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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Directed self-assembly of gradient concentric carbon nanotube rings

Cited 50 times inthomson ciCited 47 times inthomson ci
Title
Directed self-assembly of gradient concentric carbon nanotube rings
Author
Hong, Suck WonJeong, WonjeKo, HyunhyubKessler, Michael R.Tsukruk, Vladimir V.Lin, Zhiqun
Keywords
THIN-FILM TRANSISTORS; ALIGNED ARRAYS; LARGE-SCALE; PATTERN-FORMATION; POLYMER-SOLUTION; STRIPE PATTERNS; SINGLE; EVAPORATION; NANOPARTICLES; GROWTH
Issue Date
2008-07
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED FUNCTIONAL MATERIALS, v.18, no.14, pp.2114 - 2122
Abstract
Hundreds of gradient concentric rings of linear conjugated polymer, (poly[2-methoxy-5-(2-ethylhexyloxy)-1,4- phenylenevinylene], i.e., MEH-PPV) with remarkable regularity over large areas were produced by controlled "stick-slip" motions of the contact line in a confined geometry consisting of a sphere on a flat substrate (i.e., sphere-on-flat geometry). Subsequently, MEH-PPV rings were exploited as a template to direct the formation of gradient concentric rings of multiwalled carbon nanotubes (MWNTs) with controlled density. This method is simple, cost effective, and robust, combining two consecutive self-assembly processes, namely, evaporation-induced self-assembly of polymers in a sphere-on-flat geometry, followed by subsequent directed self-assembly of MWNTs on the polymer-templated surfaces.
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DOI
10.1002/adfm.200800135
ISSN
1616-301X
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