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Photocatalytic Engineering of Single‐Walled Carbon Nanotubes: From Metal‐to‐Semiconductor Conversion to Cutting and Patterning
Author(s) -
Nie Yufeng,
Zhang Liming,
Wu Di,
Chen Yubin,
Zhang Guoming,
Xie Qin,
Liu Zhongfan
Publication year - 2013
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201203066
Subject(s) - carbon nanotube , materials science , photocatalysis , semiconductor , nanotechnology , selectivity , field effect transistor , metal , carbon fibers , transistor , chemical engineering , catalysis , optoelectronics , composite material , organic chemistry , chemistry , metallurgy , physics , quantum mechanics , voltage , composite number , engineering
With a TiO 2 ‐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 I on / I off improvements up to five orders of magnitude.