Rotation in suspension of a rod-shaped colloid

Liang Hong, Stephen M. Anthony, Steve Granick

Research output: Contribution to journalArticlepeer-review


The simple strategy of coating a closely packed colloid monolayer with a nanometer-thick metal film to connect colloidal spheres and then gently sonicating produces a series of colloid metastructures, including rods and planar sheets. These structures can be fluorescently labeled, which can serve as a probe to monitor their dynamics in complex environments. The metal coating modulates fluorescence emission as these structures rotate in suspension. By analyzing the time sequence of fluorescence images using single-particle tracking techniques, here we measure the rotational dynamics of a rodlike tetramer, quantifying rotation along the long axis.

Original languageEnglish (US)
Pages (from-to)7128-7131
Number of pages4
Issue number17
StatePublished - Aug 15 2006

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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