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Tag: "nanotubes" at biology news

Brightening prospects of using fluorescent nanotubes in medical applications

In a way, nanotubes are nature’s smallest candles. These tiny tubes a...s, scientists have discovered that some individual nanotubes are fluorescent. That is, they glow when they are bathed in light. Some glow brightly. Others glow d...

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

...f disease and response to drug therapy. The carbon nanotubes could be delivered into diseased cells and then exposed to light, causing them to heat up and kill only those diseased cells, Akin said....

The longest carbon nanotubes you've ever seen

...r certain materials, researchers have grown carbon nanotubes that are the longest in the world. While still sli... nanotube growth zone," said Shanov. The carbon nanotubes are extremely long compared to predecessors--the longest is 3 millimeters beyond the prior world rec...

Batten down the hatches against HIV

...i at Stanford University have chosen to use carbon nanotubes as their "means of transport". This has allowed ...workers have tested a new transport system: carbon nanotubes are known for their abilities to be absorbed by cells and to smuggle other molecules in at the same ...

Cells selectively absorb short nanotubes

DNA-wrapped single-walled carbon nanotubes (SWCNTs) shorter than about 200 nanometers readily...ld derail efforts to fast track the development of nanotubes for advanced technology applications. A significant hurdle in outlining the parameters contributing ...

Neural networking nanotubes

...anch have explored the properties of single-walled nanotubes (SWNTs) with a view to developing these materials as biologically compatible components of medical devices, sensors, and prosthetics. SWNTs are formed from carbon atoms by various techniques including deposition and resemble a rolled up sheet of chic...

Motorola researchers develop selective sensors based on carbon nanotubes

...thod for applying peptides to single walled carbon nanotubes (SWNT) in field effect transistors. "This is a ...with high sensitivity and selectivity while carbon nanotubes are well known for their electronic properties." The peptides are made of 20 or so amino acids, so...

Pure carbon nanotubes pass first in vivo test

...Anderson Cancer Center have determined that carbon nanotubes injected directly into the bloodstream of research...m a dozen organs, and found significant amounts of nanotubes only in the liver," said lead author Bruce Weisman, professor of chemistry. "The liver naturally rem...

Blood-compatible nanoscale materials possible using heparin

...n composite membranes and fibers and coated carbon nanotubes are an enabling technology," says Saravanababu Murugesan, a recent doctoral graduate in chemical and biological engineering at Rensselaer and lead author of the paper. "Our results show these novel materials have great promise in the development of i...

Nanotubes used for first time to send signals to nerve cells

...one more trick to the amazing repertoire of carbon nanotubes -- the ability to carry electrical signals to nerv...stitute for silicon in semiconductor chips, carbon nanotubes have been proposed as the basis for everything from elevator cables that could lift payloads into Ea...

Stable polymer nanotubes may have a biotech future

...andards and Technology (NIST) have created polymer nanotubes that are unusually long (about 1 centimeter) as we...ngs of the National Academy of Sciences,* the NIST nanotubes may have biotechnology applications as channels for tiny volumes of chemicals in nanofluidic reactor...

Wisconsin scientists find a way to make human collagen in the lab

...it is thin -- thinner even than the vaunted carbon nanotubes hailed by nanotechnologists -- and long. Coated with gold or silver, human collagen could form the basis of implantable electric sensors. By attaching certain biological molecules to the wire, it would be possible to create sensors that might, for e...

Detection of DNA on nanotubes offers new sensing, sequencing technologies

...aign who recently reported that DNA-wrapped carbon nanotubes could serve as sensors in living cells now say the...nd his students reported that single-walled carbon nanotubes coated with DNA could be placed in living cells and detect trace amounts of harmful contaminants. In...

Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher

...nomix, Inc., have developed devices made of carbon nanotubes that can find mutations in genes causing hereditar...es less time than conventional techniques. Carbon nanotubes are rolled-up sheets of graphite only a few nanometers wide-about the width of a molecule of DNA. Th...

Carbon nanotube absorption measured in worms, cancer cells

...e carbon-14 radioactive isotope, which enabled the nanotubes to be tracked and quantified as they were absorbed...octoral research assistant Qingguo Huang. Carbon nanotubes were discovered in 1991, and hold great promise in several areas, including pharmacology and for hyd...

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...A biochemist and an engineer have used tiny carbon nanotubes and monoclonal antibodies to detect cancer cells i...o-workers coated the surface of microscopic carbon nanotubes with a monoclonal antibody. The antibodies ?so-called guided missiles that home in on targets on the...

University of Delaware researchers develop cancer 'nanobomb'

...research team was looking at the use of the carbon nanotubes as drug delivery vehicles. Because they are smaller than the size of a single cell, the nanotubes can provide for the highly selective injection of drugs into individual cells. As they undertook ...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...nly half the width of a DNA molecule. Thousands of nanotubes could easily fit inside a typical cell. "An interesting property of carbon nanotubes is that they absorb near-infrared light waves, which are slightly longer than visible rays of light ...

Modifications render carbon nanotubes nontoxic

...notechnology (CBEN) find that water-soluble carbon nanotubes are significantly less toxic to begin with. Moreov... mitigate potential nanotechnology risks. "Carbon nanotubes are high-profile nanoparticles that are under consideration for dozens of applications in materials ...

Nanotubes inspire new technique for healing broken bones

...ientists have shown for the first time that carbon nanotubes make an ideal scaffold for the growth of bone tiss...ones, allowing them to simply inject a solution of nanotubes into a fracture to promote healing. The report appears in the June 14 issue of the American Chemica...

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