Planar interdigitated dielectric sensor

Details Planar interdigitated dielectric sensor Planar interdigitated dielectric sensor

G - Physics

01

R

324/42

G01R 27/26 (2006.01) G01N 27/22 (2006.01) G01R 31/12 (2006.01)

Patent

CA 2017833

A planar interdigitated dielectric sensor useful for measuring the surface properties of a material is disclosed. The sensor is formed on an insulating substrate. Attached to the surface of the substrate is an excitation and response electrode disposed in an interdigitated pectinate configuration and a resistance temperature device (metallic strip). Filling the space between the electrodes and the metallic strip is an insulating material of known dielectric properties. The upper surface of the electrodes and the metallic strip are generally coplanar with respect to the insulating material between the electrodes thus forming a flat upper surface on the sensor. This flat upper surface serves to eliminate air gaps between the sensor surface and sample when analyzing relatively viscous materials.

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