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Controlling orientation of V2O5 nanowires within micropatterns via icrocontact printing combined with the gluing Langmuir-Blodgett technique

Authors
Park, JaehyunShin, GunchulHa, Jeong Sook
Issue Date
1-10월-2008
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v.19, no.39
Indexed
SCIE
SCOPUS
Journal Title
NANOTECHNOLOGY
Volume
19
Number
39
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/122576
DOI
10.1088/0957-4484/19/39/395303
ISSN
0957-4484
Abstract
Previously, we suggested a facile method to transfer dioctadecyldimethylammonium bromide (DODAB)/V2O5 nanowire hybrid patterns onto both hydrophobic and hydrophilic substrates via microcontact printing combined with the Langmuir-Blodgett (LB) technique (Park et al 2007 Nanotechnology 18 405301). Herein, we report on the delicate control of the orientation of V2O5 nanowires within the micropatterns transferred via the gluing LB technique using a patterned polydimethylsilicate (PDMS) stamp. According to the orientation of the PDMS line patterns relative to the air-water interface, the aligned orientation of the nanowires, either parallel or perpendicular to the patterns, could be obtained and attributed to the moving direction of the water menisci formed between the PDMS stamp and water. In particular, addition of a small amount of ethanol in the subphase enhanced the dispersion of the DODAB at the air-water interface as well as the aggregation of V2O5 nanowires, resulting in alignment of the V2O5 nanowires via compression of the hybrid LB film by a barrier. Directional alignment of nanowires has potentially broad applications in the fabrication of aligned nanowire devices.
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공과대학 (화공생명공학과)
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