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Issue 36, 2016
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Bio-syncretic tweezers actuated by microorganisms: modeling and analysis

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Abstract

Advancements in micro-/nano-technology have led to the development of micro-manipulators. However, some challenges remain; for instance, the efficiency, precision and flexibility of micro-manipulators restrain their applications. This paper proposes a bio-tweezer system to flexibly manipulate micro-objects with bio-actuation via local light-induced high-concentration microorganisms in two different manipulation modes: light-spot induced mode and geometric shape-induced mode. Depending on the shape of micro-objects, either 2-dimensional translation or 1-dimensional rotation can be achieved. Based on the Langevin equation, a mathematical model considering both hydrodynamics and mimicked Brownian motion is proposed to analyze the bio-manipulation performance of the microorganisms; the model was validated by experiments to translate micro-particles in a two-dimensional plane and to rotate a micro-gear structure around its axis. This paper will aid in the development of micro-manipulators and the quantitative understanding of micro-/nano-manipulation actuated by microorganisms.

Graphical abstract: Bio-syncretic tweezers actuated by microorganisms: modeling and analysis

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Publication details

The article was received on 06 May 2016, accepted on 11 Jul 2016 and first published on 11 Jul 2016


Article type: Paper
DOI: 10.1039/C6SM01055E
Citation: Soft Matter, 2016,12, 7485-7494

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    Bio-syncretic tweezers actuated by microorganisms: modeling and analysis

    C. Zhang, S. X. Xie, W. X. Wang, N. Xi, Y. C. Wang and L. Q. Liu, Soft Matter, 2016, 12, 7485
    DOI: 10.1039/C6SM01055E

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