An Innovative New Planar Evanescent Microwave Sensor for Refractive Index Measurement

<p>‘Seed corn funding’ for innovative technologies from the Plymouth University Innovation team has led todevelopment of a new patented planar evanescent microwave sensor with an internally fabricated recessedcavity for use with liquid samples in a range of potential aqueous applications, such as refractive index sensing.Here we present microwave transmission results for a series of polar and non-polar fluids inserted into theinternal cavity of a microwave channel waveguide, and investigate the recess sensing response.</p>