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We present an optomagnetic tweezers technique that utilizes the highly localized magnetic field gradients generated near the tip of a magnetic nanowire to provide strong trapping forces on magnetic nanoparticles with high spatial resolution. Integral to the approach is a method to trap, translate, and rotate a single magnetic nanowire in three dimensions; this nanowire is in turn capable of exerting...
We present a novel magnetic manipulation mechanism capable of producing two-dimensional, dynamic magnetic trapping using electric field addressed free-suspending ferrofluidic droplets. This is realized by coupling a permanent magnet with a ferrofluidic droplet that induces a highly non-uniform magnetic field for manipulating other magnetic particles. By implementing an electrode design, we use electrostatic...
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