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We report here a novel approach for rapid sensing of oxygen in solution. Dissolved oxygen is measured using an ultramicroelectrode array (UMEA) (36 UMEs; 2μm Ø 20μm spacing) fabricated from Pt in an oxide-nitride-oxide insulating layer on glass. The oxygen concentration is determined in the short time measurement mode using the slope of the measured current I as a function of 1/√t (−0.4V applied),...
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