Article

Construction of High- Density Bacterial Colony Arrays and Patterns by the Ink Jet Method

Publication Date

January 2004

Journal/Book Title/Conference

Biotechnol. Bioeng.

Volume

85

Issue

1

Abstract

We have developed a method for fabricating bacterial colony arrays and complex patterns using commercially available ink-jet printers. Bacterial colony arrays with a density of 100 colonies/cm(2) were obtained by directly ejecting Escherichia coli (E. coli) onto agar-coated substrates at a rapid arraying speed of 880 spots per second. Adjusting the concentration of bacterial suspensions allowed single colonies of viable bacteria to be obtained. In addition, complex patterns of viable bacteria as well as bacteria density gradients were constructed using desktop printers controlled by a simple software program.

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