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- Title
A Low-Cost, Normally Closed, Solenoid Valve for Non-Contact Dispensing in the Sub-µL Range.
- Authors
Bammesberger, Stefan Borja; Kartmann, Sabrina; Tanguy, Laurent; Dong Liang; Mutschler, Klaus; Ernst, Andreas; Zengerle, Roland; Koltay, Peter
- Abstract
We present a disposable, normally closed, non-contact dispensing valve for the sub-µL 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 (η = 1.03 mPas) and a 66% (w/w) glycerol/water solution (η = 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-µL range comparable to high-end non-disposable micro-dispensing valves.
- Subjects
VALVES; SOLENOIDS; GLYCERIN; WATER; FLUIDS
- Publication
Micromachines, 2013, Vol 4, Issue 1, p9
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi4010009