Measuring the Force Gradient Acting on a Magnetic Microsphere above a Micro-Magnet Array - Université de Limoges Accéder directement au contenu
Article Dans Une Revue Advanced Materials Research Année : 2013

Measuring the Force Gradient Acting on a Magnetic Microsphere above a Micro-Magnet Array

Svetlana Ponomareva
  • Fonction : Auteur
  • PersonId : 770774
  • IdRef : 223987972
Nora Dempsey
Dominique Givord
  • Fonction : Auteur
  • PersonId : 916228
Florence Marchi
  • Fonction : Auteur
  • PersonId : 952901

Résumé

The attractive action exerted by an array of micro-magnets on a single polystyrene microsphere containing superparamagnetic iron oxide nanoparticles, the microsphere constituting a model for cells functionalised with such nanoparticles, have been studied in air by using magnetic force microscopy. For this purpose, the method of gluing a magnetic microsphere to an AFM tip has been developed. Using this custom-made colloidal probe, the regions of the micro-magnet array that act as magnetic traps for the magnetic microsphere have been localized and the long-range trap-sphere interactions have been recorded, measured and compared with simulations.
Fichier non déposé

Dates et versions

hal-00946218 , version 1 (13-02-2014)

Identifiants

Citer

Svetlana Ponomareva, Luiz-Fernando Zanini, Frédéric Dumas-Bouchiat, Nora Dempsey, Dominique Givord, et al.. Measuring the Force Gradient Acting on a Magnetic Microsphere above a Micro-Magnet Array. Advanced Materials Research, 2013, 872, pp.167-173. ⟨10.4028/www.scientific.net/AMR.872.167⟩. ⟨hal-00946218⟩
119 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More