Abstract: A sensor is provided and includes a substrate, a patterned electrode, and a membrane material. The patterned electrode is deposited on the substrate and has a conductive surface. The membrane material is deposited on the conductive surface of the patterned electrode and not on the planar substrate. The membrane material forms a three-dimensional membrane layer that covers the conductive surface of the patterned electrode.

Abstract: The present invention provides a K+ selective membrane compositions for use with K+ selective sensors. The composition contains the K+ ionophore KI-II, the cation exchanger potassium tetrakis(4-chlorophenyl) borate), the base membrane polymer polyurethane, and the plasticiser dioctyl sebacate. These components are present in the amounts of K+ ionophore (KI-II): 15 wt % (ionophore II); Cation exchanger (CE): 2.25 wt % (potassium tetrakis(4-chlorophenyl) borate); Plasticiser (DOS): 29.5 wt % (Bis(2-ethylhexyl) sebacate); and Polymer (PU): 58 wt % (polyurethane).

Abstract: A sensor is provided and includes a substrate, a patterned electrode, and a membrane material. The patterned electrode is deposited on the substrate and has a conductive surface. The membrane material is deposited on the conductive surface of the patterned electrode and not on the planar substrate. The membrane material forms a three-dimensional membrane layer that covers the conductive surface of the patterned electrode.