Polydimethylsiloxane films doped with NdFeB powder: magnetic characterization and potential applications in biomedical engineering and microrobotics

This work reports the fabrication, magnetic characterization and controlled navigation of film-shaped microrobots consisting of a polydimethylsiloxane-NdFeB powder composite material. The fabrication process relies on spin-coating deposition, powder orientation and permanent magnetization. Films wit...

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Bibliographic Details
Published in:Biomedical microdevices 2015-12, Vol.17 (6), p.112-7, Article 112
Main Authors: Iacovacci, V., Lucarini, G., Innocenti, C., Comisso, N., Dario, P., Ricotti, L., Menciassi, A.
Format: Article
Language:English
Subjects:
Biocompatible Materials - chemistry
Biological and Medical Physics
Biomedical Engineering
Biomedical Engineering and Bioengineering
Biomedical materials
Biophysics
Cell Line, Tumor
Composite materials
Deposition
Dimethylpolysiloxanes - chemistry
Engineering
Engineering Fluid Dynamics
Humans
Magnetic fields
Magnetic properties
Magnetics
Magnetization
Magnets - chemistry
Microbiology
Microrobots
Microtechnology
Nanotechnology
Navigation
Platforms
Powder metallurgy
Thin films
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Summary:This work reports the fabrication, magnetic characterization and controlled navigation of film-shaped microrobots consisting of a polydimethylsiloxane-NdFeB powder composite material. The fabrication process relies on spin-coating deposition, powder orientation and permanent magnetization. Films with different powder concentrations (10 %, 30 %, 50 % and 70 % w / w ) were fabricated and characterized in terms of magnetic properties and magnetic navigation performances (by exploiting an electromagnet-based platform). Standardized data are provided, thus enabling the exploitation of these composite materials in a wide range of applications, from MEMS/microrobot development to biomedical systems. Finally, the possibility to microfabricate free-standing polymeric structures and the biocompatibility of the proposed composite materials is demonstrated.
ISSN:1387-2176
1572-8781
DOI:10.1007/s10544-015-0024-0