Fig. 2From: Functionalized microneedles for continuous glucose monitoring(Reproduced with permission [66]. Copyright 2018, IEEE)a Cross-sectional fabrication process of the electrodes on the Si MN. b An optical image of the assembled hollow MN and measurement setups. SEM image of the hollow MN is shown on right hand, c A micrograph of the fabricated electrodes on the Si probe, d Amperometric measurement of glucose by the hollow MN-based sensorBack to article page