Oxygen-Rich Enzyme Biosensor Based on Superhydrophobic Electrode

he fabrication of novel superhydrophobic electrodes is described. These have an air-liquid-solid three-phase interface, where oxygen is sufficient and constant. Oxygen is an effective natural electron acceptor for oxidase, and plays a key role in the development of reliable bioassays. Such an electrode allows detection of glucose concentration, linearly from 50 x 10(-9) M to 156 x 10(-3) M with good sensitivity and accuracy without analyte dilution. This strategy offers a unique route to address the gas-deficit problem of many reaction systems.