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In relation to this article, we declare that there is no conflict of interest.
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Received May 27, 2013
Accepted September 16, 2013
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Fabrication and characterization of silicon nanostructures based on metal-assisted chemical etching

1MicroNano System Research Center, Information Engineering College, Taiyuan University of Technology, Taiyuan, Shanxi, China 2Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan, Shanxi, China
Korean Journal of Chemical Engineering, January 2014, 31(1), 62-67(6), 10.1007/s11814-013-0180-y
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Abstract

We present a facile method to fabricate one-dimensional Si nanostructures based on Ag-induced selective etching of silicon wafers. To obtain evenly distributed Si nanowires (SiNWs), the fabrication parameters have been optimized. As a result, a maximum of average growth rate of 0.15 μm/min could be reached. Then, the fabricated samples were characterized by water contact angle (CA) experiments. As expected, the as-etched silicon samples exhibited a contact angle in the range of 132°-136.5°, whereas a higher contact angle (145°) could be obtained by chemical modification of the SiNWs with octadecyltrichlorosilane (OTS). Additionally, Raman spectra experiments have been carried out on as-prepared nanostructures, showing a typical decreasing from 520.9 cm^(-1) to 512.4 cm^(-1) and an asymmetric broadening, which might be associated with the phonon quantum confinement effect of Si nanostructures.

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