Fast nanoparticle sizing by image dynamic light scattering--颗粒学报PARTICUOLOGY

Xu, C., Cai, X., Zhang, J., & Liu, L. (2015). Fast nanoparticle sizing by image dynamic light scattering. Particuology, 19, 82–85. https://doi.org/10.1016/j.partic.2014.04.014

Fast nanoparticle sizing by image dynamic light scattering

Chengze Xu, Xiaoshu Cai^*, Jie Zhang, Lili Liu

Institute of Particle and Two-Phase Flow Measurement, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China

10.1016/j.partic.2014.04.014

Volume 19, April 2015, Pages 82-85

Received 16 December 2013, Revised 24 March 2014, Accepted 2 April 2014, Available online 19 August 2014.

E-mail: usst_caixs@163.com

Highlights

• Image dynamic light scattering (IDLS) method was introduced for nanoparticle sizing.

• Real-time acquisition was achieved with a CCD camera.

• Standard latex spheres were tested to verify the feasibility of IDLS method.

• Temperature control unit was not essential in short acquisition time of milliseconds.

• Use of a dispersion medium with high viscosity was recommended.

Abstract

In this paper, an image dynamic light scattering method for nanoparticle sizing is introduced. The spatial distribution of the scattered lights from nanoparticles undergoing Brownian motion was captured at a high frame rate by a digital camera within one second, which is considerably faster than the conventional photon correlation spectroscopy method. The captured series of photographs were meshed into thousands of small units for calculating the intensity autocorrelation functions in parallel. Experimental results from the measurements of three reference nanoparticle samples (27, 80, and 352 nm in diameters) demonstrated the feasibility of this method.

Graphical abstract

Keywords

Nanoparticle sizingImage dynamic light scattering; Real-time acquisition; Brownian motion

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