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Fabrication of Superstrong Ultrathin Free‐Standing Single‐Walled Carbon Nanotube Films via a Wet Process
Author(s) -
Shi Zhun,
Chen Xinjiang,
Wang Xuewen,
Zhang Ting,
Jin Jian
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201101298
Subject(s) - materials science , carbon nanotube , nanometre , fabrication , nanotechnology , electrode , capacitive sensing , sheet resistance , ultimate tensile strength , composite material , nanoscopic scale , layer (electronics) , electrical engineering , medicine , alternative medicine , pathology , chemistry , engineering
A one‐pot and readily practical approach is described for the preparation of superstrong, ultrathin, free‐standing single‐walled carbon nanotube (SWNT) films. The SWNT films, with controlled thicknesses of tens to hundreds of nanometers, are prepared from commonly commercialized SWNTs via a wet process. The SWNTs could be easily transferred onto any substrates after self‐releasing from filter membranes without further treatment. The obtained films exhibit excellent performances with sheet resistance of 223 Ω sq −1 and a transparency of 90% at 550 nm was obtained. Most important is that the as‐prepared free‐standing SWNT ultrathin films showed extremely high tensile strength up to 850 MPa for only about a 20‐nm thick film, which has great significance for practical applications, for example, as flexible electrode materials. The SWNT film is used to construct a capacitive touch‐screen prototype, which has a highly sensitive and quick signal touch response.