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Evaluating Error Influences of a Dielectric Waveguide for mm-Wave In Vitro Epithelial Cell Vitality Measurements

A novel measurement setup for contact-free live monitoring of cell vitality using a G-band dielectric waveguide (DWG) from 140 GHz to 220 GHz is introduced. Static and time-variant error influences caused by temperature expansion and water evaporation are investigated, modeled, and compensated. The resulting measured scattering parameters allow the observation of small changes within the signal reflected by the cell suspension. Through using UV-C radiation, the cells can be influenced within the setup. Finally, an exemplary measurement on yeast cells is presented, which demonstrates the capability of the DWG for contact-free measurements.