We proposed and used magnetic domain walls as easily moveable (by means of remote weak magnetic fields) traps for magnetic nano- and micro-particles. We designed magnetic domain wall conduits, following the guidelines of our own micro-magnetic simulations, and fabricated them by means of electron beam lithography. With these structures, we then demonstrated the actual transport of magnetic particles in liquids with nm-scale precision, solely by means of an externally applied magnetic field, which allowed for remote on-chip operation. More recently, we have developed a process to transfer and integrate our domain wall conduits directly in microfluidic channels defined on a chip.

Manipulation of magnetic particles in conduits for the propagation of domain walls

VAVASSORI, Paolo;
2011

Abstract

We proposed and used magnetic domain walls as easily moveable (by means of remote weak magnetic fields) traps for magnetic nano- and micro-particles. We designed magnetic domain wall conduits, following the guidelines of our own micro-magnetic simulations, and fabricated them by means of electron beam lithography. With these structures, we then demonstrated the actual transport of magnetic particles in liquids with nm-scale precision, solely by means of an externally applied magnetic field, which allowed for remote on-chip operation. More recently, we have developed a process to transfer and integrate our domain wall conduits directly in microfluidic channels defined on a chip.
2011
Magnetic nanostructures; Domain walls conduits; Magnetic nanoparticles manipulation; Lab-on-chip applications; Biomedical applications
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1722137
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