Sabrina Kartmann

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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%(More)
We present a miniaturized, disposable, normally-closed electromagnetic dispensing valve for the microliter range to process 96-well plates. The novel injection-molded valve is designed to fit into a 9 mm grid to realize an eight channel dispensing head, enabling the serial processing of well plates row-by-row. The presented dispensing valve design(More)
We present (1) a fast and automated method for large scale production of HUVEC spheroids based on the hanging drop method and (2) a novel method for well-controlled lateral deposition of single spheroids by drop-on-demand printing. Large scale spheroid production is achieved via printing 1536 droplets of HUVEC cell suspension having a volume of 1 μl each(More)
We present a miniaturized, disposable dispensing valve for the microliter range, applicable as consumable to process 96-well plates. The new valve design is adapted to fit into a 9 mm grid and derives from the miniaturization study of a previous functional model [1]. The outer diameter of the valve, including actuating coil, was reduced from 16 mm to 8.5 mm(More)
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