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• W1989442904 abstract "Magnetotactic bacteria (MTB) are capable of swimming along magnetic field lines. This unique feature renders them suitable in the development of magnetic-guided, auto-propelled microrobots to serve in target molecule separation and detection, drug delivery, or target cell screening in a microfluidic chip. The biotechnology to couple these bacteria with functional loads to form microrobots is the critical point in its application. Although an immunoreaction approach to attach functional loads to intact MTB was suggested, details on its realization were hardly mentioned. In the current paper, MTB-microrobots were constructed by attaching 2 μm diameter microbeads to marine magnetotactic ovoid MO-1 cells through immunoreactions. These microrobots were controlled using a special control and tracking system. Experimental results prove that the attachment efficiency can be improved to ∼30% via an immunoreaction. The motility of the bacteria attached with different number of loads was also assessed. The results show that MTB can transport one load at a velocity of ∼21 μm/s and still move and survive for over 30 min. The control and tracking system is fully capable of directing and monitoring the movement of the MTB-microrobots. The rotating magnetic fields can stop the microrobots by trapping them as they swim within a circular field with a controllable size. The system has potential use in chemical analyses and medical diagnoses using biochips as well as in nano/microscale transport." @default.
• W1989442904 created "2016-06-24" @default.
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• W1989442904 date "2012-06-01" @default.
• W1989442904 modified "2023-09-25" @default.
• W1989442904 title "Construction and operation of a microrobot based on magnetotactic bacteria in a microfluidic chip" @default.
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• W1989442904 doi "https://doi.org/10.1063/1.3702444" @default.
• W1989442904 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3360722" @default.
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