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A novel pressure-driven piezodispenser for nanoliter volumes
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/content/aip/journal/rsi/79/8/10.1063/1.2969658
1.
1.D. R. Meldrum, M. R. Holl, C. H. Fisher, M. S. Saini, S. K. McGuire, T. T. H. Ren, W. Pence, S. E. Moody, D. L. Cunningham, D. A. Donaldson, and P. J. Wiktor, IEEE International Conference on Automation Science and Engineering, 2005.
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Figures

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FIG. 1.

System architecture schematic.

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FIG. 2.

Vial subsystem.

Image of FIG. 3.

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FIG. 3.

Dispense volume vs dispense time. Dispensing DI at , with a sinusoidal piezosignal of and .

Image of FIG. 4.

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FIG. 4.

Frequency effect on dispensed drops. Dispensing at with a frequencies of (left picture) and (right picture).

Tables

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Table I.

Reproducibility of dispenses.

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/content/aip/journal/rsi/79/8/10.1063/1.2969658
2008-08-21
2014-04-25

Abstract

A successful dispensing device has been built for use in biotechnology applications requiring nanoliter volume liquid transfer. Air pressure is used as the primary driving force and is controlled via a high speed miniature solenoid valve as opposed to many existing systems that use a valve in line with constantly pressurized fluid to start and stop the dispensing action. This automated pressure-driven system is used to improve a typical piezodriven microdispenser. The resulting system is much less prone to failures resulting from air entrainment and can dispense much higher viscosity fluids than the microdispenser alone.

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Scitation: A novel pressure-driven piezodispenser for nanoliter volumes
http://aip.metastore.ingenta.com/content/aip/journal/rsi/79/8/10.1063/1.2969658
10.1063/1.2969658
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