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Nanotubes

Carbon nanotube-reinforced polyurethane could make for lighter and more durable wind turbi...

In the effort to capture more energy from the wind, the blades of wind turbines have become bigger and bigger to the point where the diameter of the rotors can be over 100 m (328 ft). Although larger blades cover a larger area, they are also heavier, which means more wind is needed to turn the rotor. The ideal combination would be blades that are not only bigger, but also lighter and more durable. A researcher at Case Western Reserve University has built a prototype blade from materials that could provide just such a winning combination.  Read More

Scientists have grafted olfactory receptors onto carbon nanotubes, in a step towards produ...

While people may have laughed at the mechanical-nose-bearing Odoradar device that Elmer Fudd once used to track Bugs Bunny, the development of real devices that can "smell" recently took a step forward, as researchers from the University of Pennsylvania grafted olfactory receptor proteins onto carbon nanotubes. These proteins are ordinarily located on the outer membrane of cells within the nose. When chemicals that enter the nose bind with the proteins, a cellular response is triggered, that leads to the perception of smell. It is hoped that a synthetic version of that same response could be possible, within sensing devices incorporating the nanotubes.  Read More

Armchair quantum wire could be used to create cables that can transmit electricity over lo...

The United States’ copper-based electric grid is estimated to leak electricity at an estimated five percent per 100 miles (161 km) of transmission. With power plants usually located far from where the electricity they produce will actually be consumed, this can add up to a lot of wasted power. A weave of metallic nanotubes known as armchair quantum wire (AQW) is seen as an ideal solution as it can carry electricity over long distances with negligible loss, but manufacturing the massive amounts of metallic single walled carbon nanotubes required for the development of this “miracle cable” has proven difficult. Now researchers have made a pivotal breakthrough that could make the development of such a cable possible.  Read More

An enhanced color image of fluorescence from single-walled carbon nanotubes (right) shows ...

Mice are frequently used as lab models when testing new drugs, and fluorescent dyes are sometimes injected into their bodies so that researchers can better see how those drugs are progressing through their systems. Unfortunately, the pictures obtained in this process start to become murky when imaging anything more than a few millimeters beneath the skin. Scientists from Stanford University have now devised a system that utilizes fluorescent carbon nanotubes to produce clear color images of organs that are located centimeters within a mouse's body.  Read More

The M13 virus consists of a strand of DNA (the figure-8 coil on the right) attached to a b...

Last year, researchers from the Massachusetts Institute of Technology (MIT) announced that they had successfully used carbon nanotubes for "funneling" and concentrating electrons in photovoltaic cells – this meant that smaller solar cells created using the nanotubes could produce as much or more electricity than larger conventional cells. Now, the efficiency of these nanotube solar cells is being boosted further ... with the help of a virus.  Read More

Prof. Somenath Mitra has developed a membrane incorporating carbon nanotubes, that could l...

When it comes to desalinating salt water, two of the main options are thermal distillation and reverse osmosis. Thermal distillation involves boiling the water and collecting the resulting freshwater condensation, while reverse osmosis involves pressurizing the salt water and forcing it through a semipermeable membrane, which will allow water molecules to pass through, but not salt. Both of these methods, however, require a considerable amount of energy – not as environmentally sound as they could be, nor entirely practical for use in developing nations, where electricity isn’t readily available. Now, however, a newly-developed membrane that incorporates carbon nanotubes could make desalination much quicker, easier and energy-efficient.  Read More

Professors Cor Koning (left) and Paul van der Schoot (right), with their new transparent c...

With its two chief properties of excellent electrical conductivity and optical transparency, indium tin oxide (ITO) can be found in transparent conductive coatings for displays found in all kinds of products, such as TVs, mobile phones and laptops, and is also used as a transparent electrode in thin-film solar cells. Unfortunately indium is a rare metal and available supplies could run out in as little as ten years. This has prompted researchers to search for alternatives with some success already reported using carbon nanotubes and copper nanowires. The latest ITO replacement material also uses carbon nanotubes, as well as other commonly available materials, and is environmentally friendly.  Read More

This tiny microfluidic device uses carbon nanotubes 30 microns in diameter to separate can...

A cross-discipline project that brings together biomedicine and nano-engineering has led to the development of a dime-sized microfluidic device that can rapidly detect cancer cells in a blood sample. The new device is based on a cancer cell-detector created four years ago by Mehmet Toner, professor of biomedical engineering at Harvard Medical School. In its latest incarnation, carbon nanotubes have been introduced into the design resulting in an eight-fold improvement in the collection of cells.  Read More

Graduate student Brent Carey, positioning a piece of the nanocomposite material for dynami...

If someone does a lot of arm curls at the gym, the typical result is that the bones and muscles in their arms will get stronger. Recently, researchers at Houston’s Rice University inadvertently created a nanocomposite that behaves in the same way. Although the material doesn’t respond to static stress, repeated mechanical stress will cause it to become stiffer.  Read More

Researchers from the University of Illinois have developed a new low-power digital memory ...

Researchers from the Electrical and Computer Engineering Department of the University of Illinois have developed a new low-power digital memory which uses much less power and is faster than other solutions currently available. The breakthrough could give future consumer devices like smartphones and laptops a much longer battery life, but might also benefit equipment used in telecommunications, science or by the military.  Read More

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