The Search of Cell Positioning in Electrorotation measurements
Electrorotation (ROT) is a wide-used technique to measure the dielectric properties of cells. But the position of the cell in the measurement brings the error for the non-uniform of the ROT torque. In this paper, The Schwarz-Christoffel mapping (SCM) method was used for obtaining the accurate analytical solution of the ROT torque and the dielectrophoretic (DEP) force distribution in the circular electrode structure. A roughly uniform electric field in the near central region of the circular electrode structure for ROT measurement was defined, which the radius is about 36％ of the circular electrode structures radius. The more, we found that before the ROT measurement, an additional conventional negative dielectrophoretic (nDEP) step can assist the cells well positioning. The analysis of the distribution of the DEP force at nDEP step was described in the paper also using SCM method.
Electrorotation(ROT) Schwarz-Christoffel mapping Cell positioning circular electrode
Jun Wang Honghua Liao Jianjun Chen Lei Luo Wenli Zhou Jun Yu
Department of Electronics Science and Technology Huazhong University of Science and Technology Wuhan Hubei,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）