Rapid and quantitative sizing of nanoparticles using three-dimensional single-particle tracking

C. Shan Xu, Hu Cang, Daniel Montiel, Haw Yang

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

We report the first application of three-dimensional (3D) single-particle tracking (SPT) to hydrodynamic size characterization of gold nanoparticles in water. Nanoparticles undergoing Brownian motion were dynamically locked at the focal point of a microscope objective, one at a time, by rapid counteractive movements of the sample container. The hydrodynamic radius was derived from the recorded trajectory of each individual nanoparticle. The directly measured size and size distribution using 3D-SPT were in agreement with those obtained using the conventional dynamic light scattering (DLS) and using transmission electron microscopy (TEM), respectively.

Original languageEnglish (US)
Pages (from-to)32-35
Number of pages4
JournalJournal of Physical Chemistry C
Volume111
Issue number1
DOIs
StatePublished - Jan 11 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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