Bacterial adsorption onto thin Fe3O4 magnetic nanofilms

F. Ansari, R. Horváth, A. Aref, J. J. Ramsden

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We have recently found that biodesulfurization activity is enhanced if bacteria are decorated with ferrous nanoparticles. In order to develop this further, we investigated the adhesion of magnetic nanoparticles to the surface of bacteria, by depositing a thin layer of Fe3O4 magnetic nanoparticles onto a Si(Ti)O2 waveguide surface. The kinetics of adsorption of Rhodococcus erythropolis IGTS8 on the fabricated nanofilm was measured under controlled conditions using optical waveguide lightmode spectroscopy (OWLS), with which the number of deposited particles and bacteria could be accurately calculated. We found that it was very difficult to coat optical waveguides with bare magnetite nanoparticles, because of their aggregation. This problem could be solved by precoating the nanoparticles with poly ethylene glycol (PEG). On the other hand, this coating apparently prevented the adhesion of the bacteria to the magnetite.

Original languageEnglish
Title of host publicationTechnical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
Pages91-94
Number of pages4
Volume2
Publication statusPublished - 2008
Event2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008 - Quebec City, QC, United States
Duration: Jun 1 2008Jun 5 2008

Other

Other2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
CountryUnited States
CityQuebec City, QC
Period6/1/086/5/08

Fingerprint

Bacteria
Nanoparticles
Adsorption
Optical waveguides
Adhesion
Magnetite nanoparticles
Magnetite
Polyethylene glycols
Waveguides
Agglomeration
Spectroscopy
Coatings
Kinetics

Keywords

  • Adsorption
  • Bacteria
  • Magnetic nanoparticles
  • Optical waveguide
  • Poly ethylene glycol

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Ansari, F., Horváth, R., Aref, A., & Ramsden, J. J. (2008). Bacterial adsorption onto thin Fe3O4 magnetic nanofilms. In Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008 (Vol. 2, pp. 91-94)

Bacterial adsorption onto thin Fe3O4 magnetic nanofilms. / Ansari, F.; Horváth, R.; Aref, A.; Ramsden, J. J.

Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008. Vol. 2 2008. p. 91-94.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ansari, F, Horváth, R, Aref, A & Ramsden, JJ 2008, Bacterial adsorption onto thin Fe3O4 magnetic nanofilms. in Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008. vol. 2, pp. 91-94, 2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008, Quebec City, QC, United States, 6/1/08.
Ansari F, Horváth R, Aref A, Ramsden JJ. Bacterial adsorption onto thin Fe3O4 magnetic nanofilms. In Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008. Vol. 2. 2008. p. 91-94
Ansari, F. ; Horváth, R. ; Aref, A. ; Ramsden, J. J. / Bacterial adsorption onto thin Fe3O4 magnetic nanofilms. Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008. Vol. 2 2008. pp. 91-94
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