Magnetically-actuated blood filter for a CMOS-based nanowire biosensor

We present a novel blood filter device which is actuated by simple magnetic squeezing to layered membranes. The filter gives a good performance in high plasma recovery yield (~25%), nearly-perfect filtering efficiency (~100%), low blood consumption (<;50μl), fast operation (<;1 min.). Performance of the filter was tested for various geometrical and operational parameters. The filter is designed for disposable and versatile usage, and it is applied to a CMOS FET-based nanowire biosensor.