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Issue 12, 2017
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Programmable micrometer-sized motor array based on live cells

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Trapping and transporting microorganisms with intrinsic motility are important tasks for biological, physical, and biomedical applications. However, fast swimming speed makes the manipulation of these organisms an inherently challenging task. In this study, we demonstrated that an optoelectrical technique, namely, optically induced dielectrophoresis (ODEP), could effectively trap and manipulate Chlamydomonas reinhardtii (C. reinhardtii) cells swimming at velocities faster than 100 μm s−1. Furthermore, live C. reinhardtii cells trapped by ODEP can form a micrometer-sized motor array. The rotating frequency of the cells ranges from 50 to 120 rpm, which can be reversibly adjusted with a fast response speed by varying the optical intensity. Functional flagella have been demonstrated to play a decisive role in the rotation. The programmable cell array with a rotating motion can be used as a bio-micropump to drive the liquid flow in microfludic chips and may shed new light on bio-actuation.

Graphical abstract: Programmable micrometer-sized motor array based on live cells

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Publication details

The article was received on 05 Jan 2017, accepted on 09 May 2017 and first published on 17 May 2017

Article type: Paper
DOI: 10.1039/C7LC00017K
Citation: Lab Chip, 2017,17, 2046-2053
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    Programmable micrometer-sized motor array based on live cells

    S. Xie, X. Wang, N. Jiao, S. Tung and L. Liu, Lab Chip, 2017, 17, 2046
    DOI: 10.1039/C7LC00017K

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