News tagged with nanoscale
Harnessing plasmonics, engineers weld nanowires with light
At the nano level, researchers at Stanford have discovered a new way to weld together meshes of tiny wires. Their work could lead to exciting new electronics and solar applications. To succeed, they called ...
Feb 06, 2012 |
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Zinc-finger proteins act as site-specific adapters for DNA-origami structures
(PhysOrg.com) -- DNA is not merely a carrier of genetic information; DNA is a useful building material for nanoscale structures. In a way similar to origami, the Japanese art of paper folding, a long single ...
Feb 02, 2012 |
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A spider web's strength lies in more than its silk
While researchers have long known of the incredible strength of spider silk, the robust nature of the tiny filaments cannot alone explain how webs survive multiple tears and winds that exceed hurricane strength.
Technology / Computer Sciences
Feb 01, 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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DNA motor programmed to navigate a network of tracks
Expanding on previous work with engines traveling on straight tracks, a team of researchers at Kyoto University and the University of Oxford have successfully used DNA building blocks to construct a motor ...
Nanotechnology / Bio & Medicine
Jan 22, 2012 |
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Researchers produce ultra-short light pulses using on-chip microresonator
(PhysOrg.com) -- Researchers from the NIST Center for Nanoscale Science and Technology and Purdue University have designed and fabricated an on-chip microresonator that converts continuous laser light into ultra-short pulses ...
Jan 19, 2012 |
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A baby crystal is born
Lead sulfide (PbS) forms when an equal number of lead and sulfur atoms exchange electrons and bond together in cubic crystals. Now scientists have determined that a structure comprising 32 lead-sulfur pairs is the smallest ...
Jan 17, 2012 |
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Team models ionic conductivity in doped ceria for use as a fuel cell electrolyte
(PhysOrg.com) -- Optimizing the conductivity of ceria based oxides, or doped ceria, is crucial to their use as electrolytes in future solid oxide fuel cells.
Jan 12, 2012 |
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Experiments prove nanoscale metallic conductivity in ferroelectrics
(PhysOrg.com) -- The prospect of electronics at the nanoscale may be even more promising with the first observation of metallic conductance in ferroelectric nanodomains by researchers at Oak Ridge National ...
Jan 09, 2012 |
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Peering into the interfaces of nanoscale polymeric materials
(PhysOrg.com) -- The development of polymer nanostructures and nanoscale devices for a wide variety of applications could emerge from new information about the interplay between nanoscale interfaces in polymeric ...
Jan 09, 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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A new spin in diamonds for quantum technologies
(PhysOrg.com) -- To explore the future potential of diamonds in quantum devices, researchers from Macquarie University have collaborated with the University of Stuttgart and University of Ulm in Germany towards ...
Dec 20, 2011 |
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Carving at the nanoscale
Researchers at the Catalan Institute of Nanotechnology have successfully demonstrated a new method for producing a wide variety of complex hollow nanoparticles. The work, published this week in Science, applies well known ...
Nanotechnology / Nanomaterials
Dec 08, 2011 |
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Researchers develop one of the world's smallest electronic circuits
A team of scientists, led by Guillaume Gervais from McGill's Physics Department and Mike Lilly from Sandia National Laboratories, has engineered one of the world's smallest electronic circuits. It is formed ...
Dec 07, 2011 |
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First molybdenite microchip
(PhysOrg.com) -- Molybdenite, a new and very promising material, can surpass the physical limits of silicon. EPFL scientists have proven this by making the first molybdenite microchip, with smaller and more ...
Nanotechnology / Nanomaterials
Dec 05, 2011 |
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Nanoscopic scale
The nanoscopic scale usually refers to structures with a length scale applicable to nanotechnology, usually cited as 1-100 nanometers. The nanoscopic scale is roughly speaking a lower bound to the mesoscopic scale for most solids.
For technical purposes, the nanoscopic scale is the size at which the expected fluctuations of the averaged properties due to the motion and behavior of individual particles can no longer be reduced to below some desirable threshold (often a few percent), and must be rigorously established within the context of any particular problem.
The 'nanoscopic scale' is sometimes marked as the point where the properties of a material change; above this point, the properties of a material are caused by 'bulk' or 'volume' effects, namely which atoms are present, how they are bonded, and in what ratios. Below this point, the properties of a material change, and while the type of atoms present and their relative orientations are still important, 'surface area effects', also referred to as quantum effects, become more apparent-these effects are due to the geometry of the material (how thick it is, how wide it is, etc), which, at these low dimensions, can have a drastic effect on quantized states, and thus the properties of a material.
For more information about Nanoscopic scale, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
