Using Scanning-Probe Block Copolymer Lithography and Electron Microscopy to Track Shape Evolution in Multimetallic Nanoclusters

Guoliang Liu, Chuan Zhang, Jinsong Wu, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Here we describe a general method for synthesizing multimetallic core-shell nanoclusters on surfaces. By patterning seeds at predesignated locations using scanning-probe block copolymer lithography, we can track shape evolution in nanoclusters and elucidate their growth pathways using electron microscopy. The growth of core-shell nanostructures on surface-bound seeds is a highly anisotropic process and often results in multimetallic anisotropic nanostructures. The shell grows at specific edge and corner sites of the patterned seeds and propagates predominately from the top hemisphere of the seeds.

Original languageEnglish (US)
Pages (from-to)12137-12145
Number of pages9
JournalACS nano
Volume9
Issue number12
DOIs
StatePublished - Nov 12 2015

Keywords

  • core-shell nanoparticle
  • multimetallic nanocluster
  • scanning-probe block copolymer lithography
  • shape evolution

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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