22_25/2010Magnetic Membrane Gating: Single-Pore Membranes Gated by Microelectromagnetic Traps (Adv. Mater. 25/2010)

On p. 2759 Lane Baker and co-workers from Indiana University and Oak Ridge National Laboratory describe electromagnetic micropores for the control of ion transport. Current passed through a single-turn microcoil focuses a magnetic field gradient, creating a trap at a micropore in the center of the coil. Magnetic fluids trapped in the electromagnetic trap can be used to gate the flux of ions through the micropore, in a manner reminiscent of biological ion channels. Further applications in nano-/microscale transport and sensor development are evident.

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