Journal of Nanoparticle Research

, Volume 13, Issue 1, pp 193–198 | Cite as

Particle speciation during PEG–Fe3O4 hybrid nanoparticle self-assembly on Si(Ti)O2

  • Farahnaz Ansari
  • Masoud Kavosh
  • Robert Horvath
  • Jeremy J. Ramsden
Research Paper


The kinetics of assembly of polyethylene glycol (PEG)-coated superparamagnetic Fe3O4 nanoparticles in aqueous suspension on planar Si(Ti)O2 surfaces have been determined using high-resolution optical waveguide lightmode spectroscopy (OWLS). Analysis of the results revealed that the initially uniform population was spontaneously transformed into two types of particles with significantly different adsorption behaviour.


Optical waveguide lightmode spectroscopy Magnetite Adsorption Desorption Programmed self-assembly Nanofilm 



This work was supported by the Hungarian Scientific Research Fund (OTKA PD 73084) and by the European Commission (OPTIBIO 231055).


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Farahnaz Ansari
    • 1
  • Masoud Kavosh
    • 2
  • Robert Horvath
    • 1
    • 3
  • Jeremy J. Ramsden
    • 1
  1. 1.Microsystems and Nanotechnology CentreCranfield UniversityBedfordshireUK
  2. 2.Energy Technology CentreCranfield UniversityBedfordshireUK
  3. 3.Research Institute for Technical Physics and Materials Science (MTA-MFA)BudapestHungary

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