Abstract
Numerous ·experimental investigations indicate the necessity of negative bias for low-pressure CVD of aligned carbon nanotubes. Based on the experimentally determined electron density in the dual hot filament/DC plasma deposition system the electrical field close to the substrate was calculated. Taking into account the field enhancement in the vicinity of the CNTs the force acting on their tips is determined. The calculated force has been found to exceed the weight of the droplet by four orders of magnitude. The computations have shown only a weak dependence between the electrical forces and the droplet shape.
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