Title :
Characterization of Nanoparticle Based on the Power Spectrum Density of Dynamic Light Scattering
Author :
Guobin, Liu ; Hui, Yang ; Gang, Zheng ; Yajing, Wang ; Yifeng, Yang
Author_Institution :
Univ. of Shanghai for Sci. & Technol., Shanghai, China
Abstract :
We describe a new measurement suitable for processing dynamic light scattering data of nanoparticles in dispersion. The program by the Power Spectrum Density of the scattering light developed in VC++6.0 using a standard photon counting unit, a fast counting board and a PC is presented. The pulses from PMT are counted by Counting Board at a designed sample time. Then the Power Spectrum Density is calculated and the particles´ size is deduced with characteristic decay constant. The method is systematically tested using small polystyrene latex particles with a wide range of particle concentrations as well as different diameters in suspension.
Keywords :
light scattering; nanoparticles; polymers; VC++6.0; characteristic decay constant; dynamic light scattering; nanoparticle; particle concentrations; particles size; polystyrene latex particles; power spectrum density; standard photon counting unit; suspension; Atmospheric measurements; Correlation; Light scattering; Particle measurements; Photonics; Power measurement; Counting Board; Dynamic Light Scattering; Nanoparticle Sizing; Power Spectrum Density;
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on
Conference_Location :
Shangshai
Print_ISBN :
978-1-4244-9010-3
DOI :
10.1109/ICMTMA.2011.178
