Modulated 3D cross-correlation dynamic light scattering of magnetic nanoparticle inks

Frau, Eleonora (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Schintke, Silvia (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland)

Dynamic light scattering (DLS) is a versatile tool for sizing nanoparticles (NPs) suspended in fluids. In this paper, we apply and discuss modulated 3D cross-correlation DLS and UV-vis-NIR transmittance spectroscopy for the study of commercial iron oxide NP aqueous suspensions (Fe3O4 and Fe2O3, with nominal average size 10 nm and < 30 nm, respectively) motivated by the aim to use them for the formulation of magnetic NP inks. By analyzing the particle size distribution with the LS Instruments’ CONTIN algorithm, we find that the predominant particle sizes in nanoparticle products can strikingly differ from the values that a user would typically expect according to the provided suppliers’ information. We thus highlight that for application fields of magnetic NPs, such as e.g. ink formulations for nanoelectronics, spintronics or printed electronics, and whenever the particle size matters, the purchase and use of NP materials needs detailed product information and investigation of particle size distributions. Our analysis as a function of NP concentration confirm that modulated 3D cross-correlation DLS can efficiently be used even at high NP concentrations (e.g. 1.17 g/mL Fe2O3 load) without further dilution.


Keywords:
Conference Type:
short paper
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
COMATEC - Institut de Conception, Matériaux, Emballage & Conditionnement
Subject(s):
Ingénierie
Publisher:
Bucharest, Romania, 1-5 July 2018
Date:
2018-07
Bucharest, Romania
1-5 July 2018
Pagination:
4 p.
Published in:
Proceedings of the 20th International Conference on Transparent Optical Networks, Bucharest, Romania, 1-5 July 2018
DOI:
ISSN:
2161-2064
ISBN:
978-1-5386-6605-0
External resources:
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2018-10-09, last modified 2018-12-20

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