[Zurück]

C. Haiden, T. Wopelka, M. Jech, E. Weber, D. Puchberger-Enengl, F. Keplinger, M.J. Vellekoop:
"A microfluidic system for visualisation of individual sub-micron particles by light scattering";
Procedia Engineering, 47 (2012), S. 680 - 683.

We present a novel microfluidic optical chip and corresponding sensor setup for continuous particle detection using light scattering. With the proposed device it is possible to visualise sub-micron and nanometre sized particles in liquid in order to quantify their number without the need for fluorescent labelling. The chip contains a microchannel structured in dry film resist which is crossed by a laser beam so that particles in the flow cross the beam and scatter a portion of the incident light which is recorded at 90° angle. Scattering sub-micron particles appear as clearly visible bright spots of several micrometres in diameter on the video and can individually be counted.

Submicron particle detection; Light scattering; Flow through microfluidic chip; Dry film resist

http://dx.doi.org/10.1016/j.proeng.2012.09.238