Facile fabrication of NiO wrinkle micro/nanostructures and the application of enzyme-free glucose sensors

Abstract

Enzyme-free glucose sensors are of great significance for monitoring patients' blood glucose, but the fabrication of high performance sensors is still challenging. In this study, we have fabricated NiO wrinkle micro/nanostructures through UV/Ozone treatment of uncured PDMS and then sputtering of NiO/Cu films. The obtained NiO wrinkle structures were demonstrated as flexible enzyme-free glucose sensors and the performances have been evaluated. The glucose sensor shows good electrochemical performance, and the sensitivity is about 655.8 μA·mmol <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> ·cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> . The proposed strategy of integration of active materials on flexible wrinkle structures has potential in improving flexible sensor performance.