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Issue 19, 2011
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Parallel sub-micrometre channels with different dimensions for laser scattering detection

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Abstract

A novel and simple approach for the realization of polymer sub-micrometre channels is introduced by exploiting replica molding of Pt wires deposited by focused ion beam. We fabricate arrays of parallel channels with typical dimensions down to 600 nm and with variable height. We characterize the pressure-driven transport of polymer colloids through the channels in terms of the translocation frequency, amplitude and duration by implementing a laser scattering detection technique. We propose a prototype application of the presented platform such as the in situ sizing and sensing of populations of particles with different dimensions down to 50 nm.

Graphical abstract: Parallel sub-micrometre channels with different dimensions for laser scattering detection

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Publication details

The article was received on 10 May 2011, accepted on 11 Jul 2011 and first published on 29 Jul 2011


Article type: Technical Note
DOI: 10.1039/C1LC20399A
Citation: Lab Chip, 2011,11, 3365-3368
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    Parallel sub-micrometre channels with different dimensions for laser scattering detection

    S. Pagliara, C. Chimerel, R. Langford, D. G. A. L. Aarts and U. F. Keyser, Lab Chip, 2011, 11, 3365
    DOI: 10.1039/C1LC20399A

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