6) |
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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 |
4.5 / 5 (17) |
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'Dark plasmons' transmit energy
Microscopic channels of gold nanoparticles have the ability to transmit electromagnetic energy that starts as light and propagates via "dark plasmons," according to researchers at Rice University.
Feb 09, 2012 |
4.8 / 5 (11) |
1
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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 |
4.1 / 5 (10) |
6
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Scientists invent long-lasting, near infrared-emitting material
Materials that emit visible light after being exposed to sunlight are commonplace and can be found in everything from emergency signage to glow-in-the-dark stickers. But until now, scientists have had little ...
Nanotechnology / Nanomaterials
Nov 20, 2011 |
4.5 / 5 (26) |
10
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Transistors are made from natural cotton fibers
(PhysOrg.com) -- Smarter, more functional clothing incorporating electronics may be possible in the near future, according to a study co-authored by Cornell fiber scientist Juan Hinestroza.
Nanotechnology / Nanomaterials
Oct 27, 2011 |
5 / 5 (4) |
1
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Nanobelts support manipulation of light
(PhysOrg.com) -- They look like 2-by-4s, but the materials being created in a Rice University lab are more suited to construction with light.
Oct 14, 2011 |
5 / 5 (2) |
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Building crystalline materials from nanoparticles and DNA
Nature is a master builder. Using a bottom-up approach, nature takes tiny atoms and, through chemical bonding, makes crystalline materials, like diamonds, silicon and even table salt. In all of them, the properties of the ...
Nanotechnology / Nanomaterials
Oct 13, 2011 |
5 / 5 (3) |
2
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Scientists combine tumor-targeting peptides and nanoparticles to destroy glioblastoma
Glioblastoma is one of the most aggressive forms of brain cancer. Rather than presenting as a well-defined tumor, glioblastoma will often infiltrate the surrounding brain tissue, making it extremely difficult to treat surgically ...
Nanotechnology / Bio & Medicine
Oct 03, 2011 |
5 / 5 (6) |
4
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Twisted crystals point way toward active optical materials
(PhysOrg.com) -- A nanoscale game of "now you see it, now you don't" may contribute to the creation of metamaterials with useful optical properties that can be actively controlled, according to scientists ...
Sep 29, 2011 |
5 / 5 (4) |
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Engineers discover nanoscale balancing act that mirrors forces at work in living systems
(PhysOrg.com) -- A delicate balance of atomic forces can be exploited to make nanoparticle superclusters that are uniform in size---an attribute that's important for many nanotech applications but hard to ...
Aug 23, 2011 |
4.4 / 5 (11) |
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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.
