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Related Experiment Video

Updated: Jul 2, 2026

The Submerged Printing of Cells onto a Modified Surface Using a Continuous Flow Microspotter
08:29

The Submerged Printing of Cells onto a Modified Surface Using a Continuous Flow Microspotter

Published on: April 22, 2014

High-efficiency microarray printer using fused-silica capillary tube printing pins.

Steve M Clark1, Gregory E Hamilton, Robert A Nordmeyer

  • 1University of California San Francisco, Box 0808, San Francisco, California 94143, USA.

Analytical Chemistry
|September 4, 2008
PubMed
Summary

This study introduces a novel contact printing method for microarrays using specialized capillary tubes and a pressure/vacuum system. This technique enables high-density printing, is robust against environmental changes, and efficiently utilizes small solution volumes.

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Area of Science:

  • Biotechnology
  • Materials Science
  • Analytical Chemistry

Background:

  • Microarray technology is crucial for high-throughput biological and chemical analysis.
  • Existing printing methods face limitations in density, environmental sensitivity, and sample volume efficiency.

Purpose of the Study:

  • To develop an advanced contact printing approach for microarrays.
  • To enhance printing speed, density, and reproducibility while minimizing sample consumption.

Main Methods:

  • Utilized fused-silica capillary tubes with tapered tips as printing pins.
  • Implemented a pressure/vacuum system for precise control of pin loading, printing, and cleaning.
  • Adapted pin length to adjust load capacity for varying experimental needs.

Main Results:

  • Achieved high printing densities exceeding 12,000 spots/cm(2).
  • Enabled printing from 1536-well source plates due to small pin diameter.
  • Demonstrated robustness against environmental factors like humidity.
  • Printed solutions with diverse viscosities and chemical properties.
  • Printed over 2000 spots from a 0.2 microLiter pin load (<100 pL/spot).

Conclusions:

  • The developed contact printing system offers a versatile and efficient solution for high-density microarray fabrication.
  • The method's insensitivity to environmental conditions and high throughput capabilities make it suitable for various applications.
  • The system's efficiency in sample utilization supports the production of numerous replicate arrays.