Paramagnetic particles give molecules the push
Getting fluid to move along nanochannels isn’t always straightforward and can present a stumbling block when it comes to lab-on-a-chip technology. One way to get around the issue is to use paramagnetic particles, as Paul Heremans of IMEC, Belgium, pointed out in today’s lunchtime symposium.
The paramagnetic beads can be pulled through the stationary fluid by placing microcoils alongside the channel to provide a net magnetic force. Taking this a step further, you could functionalize the movable particles with specific molecules to perform a diagnostic function.
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