Low cell concentration detection by Fabry-Pérot resonator with sensitivity enhancement by dielectrophoresis

Aoqun Jian, Yueyuan Wu,Jianlong Ji,Douzhe Li,Yixia Zhang,Xiaoming Xue,Shengbo Sang

Sensors and Actuators A: Physical（2021）

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摘要

•A cell detection system combining cell focusing and refractive index measurement.•Dielectrophoresis technology accumulates particles to the strong light-analyte interaction area in space.•The DEP-FP sensor system has a sensitivity of 0.121 nm/(amo/mL) (2 × 10−7 nm/(cells/mL)) and a resolution of 3.65 × 105 cells/mL.

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关键词

Dielectrophoretic force,Yeast cell concentration,Fabry-Pérot resonator,Refractive index sensing

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