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Issue 126, 2015
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Fabrication of three dimensional layered vertically aligned carbon nanotube structures and their potential applications

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Abstract

This paper proposes a new technique for fabrication of vertically aligned carbon nanotube (VACNT) structures, controlled in shape, height and functionality, through continuous successive growth of VACNT layers by chemical vapour deposition (CVD) combined with patterning strategies. This was achieved by vacuum deposition of additional catalyst material onto the original VACNT “forest” layer. A second forest layer is then observed to grow underneath the first by CVD. It is proposed that the new catalyst material diffuses through the porous nanotube forest to coat the growth substrate underneath. The enhanced height, coating, and vertical alignment of the nanotube forests were verified by electron microscope observation. By repeating this process, aligned nanotube bi-layers and tri-layers were grown, producing a “stack” of nanotube layers. By using a “shadow mask” patterning technique to screen areas of the original forest from catalyst deposition, the growth can be confined to specific areas of the substrate. Potentially, these multilayer nanotube structures would have diverse applications as long composite reinforcements, p–n junctions for electronic devices, or to allow the production of near net shape complex multilayer nanotube structures.

Graphical abstract: Fabrication of three dimensional layered vertically aligned carbon nanotube structures and their potential applications

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Publication details

The article was received on 04 Sep 2015, accepted on 30 Nov 2015 and first published on 01 Dec 2015


Article type: Paper
DOI: 10.1039/C5RA18048A
Citation: RSC Adv., 2015,5, 104458-104466
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    Fabrication of three dimensional layered vertically aligned carbon nanotube structures and their potential applications

    J. D. Beard, K. E. Evans and O. R. Ghita, RSC Adv., 2015, 5, 104458
    DOI: 10.1039/C5RA18048A

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