Single-particle colloid tracking in four dimensions

Stephen M. Anthony, Liang Hong, Minsu Kim, Steve Granick

Research output: Contribution to journalArticlepeer-review

Abstract

Coating a close-packed fluorescent colloid monolayer with a nanometer-thick metal film followed by sonication in liquid produces modulated optical nanoprobes. The metal coating modulates the fluorescence as these structures rotate in suspension, enabling the use of these particles as probes to monitor both rotational and center-of-mass (translational) dynamics in complex environments. Here, we demonstrate methods to simultaneously measure two translational and two rotational degrees of freedom, with excellent agreement to theory. The capability to determine two angles of rotation opens several new avenues of future research.

Original languageEnglish (US)
Pages (from-to)9812-9815
Number of pages4
JournalLangmuir
Volume22
Issue number24
DOIs
StatePublished - Nov 21 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Fingerprint Dive into the research topics of 'Single-particle colloid tracking in four dimensions'. Together they form a unique fingerprint.

Cite this