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Developing a versatile electrochemical platform with optimized electrode configuration through screen-printing

Xiao Li1, Man Zhang1, Yujie Hu1

  • 1School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, 211189, China.

Biomedical Microdevices
|October 10, 2020
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Summary

This study developed optimized screen-printed electrodes (SPEs) for rapid glucose detection. The circular SPE design showed high sensitivity, making it suitable for point-of-care diagnostic applications.

Keywords:
ElectrochemicalGlucose detectionPoint-of-careScreen-printed electrode

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Area of Science:

  • Electrochemistry
  • Biosensor Technology
  • Materials Science

Background:

  • Rapid glucose detection is crucial for managing diabetes.
  • Screen-printed electrodes (SPEs) offer advantages like portability and disposability for electrochemical sensing.
  • Electrode design significantly influences sensor performance.

Purpose of the Study:

  • To develop a versatile electrochemical platform using screen-printing technology.
  • To investigate the electrocatalytic properties of different SPEs for glucose detection.
  • To compare enzyme-based and non-enzymatic approaches on optimized SPEs.

Main Methods:

  • Fabrication of three types of SPEs with optimized three-electrode configuration via screen-printing.
  • Drop-casting of enzyme-based (GOD/rGO) and non-enzymatic (Co@MoS2/rGO) compounds onto SPEs.
  • Morphological characterization using scanning electron microscopy (SEM) and electrochemical analysis via cyclic voltammetry.

Main Results:

  • The circular SPE demonstrated superior electrochemical redox activity and sensitivity for glucose detection compared to other designs.
  • Both enzyme-based and non-enzymatic modifications showed electrocatalytic activity towards glucose.
  • SEM confirmed the successful deposition of bioactive compounds on the SPEs.

Conclusions:

  • The optimized circular SPE platform is a promising candidate for sensitive and rapid glucose monitoring.
  • Screen-printing technology enables the cost-effective mass production of high-performance glucose biosensors.
  • The developed SPEs facilitate point-of-care glucose detection with enhanced sensitivity.