Microwave microfluidic sensor for determination of glucose concentration in water

In this paper, a compact microfluidic biosensor is designed based on a complementary electric-LC resonator coupled with a microstrip line. It is shown that by flowing water-glucose solutions with different concentrations to the sensing area, the resonance property of the resonator is modified. This measurable change in the electromagnetic property is then used to quantify the glucose concentration. A prototype of the designed sensor is fabricated and tested to verify the biosensing concept.