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Science 13 December 1996:
Vol. 274. no. 5294, pp. 1813 - 0
DOI: 10.1126/science.274.5294.1813e
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This Week in Science

The inner cavities of carbon nanotubes could be utilized for the controlled production of encapsulated nanostructures and as small test tubes. However, numerous problems remain, such as the controlled filling of the tubes and the reactivity of the tube walls. Ugarte et al. (p. 1897) studied the filling of nanotubes with a molten silver salt and showed that a minimum tube diameter of about 4 nanometers is required. The decomposition of the silver salt within the tubes to form silver particles leads to high pressures in the tubes and to production of oxidizing gases that erode the tube walls.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)