Semiconducting Metal Junction
A semiconducting metal junction formed from two carbon nanotubes.
A team led by Vincent Crespi, associate professor of physics, has simulated carbon nanotubes that are smaller and stronger than any other nanotube. Using supercomputers in California, Michigan and Texas to model the electronic states and total energies of various carbon molecules, Crespi and his colleagues discovered a tetrahedral carbon atom that creates tight and stable bonds to form tiny tubes only six atoms across, the smallest diameter theoretically possible. Crespi believes they may prove very useful in nanotechnology applications.
This work was supported under National Science Foundation grant DMR 95-20554. (Year of image: 1996) [One of several related images. See Next Image.]
Credit: Vin Crespi, Pennsylvania State Physics. Distributed under the Creative Commons license http://creativecommons.org/licenses/by-sa/2.0/.
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