Template-assisted formation of gradient concentric gold rings

Suck Won Hong, Jun Xu, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Gradient concentric rings of polymers, including (poly[2-methoxy-5-(2- ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly(methyl methacrylate) (PMMA), with unprecedented regularity were formed by repeated "stick-slip" motion of the contact line in a sphere-on-flat geometry. Subsequently, polymer rings served as templates to direct the formation of concentric Au rings. Three methods were described. The first two methods made use of either UV (i.e., on MEH-PPV) or thermal treatment (i.e., on PMMA) on Au-sputtered polymer rings, followed by ultrasonication. The last method, however, was much more simple and robust, involving selective removal of Au and polymer (i.e., PMMA) consecutively.

Original languageEnglish
Pages (from-to)2949-2954
Number of pages6
JournalNano Letters
Volume6
Issue number12
DOIs
StatePublished - Dec 2006

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