HTTP:: Experts Learn to Control Carbon Nanotubes
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Carbon nanotubes (CNT) are now among the most heavily researched materials in the world, due to the promise they hold in furthering research in a large number of fields, from computer sciences to medicine. They could also be used in electronic noses (bomb, drug and hazardous-gas detectors), as well as in devices able to record the passing through of a single electron. But one of the main issues plaguing their production processes is the fact that experts have not yet learned how to produce it of the exact length and overall size required for specific applications. Recently, experts at the Case Western Reserve University (CWRU) developed a method of controlling this production aspect. The atomic-level structure of carbon nanotubes, referred to as its chirality, is essential in dictating the final product's size and properties. What the CWRU team managed to accomplish was to devise a way of controlling the chirality using nothing more than various mixes of metals in the CNT !
production process. In their experiments, the researchers looked at various methods of combining the catalysts, and discovered that the key to controlling the size of the tubes laid within. Their finds are detailed in the September 20th online issue of the respected scientific journal Nature Materials. “We have established a link betw...
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