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The nondestructive characterization of biological liquids and cell suspensions using electromagnetic waves in the microwave frequency range calls for accurate and sensitive measurement devices. Especially when reducing the sample volume, the sensitivity becomes a critical design parameter for broadband sensors. In this paper, a miniaturized transmission-line sensor based on a coplanar waveguide is...
A miniaturized transmission-line sensor based on a coplanar waveguide with increased sensitivity is used to characterize living and dead CHO-K1 cells in suspension. The biological samples are guided across the sensor in a microfluidic channel which is fabricated using microsystems technology. The broadband sensor is used between 850MHz and 40 GHz to detect the permittivity of liquid samples. The contrast...
Quasi-lumped structures are used to develop two sensors based on coplanar waveguide transmission lines. The broadband sensors are fabricated using microsystems technology and are used between 1 and 35 GHz. A calibration method to determine the sample permittivity is adapted. The sensors are intended for the non-invasive characterization of biological cells. Saline solutions, water, and an ethanol-water...
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