Nano Archive

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

Xu, C. Shan and Cang, Hu and Montiel, Daniel and Yang, Haw (2007) Rapid and quantitative sizing of nanoparticles using three-dimensional single-particle tracking. JOURNAL OF PHYSICAL CHEMISTRY C, 111 (1). pp. 32-35.

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Official URL: http://dx.doi.org/10.1021/jp0671796

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.

Item Type:Article
Subjects:Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:2684
Deposited By:Anuj Seth
Deposited On:06 Jan 2009 17:38
Last Modified:19 Jan 2009 16:58

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