Abstract
A unique substrate for surface-enhanced Raman scattering on vertical multi-walled carbon nanotube (MWCNT) arrays coated by Au nanoparticles was reported. The vertically aligned MWCNT arrays were prepared by thermal chemical vapor deposition at temperature of 720 °C, and then coated by gold nanoparticles by sputtering. The possible mechanisms for the SERS sensitivity were discussed. Raman spectroscopy experiments for detecting Rhodamine6G were carried on and some obvious Raman peaks were observed and analyzed.
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Acknowledgments
We would like to thank Prof. Liwei Lin and Dr. Yingqi Jiang at University of California at Berkeley for sample fabrication and Prof. Gang Chen at Chongqing University for Raman experimental help. It is funded by National Science Fund of Chongqing Municipal, China (CSTC 2011BB2076), the Fundamental research Funds for the central Universities (CDJZR 10120008) and Visiting Scholar Fund.
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Zhang, J., Chen, Y., Fan, T. et al. Vertically aligned multi-walled CNT arrays coated by gold nanoparticles for surface-enhanced Raman scattering. Microsyst Technol 20, 113–117 (2014). https://doi.org/10.1007/s00542-013-1796-x
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DOI: https://doi.org/10.1007/s00542-013-1796-x