Assembling Carbon Nanotube Architectures

Dasbach, Michael; Pyschik, Markus; Lehmann, Viktor; Parey, Kristian; Rhinow, Daniel; Reinhardt, Hendrik M.; Hampp, Norbert A.

doi:10.1021/acsnano.0c01606

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Assembling Carbon Nanotube Architectures

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Parey, Kristian
Department of Structural Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Rhinow, Daniel
Department of Chemistry, Philipps- University of Marburg, Marburg, Germany;
Department of Structural Biology, Max Planck Institute of Biophysics, Max Planck Society;

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引用

Dasbach, M., Pyschik, M., Lehmann, V., Parey, K., Rhinow, D., Reinhardt, H. M., & Hampp, N. A. (2020). Assembling Carbon Nanotube Architectures. ACS Nano, 14(7), 8181-8190. doi:10.1021/acsnano.0c01606.

引用: https://hdl.handle.net/21.11116/0000-0006-9C07-3

要旨

Well-defined multiwalled carbon nanotube structures are generated on stainless steel AISI 304 (EN AW 1.4301) by chemical vapor deposition. Pulsed laser-induced dewetting (PLiD) of the surface, by 532 nm nanosecond laser pulses, is utilized for the preparation of metal oxide nanoparticle fields with a defined particle number per area. The reduction of the precursor particles is achieved in an Ar/H2 (10% H2) atmosphere at 750 °C, thereby generating catalytic nanoparticles (c-NPs) for carbon nanotube (CNT) growth. Ethylene is used as a precursor gas for CNT growth. CNT lengths and morphology are directly related to the c-NP aerial density, which is dependent on the number of dewetting cycles during the PLiD process. Within a narrow window of c-NP per area, vertically aligned carbon nanotubes of great lengths are obtained. For more intense laser treatments, three-dimensional dewetting occurs and results in the formation of cauliflower-like structures. The laser process enables the creation of all kinds of CNT morphologies nearby on the microscale.