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Related Experiment Videos

Micromachined pipette arrays.

I Papautsky1, J Brazzle, H Swerdlow

  • 1Department of Electrical and Computer Engineering and Computer Science, University of Cincinnati, OH 45221, USA. ian.papautsky@uc.edu

IEEE Transactions on Bio-Medical Engineering
|June 2, 2000
PubMed
Summary

Batch fabricated metallic micromachined pipette arrays (MPA) enable precise submicroliter liquid handling. These novel arrays offer advantages for high-throughput biochemical analysis and gel electrophoresis.

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Area of Science:

  • Materials Science
  • Microfabrication
  • Biotechnology

Background:

  • Micropipette technology faces limitations in precision and throughput.
  • Microscale biochemical analysis systems require compatible sample manipulation tools.

Purpose of the Study:

  • To design and characterize batch-fabricated metallic micromachined pipette arrays (MPA).
  • To evaluate the application of MPA in high lane density slab gel electrophoresis.

Main Methods:

  • Fabrication involved p+ etch-stop membrane technology, anisotropic silicon etching, sacrificial photoresist micromolding, and electrodeposition.
  • Nickel was used as the structural material, with palladium coating for biocompatibility.
  • MPA with varying dimensions and center-to-center spacing were produced.

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Main Results:

  • MPA allow precise submicroliter sample transfer and highly-parallel manipulation.
  • MPA are compatible with microscale biochemical analysis systems.
  • Application in gel electrophoresis demonstrated improved separation efficiency and lane density.

Conclusions:

  • Batch-fabricated metallic MPA offer significant advantages over conventional micropipette technology.
  • MPA are a promising tool for advancing high-throughput microscale biochemical analyses.
  • The technology enables enhanced performance in applications like gel electrophoresis.