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나노 구조 물리 연구단
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Sorting centimetre-long single-walled carbon nanotubes

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Title
Sorting centimetre-long single-walled carbon nanotubes
Author(s)
Yu W.J.; Sang Hoon Chae; Quoc An Vu; Young Hee Lee
Publication Date
2016-08
Journal
SCIENTIFIC REPORTS, v.6, no., pp.30836 -
Publisher
NATURE PUBLISHING GROUP
Abstract
While several approaches have been developed for sorting metallic (m) or semiconducting (s) single-walled carbon nanotubes (SWCNTs), the length of SWCNTs is limited within a micrometer, which restricts excellent electrical performances of SWCNTs for macro-scale applications. Here, we demonstrate a simple sorting method of centimetre-long aligned m- and s-SWCNTs. Ni particles were selectively and uniformly coated along the 1-cm-long m-SWCNTs by applying positive gate bias during electrochemical deposition with continuous electrolyte injection. To sort s-SWCNTs, the Ni coating was oxidized to form insulator outer for blocking of current flow through inner m-SWCNTs. Sorting of m-SWCNTs were demonstrated by selective etching of s-SWCNTs via oxygen plasma, while the protected m-SWCNTs by Ni coating remained intact. The series of source-drain pairs were patterned along the 1-cm-long sorted SWCNTs, which confirmed high on/off ratio of 104-108 for s-SWCNTs and nearly 1 for m-SWCNTs © The Author(s) 2016
URI
http://pr.ibs.re.kr/handle/8788114/2796
DOI
10.1038/srep30836
ISSN
2045-2322
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
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