%0 Journal Article
%T A Low-Cost, Normally Closed, Solenoid Valve for Non-Contact Dispensing in the Sub-¦ÌL Range
%A Stefan Borja Bammesberger
%A Sabrina Kartmann
%A Laurent Tanguy
%A Dong Liang
%A Klaus Mutschler
%A Andreas Ernst
%A Roland Zengerle
%A Peter Koltay
%J Micromachines
%D 2013
%I MDPI AG
%R 10.3390/mi4010009
%X We present a disposable, normally closed, non-contact dispensing valve for the sub-¦ÌL range. The miniaturized solenoid valve (diameter: 8 mm, height: 27.25 mm) is compatible to standard Luer-Lock interfaces. A highly dynamic actuation principle enables opening times down to 1 ms. The dispensing performance was evaluated for water ( ¦Ç = 1.03 mPas) and a 66% (w/w) glycerol/water solution ( ¦Ç = 16.98 mPas), at pressures varying from 200 to 800 mbar. The experimentally determined minimal dispensing volume was 163 nL (CV 1.6%) for water and 123 nL (CV 4.5%) for 66% (w/w) glycerol/water. The low-cost polymer valve enables high precision dispensing of liquid volumes down to the lower end of the sub-¦ÌL range comparable to high-end non-disposable micro-dispensing valves.
%K non-contact dispensing
%K solenoid valve
%K normally closed
%K disposable
%U http://www.mdpi.com/2072-666X/4/1/9