Journal article
Mobility and settling rate of agglomerates of polydisperse nanoparticles
A Spyrogianni, KS Karadima, E Goudeli, VG Mavrantzas, SE Pratsinis
Journal of Chemical Physics | AIP Publishing | Published : 2018
DOI: 10.1063/1.5012037
Abstract
Agglomerate settling impacts nanotoxicology and nanomedicine as well as the stability of engineered nanofluids. Here, the mobility of nanostructured fractal-like SiO2 agglomerates in water is investigated and their settling rate in infinitely dilute suspensions is calculated by a Brownian dynamics algorithm tracking the agglomerate translational and rotational motion. The corresponding friction matrices are obtained using the HYDRO++ algorithm [J. G. de la Torre, G. del Rio Echenique, and A. Ortega, J. Phys. Chem. B 111, 955 (2007)] from the Kirkwood-Riseman theory accounting for hydrodynamic interactions of primary particles (PPs) through the Rotne-Prager-Yamakawa tensor, properly modified ..
View full abstractGrants
Awarded by European Commission
Funding Acknowledgements
We thank Dr. Pavlos S. Stephanou (University of Cyprus) for a constructive collaboration in the early stage of this project. K.S.K. thanks Professor Dr. Wim J. Briels (University of Twente) and his collaborators for stimulating discussions. Financial support from the Swiss National Science Foundation (Grant No. 200020-146176) and the European Research Council under the European Union's Seventh Framework Program (No. FP7/2007-2013, ERC Grant Agreement No. 247283) is kindly acknowledged. V.G.M. and K.S.K. acknowledge financial support from the project "Aristeia I" (Project: Genesis, No. D655/1942) that was implemented under the National Strategic Reference Framework (NSRF) 2007-2013 (Greece): Operational Programme "Education and Lifelong Learning" and was co-funded by the European Union (European Social Fund) and the Greek State (Ministry of Education and Religious Affairs-Greek General Secretariat for Research and Technology). A.S. acknowledges the Onassis Foundation for a graduate student scholarship (No. F ZI 069-1/2012-2013). The work was supported by computational time granted from the Greek Research and Technology Network (GRNET) in the National HPC facility-ARIS-under project name AtmoStruc (No. pr004005).