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Issue 11, 2011
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Two-dimensional optical feedback control of Euglena confined in closed-type microfluidic channels

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Abstract

We examined two-dimensional (2D) optical feedback control of phototaxis flagellate Euglenacells confined in closed-type microfluidic channels (microaquariums), and demonstrated that the 2D optical feedback enables the control of the density and position of Euglenacells in microaquariums externally, flexibly, and dynamically. Using three types of feedback algorithms, the density of Euglenacells in a specified area can be controlled arbitrarily and dynamically, and more than 70% of the cells can be concentrated into a specified area. Separation of photo-sensitive/insensitive Euglenacells was also demonstrated. Moreover, Euglena-based neuro-computing has been achieved, where 16 imaginary neurons were defined as Euglena-activity levels in 16 individual areas in microaquariums. The study proves that 2D optical feedback control of photoreactive flagellate microbes is promising for microbial biology studies as well as applications such as microbe-based particle transportation in microfluidic channels or separation of photo-sensitive/insensitive microbes.

Graphical abstract: Two-dimensional optical feedback control of Euglena confined in closed-type microfluidic channels

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Publication details

The article was received on 22 Dec 2010, accepted on 15 Mar 2011 and first published on 14 Apr 2011


Article type: Paper
DOI: 10.1039/C0LC00719F
Citation: Lab Chip, 2011,11, 1933-1940
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    Two-dimensional optical feedback control of Euglena confined in closed-type microfluidic channels

    K. Ozasa, J. Lee, S. Song, M. Hara and M. Maeda, Lab Chip, 2011, 11, 1933
    DOI: 10.1039/C0LC00719F

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