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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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Article information


Submitted
10 May 2011
Accepted
11 Jul 2011
First published
29 Jul 2011

Lab Chip, 2011,11, 3365-3368
Article type
Technical Note

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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