We report ZnO inverse opal- and nanowire (NW)-based enzymatic glucose biosensors with extended linear detection ranges. The ZnO inverse opal sensors have 0.01–18 mM linear detection range, which is 2.5 times greater than that of ZnO NW sensors and 1.5 times greater than that of other reported ZnO sensors. This larger range is because of reduced glucose diffusivity through the inverse opal geometry. The ZnO inverse opal sensors have an average sensitivity of 22.5 μA/(mM cm2), which diminished by 10% after 35 days, are more stable than ZnO NW sensors whose sensitivity decreased by 10% after 7 days.
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Research Article| June 25 2013
Zinc oxide inverse opal enzymatic biosensor
James H. Pikul;
William P. King;
Xueqiu You, James H. Pikul, William P. King, James J. Pak; Zinc oxide inverse opal enzymatic biosensor. Appl. Phys. Lett. 24 June 2013; 102 (25): 253103. https://doi.org/10.1063/1.4811411
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