Issue 12, 2012

Simultaneous growth of self-patterned carbon nanotube forests with dual height scales

Abstract

In this study, we report on a unique, one-step fabrication technique enabling the simultaneous synthesis of vertically aligned multi-walled carbon nanotubes (VA-MWCNTs) with dual height scales through alcohol catalyzed chemical vapor deposition (ACCVD). Regions of VA-MWCNTs with different heights were well separated from each other leading to a self-patterning on the surface. We devised a unique layer-by-layer process for application of catalyst and inhibitor precursors on oxidized Si (100) surfaces before the ACCVD step to achieve a hierarchical arrangement. Patterning could be controlled by adjusting the molarity and application sequence of precursors. Contact angle measurements on these self-patterned surfaces indicated that manipulation of these hierarchical arrays resulted in a wide range of hydrophobic behavior changing from that of a sticky rose petal to a lotus leaf.

Graphical abstract: Simultaneous growth of self-patterned carbon nanotube forests with dual height scales

Supplementary files

Article information

Article type
Paper
Submitted
02 Feb 2012
Accepted
17 Apr 2012
First published
20 Apr 2012

Nanoscale, 2012,4, 3746-3753

Simultaneous growth of self-patterned carbon nanotube forests with dual height scales

E. D. Sam, G. Kucukayan-Dogu, B. Baykal, Z. Dalkilic, K. Rana and E. Bengu, Nanoscale, 2012, 4, 3746 DOI: 10.1039/C2NR30258F

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