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Growth of carbon nanowalls at atmospheric pressure for one-step gas sensor fabrication

Kehan Yu1, Zheng Bo1, Ganhua Lu1, Shun Mao1, Shumao Cui1, Yanwu Zhu2, Xinqi Chen3, Rodney S Ruoff2 and Junhong Chen1*

Author Affiliations

1 Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA

2 Department of Mechanical Engineering and the Texas Materials Institute, University of Texas at Austin, Austin, TX 78712, USA

3 Keck-II Center, Northwestern University, Evanston, IL 60208, USA

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Nanoscale Research Letters 2011, 6:202  doi:10.1186/1556-276X-6-202

Published: 9 March 2011

Additional files

Additional file 1:

CNWs grown on a Cu plate and stainless steel plates; emission spectrum of dc glow discharge. Figure S-1 SEM images of CNWs grown on a Cu plate with different surface density. Figure S-2 (a) SEM image showing no presence of CNWs on a stainless steel plate when CH4 alone is used as the precursor gas. (b) CNWs grown using CH4 and H2O. The growth time for both cases is 5 min. Figure S-3 Emission spectrum of glow discharge obtained by subtracting the background signal (without discharge) from the total spectrum (with discharge). Emission lines of OH are remarkable in the spectrum of a CNW sample.

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