A novel microneedle-based non- enzymatic glucose sensor for painless diabetes testing application

In this work, we report the design, fabrication and in-vitro testing of a novel microneedle-based high sensitivity non-enzymatic glucose sensor for diabetes testing application. It consists of 15 by 15 sharp silicon microneedle array (> 300 µm tall) and multi-walled carbon nanotube (MWCNT) forest electrodes coated with platinum nanoparticle. The Pt nanoparticle coated MWCNT electrodes significantly increase the surface area and in turn enhance the sensitivity. Since microneedle is integrated with nanoparticle surface enhanced electrode-based non-enzymatic glucose sensor, this device has a potential to be used for painless diabetes testing for diabetes mellitus patients.