Where it starts and where it goes? Controlled integration of single-walled carbon nanotubes (SWNTs)
into pre-designed nano-architectures is one of the major challenges to be overcome for extensive
scientific research and technological applications. Various serial assembly techniques have been
proposed and developed. However, they are still a long way from practical applications due to the
drawbacks on reliability, yield and cost. Here we demonstrate a laser-based strategy to achieve
parallel integration of SWNTs into pre-designed nano-architectures through an optically controlled
in situ growth process. Optical driving forces originated from tip-induced optical near-field
enhancement and laser beam polarization were applied in this study to realize the controlled
placement of SWNTs at designated sites following wanted orientations on the nanometer scale.
Parallel integration of SWNT arrays was achieved by adjusting laser beam diameter to cover
interested nano-architectures…

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Towards carbon-nanotube integrated devices: optically controlled parallel integration of
single-walled carbon nanotubes