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Yufeng Nie, Liming Zhang, Di Wu, Yubin Chen, Guoming Zhang, Qin Xie and Zhongfan Liu Photocatalytic Engineering of Single-Walled Carbon Nanotubes: From Metal-to-Semiconductor Conversion to Cutting and Patterning Small 9

Article first published online: 12 MAR 2013 | DOI: 10.1002/smll.201203066

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With a TiO2-based photocatalytic approach, both an arbitrary geometry tailoring of single-walled carbon nanotubes (SWCNTs) on various substrates and the conversion of metallic to semiconducting SWCNTs are demonstrated. Taking advantage of the selectivity on the diameter and metallicity of SWCNTs, 100% depletable SWCNT-based field-effect transistors are achieved, with Ion/Ioff improvements up to five orders of magnitude.

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