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Issue 12, 2010
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Instantaneous fabrication of arrays of normally closed, adjustable, and reversible nanochannels by tunnel cracking

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Abstract

A direct fabrication method capable of producing fully-reversible, tunable nanochannel arrays, without the use of a molding step, is described. It is based on tunnel cracking of a readily-prepared brittle layer constrained between elastomeric substrates. The resulting nanochannels have adjustable cross-sections that can be reversibly opened, closed, widened and narrowed merely by applying and removing tensile strains to the substrate. This permits reversible trapping and release of nanoparticles, and easy priming or unclogging of the nanochannels for user-friendly and robust operations. The ease of fabrication and operation required to open and close the nanochannels is superior to previous approaches.

Graphical abstract: Instantaneous fabrication of arrays of normally closed, adjustable, and reversible nanochannels by tunnel cracking

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Publication details

The article was received on 13 Jan 2010, accepted on 10 Mar 2010 and first published on 25 Mar 2010


Article type: Technical Note
DOI: 10.1039/C000863J
Citation: Lab Chip, 2010,10, 1627-1630
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    Instantaneous fabrication of arrays of normally closed, adjustable, and reversible nanochannels by tunnel cracking

    K. L. Mills, D. Huh, S. Takayama and M. D. Thouless, Lab Chip, 2010, 10, 1627
    DOI: 10.1039/C000863J

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