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Issue 15, 2014
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Marangoni self-propelled capsules in a maze: pollutants ‘sense and act’ in complex channel environments

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Abstract

Environmental remediation is a highly pressing issue in society. Here we demonstrate that autonomous self-propelled millimeter sized capsules can sense the presence of pollutants, mark sites for visible identification and remove the contamination, while navigating in a complex environment of interconnected channels, the maze. Such long-range self-powered capsules propelled by the Marangoni effect are capable of releasing chemicals to alter the pH and induce aggregation during pollutant flocculation at a faster rate than convection or diffusion. These devices are foreseen to have real-world environmental applications in the near future.

Graphical abstract: Marangoni self-propelled capsules in a maze: pollutants ‘sense and act’ in complex channel environments

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Publication details

The article was received on 09 Apr 2014, accepted on 25 Apr 2014 and first published on 06 Jun 2014


Article type: Paper
DOI: 10.1039/C4LC00431K
Citation: Lab Chip, 2014,14, 2818-2823
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    Marangoni self-propelled capsules in a maze: pollutants ‘sense and act’ in complex channel environments

    G. Zhao and M. Pumera, Lab Chip, 2014, 14, 2818
    DOI: 10.1039/C4LC00431K

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