Capillary force-driven, large-area alignment of multi-segmented nanowires
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Authors
Zhou, Xiaozhu
Zhou, Yu
Ku, Jessie C.
Zhang, Chuan
Mirkin, Chad A.
Subjects
Multi-segmented nanowire
Capillary force
Alignment
On-wire lithography
Graphene nanoribbon
SERS
Capillary force
Alignment
On-wire lithography
Graphene nanoribbon
SERS
Advisors
Date of Issue
2014
Date
Publisher
ACS Publications
Language
Abstract
We report the large-area alignment of multi-segmented nanowires in nanoscale trenches facilitated by capillary forces. Electrochemically synthesized nanowires between 120 and 250 nm in length are aligned and then etched selectively to remove one segment, resulting in arrays of nanowires with precisely controlled gaps varying between 2 and 30 nm. Crucial to this alignment process is the dispersibility of the nanowires in solution which is achieved by chemically modifying them with hexadecyltrimethylammonium bromide. We found that, even without the formation of an ordered crystalline phase at the droplet edges, the nanowires can be aligned in high yield. To illustrate the versatility of this approach as a nanofabrication technique, the aligned nanowires were used for the fabrication of arrays of gapped graphene nanoribbons and SERS substrates.
Type
Article
Description
Article of record as published may be found at http://dx.doi.org/10.1021/nn405627s
Series/Report No
Department
Chemistry
Organization
Northwestern University
Identifiers
NPS Report Number
Sponsors
AFOSR
Office of Naval Research
Funded by OASDRD/NSSEFF via Naval Postgraduate School.
Office of Naval Research
Funded by OASDRD/NSSEFF via Naval Postgraduate School.
Funder
Award nos. FA9550-09-1-0294 and FA9550-12-1-0280 (AFOSR)
Award no. FA2386-13-1-3124 (AOARD)
Award nos. N00244-09-1-0012 and N00244-09-1-0071 (NPS)
Award no. N00014-11-1-0729 (ONR)
Award no. FA2386-13-1-3124 (AOARD)
Award nos. N00244-09-1-0012 and N00244-09-1-0071 (NPS)
Award no. N00014-11-1-0729 (ONR)
Format
6 p.
Citation
X. Zhou, Y. Zhou, J.C. Ku, C. Zhang, C.A. Mirkin, "Capillary force-driven, large-area alignment of multi-segmented nanowires," ACM Nano, v. 8, no.2 (2014) pp. 1511-1516.
Distribution Statement
Rights
Copyright is reserved by the copyright owner.