Nano Archive

Electrically tunable solid-state silicon nanopore ion filter

Vidal, Julien and Gracheva, Maria E. and Leburton, Jean-Pierre (2007) Electrically tunable solid-state silicon nanopore ion filter. NANOSCALE RESEARCH LETTERS, 2 (2). pp. 61-68.

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We show that a nanopore in a silicon membrane connected to a voltage source can be used as an electrically tunable ion filter. By applying a voltage between the heavily doped semiconductor and the electrolyte, it is possible to invert the ion population inside the nanopore and vary the conductance for both cations and anions in order to achieve selective conduction of ions even in the presence of significant surface charges in the membrane. Our model based on the solution of the Poisson equation and linear transport theory indicates that in narrow nanopores substantial gain can be achieved by controlling electrically the width of the charge double layer.

Item Type:Article
Uncontrolled Keywords:ion channels; artificial nanopore; silicon materials; nanofluidics
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanochemistry
ID Code:6234
Deposited By:IoN
Deposited On:21 Sep 2009 12:02
Last Modified:21 Sep 2009 12:02

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