We demonstrated single-walled carbon nanotube aggregation at electrode edges by local electric field enhancement by a focused laser irradiation. It was revealed that the formation of nanobubbles and their induced fluid motion play an important role in carrying nanotubes to the electric field enhancement region around the laser irradiation spot from the laser power dependence of the aggregation on electrode edges. Furthermore, we found that metallic nanotubes preferentially aggregated near irradiation spots by the investigation of the laser irradiation time dependence of the aggregation. This technique is useful for manipulating and bridging nanotubes between electrodes for device applications.
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