Integrated lab-on-chip biosensing systems based on magnetic particle actuation : a comprehensive review

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Abstract

The demand for easy to use and cost effective medical technologies inspires scientists to develop inno-vative lab-on-chip technologies for in-vitro diagnostic testing. To fulfill the medical needs, the tests should be rapid, sensitive, quantitative, miniaturizable, and need to integrate all steps from sample-in to result-out. Here, we review the use of magnetic particles actuated by magnetic fields to perform the different process steps that are required for integrated lab-on-chip diagnostic assays. We discuss the use of magnetic particles to mix fluids, to capture specific analytes, to concentrate analytes, to transfer analytes from one solution to another, to label analytes, to perform stringency and washing steps, and to probe biophysical properties of the analytes, distinguishing methodologies with fluid flow and without fluid flow (stationary microfluidics). Our review focuses on efforts to combine and integrate different magnetically actuated assay steps, with the vision that it will become possible in the future to realize integrated lab-on-chip biosensing assays in which all assay process steps are controlled and optimized by magnetic forces.
Original languageEnglish
Pages (from-to)1966-1986
JournalLab on a Chip
Volume2014
Issue number12
DOIs
Publication statusPublished - 2014

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