Abstract
Abstract In this paper, actuation properties of carbon nanotubes are discussed. Samples of freestanding nanotubes on nanostructured metallic blocks have been prepared. Using a conducting AFM tip, electrons can be injected into the nanotubes. As a consequence, the nanotube expands in a similar way as buckypaper does in an electrolyte. From experimental data, the relative length change is estimated to be less than 1%. These findings are taken as a demonstration of an electromechanical actuator based on individual single walled carbon nanotubes.
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