Distinctive translational and self-rotational motion of lymphoma cells in an optically induced non-rotational alternating current electric field

Biomicrofluidics
Wenfeng LiangWeijing Zhang

Abstract

In this paper, the translational motion and self-rotational behaviors of the Raji cells, a type of B-cell lymphoma cell, in an optically induced, non-rotational, electric field have been characterized by utilizing a digitally programmable and optically activated microfluidics chip with the assistance of an externally applied AC bias potential. The crossover frequency spectrum of the Raji cells was studied by observing the different linear translation responses of these cells to the positive and negative optically induced dielectrophoresis force generated by a projected light pattern. This digitally projected spot served as the virtual electrode to generate an axisymmetric and non-uniform electric field. Then, the membrane capacitance of the Raji cells could be directly measured. Furthermore, Raji cells under this condition also exhibited a self-rotation behavior. The repeatable and controlled self-rotation speeds of the Raji cells to the externally applied frequency and voltage were systematically investigated and characterized via computer-vision algorithms. The self-rotational speed of the Raji cells reached a maximum value at 60 kHz and demonstrated a quadratic relationship with respect to the applied voltage. Furthermore, o...Continue Reading

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Citations

Dec 8, 2017·Journal of the Royal Society, Interface·Ke WangJian Chen
Apr 29, 2021·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·Mei JiangWentao Yue

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