Related topics: cancer cells , catalyst , tumor cells , drug delivery , nanotechnology
Nanoparticle
hideIn 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.
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News tagged with nanoparticles
Energy from light and water: New photocatalytic method for the clean production of hydrogen from water
16 hours ago |
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(PhysOrg.com) -- Hydrogen-powered fuel cells and solar energy are the best hope for a more environmentally friendly and resource-sparing energy supply in the future. A combination of the two is considered to be particularly ...
Delivering drugs on time and on target
Nanotechnology / Bio & Medicine
Feb 04, 2010 |
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(PhysOrg.com) -- Northeastern professor leading research on nanocarriers that would make a whole new class of drugs available to treat cancer and other diseases
'Nanobubbles' kill cancer cells
Nanotechnology / Bio & Medicine
Feb 04, 2010 |
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(PhysOrg.com) -- Using lasers and nanoparticles, scientists at Rice University have discovered a new technique for singling out individual diseased cells and destroying them with tiny explosions. The scientists used lasers ...
Nano imagining takes turn for the better
Nanotechnology / Bio & Medicine
Feb 03, 2010 |
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(PhysOrg.com) -- Stephan Link wants to understand how nanomaterials align, and his lab's latest work is a step in the right direction.
Magnetic nanoparticles show promise for combating human cancer
Nanotechnology / Bio & Medicine
Feb 01, 2010 |
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Scientists at Georgia Tech and the Ovarian Cancer Institute have further developed a potential new treatment against cancer that uses magnetic nanoparticles to attach to cancer cells, removing them from the ...
An organic transistor paves the way for new generations of neuro-inspired computers
Nanotechnology / Bio & Medicine
Jan 22, 2010 |
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For the first time, French researchers at CNRS and CEA have developed a transistor that can mimic the main functionalities of a synapse.
New visible light photocatalyst kills bacteria, even after light turned off
Jan 19, 2010 |
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In the battle against bacteria, researchers at the University of Illinois have developed a powerful new weapon - an enhanced photocatalytic disinfection process that uses visible light to destroy harmful bacteria and viruses, ...
Graphene-Based Nanomat Could Lead to Next-Generation Catalysts
Nanotechnology / Nanomaterials
Jan 19, 2010 |
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(PhysOrg.com) -- Researchers have found a new use for graphene, the single-atom-thick sheet of carbon atoms that resembles chicken wire. Ever since graphene was first observed in 2004, its large surface area, ...
New 'nanoburrs' could add to arsenal of therapies against heart disease
Nanotechnology / Bio & Medicine
Jan 18, 2010 |
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(PhysOrg.com) -- Researchers at MIT and Harvard Medical School have built targeted nanoparticles that can cling to artery walls and slowly release medicine, an advance that potentially provides an alternative ...
Research leads to novel optofluidics platform of long optical path for robust chem/bio sensing
Jan 15, 2010 |
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A research paper that has potential implications for homeland defense, work place safety, and health care has been published in the Journal of Advanced Materials.
Scientists Quantify Nanoparticle-Protein Interactions
Nanotechnology / Bio & Medicine
Jan 13, 2010 |
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(PhysOrg.com) -- A research team at the National Institute of Standards and Technology has quantified the interaction of gold nanoparticles with important proteins found in human blood, an approach that should ...
Nanoparticle Cocktail Targets and Kills Tumors
Nanotechnology / Bio & Medicine
Jan 13, 2010 |
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A team of researchers from two of the National Cancer Institute's Centers of Cancer Nanotechnology Excellence have teamed up to develop a "cocktail" of different nanometer-sized particles that work in concert within the bloodstream ...
Highlight: Quasi-Crystalline Order at Nanoscale
Nanotechnology / Nanomaterials
Jan 11, 2010 |
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Nanoparticles have a strong tendency to form periodic structures. Mixing and matching of two different types of nanoparticles allows the formation of binary nanoparticle superlattices isostructural to ionic ...
Nanoscience goes 'big': Discovery could lead to enhanced electronics
Jan 07, 2010 |
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Nanoscience has the potential to play an enormous role in enhancing a range of products, including sensors, photovoltaics and consumer electronics. Scientists in this field have created a multitude of nano ...
'Ferropaper' is new technology for small motors, robots
Nanotechnology / Nanomaterials
Jan 05, 2010 |
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(PhysOrg.com) -- Researchers at Purdue University have created a magnetic "ferropaper" that might be used to make low-cost "micromotors" for surgical instruments, tiny tweezers to study cells and miniature ...
