That said, there are other studies that support a toxic role for carbon nanotubes.
My awareness of the toxicity of carbon nanotubes is that the jury is out.
It has been thought for some time that carbon nanotubes might be able to do it.
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The conductivity of carbon nanotubes, by contrast, depends critically on size, shape and twistiness.
There has been some progress with materials that can do this, including specially engineered carbon nanotubes.
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Though the carbon nanotubes absorb infra-red light, they are almost totally transparent to the visible variety.
Some researchers are working on sponges made of carbon nanotubes that soak up hydrogen.
Carbon nanotubes have alluring properties, sometimes acting like semiconductors, other times like conductors.
But it's Friday, and this here story has real-live carbon nanotubes, so you know it's a winner.
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Carbon nanotubes and nanofibres, however, seem to be able to absorb hydrogen well, even at room temperature.
Carbon nanotubes are microscopic tubes comprised entirely of carbon, which have different chemical properties useful to solar cells.
Carbon nanotubes are not fully tested in medical applications, but should be inert.
Many have tried, and failed, to use carbon nanotubes to do these jobs.
Scientists get both types when they make a batch of carbon nanotubes.
To create his test, Jack mixed human mesothelin-specific antibodies with carbon nanotubes and coated strips of ordinary filter paper.
The nanotech buzz grew louder in the early 1990s as scientists discovered "carbon nanotubes, " soda straws of carbon just one or two nanometers wide.
And by covering the fibres with carbon nanotubes, at least 20 watt-hours per kilogram is expected by the end of next year.
Also, instead of having a single metal filament release the electrons, it relies on myriad carbon nanotubes to do the same thing.
But carbon nanotubes are very expensive to make, especially in large quantities.
Takao Someya of the University of Tokyo has built for himself a stretchy, flexible conducting material using carbon nanotubes mixed with a polymer.
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The main reason for this work, published in tomorrow's issue of the journal Science, is to expand the company's understanding of carbon nanotubes.
Instead of digging holes in the electrodes, they are coating them with a forest of carbon nanotubes, each five nanometres (billionths of a metre) wide.
To this end, carbon nanotubes (CNTs) are a significant departure from traditional silicon technologies and a very promising path to solving the challenge of energy efficiency.
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Engineers and scientists are developing many new types of materials such as carbon nanotubes, ceramic-matrix nanocomposites (and their metal-matrix and polymer-matrix equivalents), and new carbon fibers.
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Carbon nanotubes could also be used to build much more complicated, three-dimensional structures than silicon, which can only be layered so many times for structural reasons.
Researchers in the solar cell industry have known for a while that one potential avenue for improving solar cells is the use of carbon nanotubes.
These are wrapped in carbon nanotubes - tiny "straws" of pure carbon that are renowned for their electrical properties - and coated with a platinum black powder.
He observes, for example, that carbon nanotubes failed as lubricants (one of the early uses dreamed up for them) because they react with metal surfaces to form carbides.
Vivek Nair, 23, of Singapore, who started Damascus Fortune, an organization in India that has developed a technology to produce carbon nanotubes and carbon nanofibers from industrial flue gas.
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