Photon Correlation Spectroscopy in Particle Sizing

Tscharnuter, W.

doi:10.1002/9780470027318.a1512

Cited by 48 publications

(38 citation statements)

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“…By placing a detector at a certain angle and recording the scattered light intensity a time series is recorded. As proved in [32,33] the width of the autocorrelation function of the time series is proportional to the diffusion coefficient, which, on its turn, depends of the particle diameter. This leads to a fast procedure for measuring the particle diameter.…”

Section: The Dynamic Light Scattering Technique (Dls)mentioning

confidence: 94%

Revealing Magnetite Nanoparticles Aggregation Dynamics – A SLS and DLS Study

Chicea

2010

Engineering Materials

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Fe 3 O 4 nanoparticles in aqueous suspensions are not stable but aggregate, tremendously changing the rheological properties of the nanofluid. Modified version of both the Static Light Scattering (SLS) setup and of Dynamic Light Scattering (DLS) setup experiment were used to monitor Fe 3 O 4 nanoparticle aggregation in aqueous diluted suspension. The experiments are described in detail and the variation of the average aggregate diameter in time is presented in this work.

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Section: The Dynamic Light Scattering Technique (Dls)mentioning

confidence: 94%

Revealing Magnetite Nanoparticles Aggregation Dynamics – A SLS and DLS Study

Chicea

2010

Engineering Materials

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“…The basic principle of the method is to analyze intensity fluctuations of light scattered by particles in a state of random Brownian motion [16][17][18][19]. From fluctuation analysis results, we evaluated the diffusion coefficient and then, using the Stokes-Einstein formula, calcu lated the hydrodynamic size of the particles, that is, the size of the particles together with their sol vation shell.…”

Section: Methodsmentioning

confidence: 99%

Size and zeta potential of CdS nanoparticles in stable aqueous solution of EDTA and NaCl

Kuznetsova

Rempel

2015

Inorg Mater

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We have studied the effect of disodium EDTA concentration on the size and zeta potential of CdS nanoparticles in a stable aqueous solution. Measurement results demonstrate that the colloidal solution remains stable at initial Cd 2+ and S 2concentrations of 8 mM and initial EDTA concentrations in the range 3.2 to 16 mM. The reactant mixing sequence is shown to influence the ionic state of EDTA in solution, which in turn influences the stabilization mechanism of the CdS nanoparticles. At pH 3, we observe the formation of protonated chelates such as [CdHY] -, which may form a [-S-Cd-EDTA] ternary complex with the sur face of a nanoparticle, thereby ensuring stability of the colloidal solution at a twofold excess of EDTA. Anal ysis of the nanoparticle size distribution evaluated by dynamic light scattering measurements indicates that the minimum hydrodynamic diameter of the nanoparticles is 10 ± 3 nm. The corresponding zeta potential is about -20 mV.

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“…A comprehensive description of the principles of photon correlation spectroscopy (PCS) can be found in the literature (Ford, 1985;Schurtenberger and Newman, 1993;Tscharnuter, 2000). The photomultiplier recordings of the PCS device serve as input for the calculation of the autocorrelation function, C(s), of the scattering light intensity fluctuations.…”

Section: Light Scatteringmentioning

confidence: 99%