Referenced in: none

Automatically associated channels: Slo1

Title: Parallel sub-micrometre channels with different dimensions for laser scattering detection.

Authors: Stefano Pagliara, Catalin Chimerel, Richard Langford, Dirk G A L Aarts, Ulrich F Keyser

Journal, date & volume: , 2011 Jul 29 , ,

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/21804971

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.