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Related Concept Videos

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Smartphone-based cyclic voltammetry system with graphene modified screen printed electrodes for glucose detection.

Daizong Ji1, Lei Liu1, Shuang Li1

  • 1Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, PR China; Collaborative Innovation Center of TCM Health Management, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China.

Biosensors & Bioelectronics
|July 18, 2017
PubMed
Summary

This study presents a low-cost, smartphone-based cyclic voltammetry (CV) system for real-time electrochemical detection. The portable device enables simple electrode modification and demonstrates high accuracy for glucose sensing in various applications.

Keywords:
Cyclic voltammetryGlucosePortable detectorReduced graphene oxideSmartphone

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Area of Science:

  • Electrochemistry
  • Biosensors
  • Mobile Health

Background:

  • Smartphone-based electrochemical devices offer advantages like low cost, miniaturization, and real-time data acquisition.
  • Cyclic voltammetry (CV) is a versatile electrochemical technique for quantitative detection and electrode modification.

Purpose of the Study:

  • To construct a smartphone-based CV system with a simple electrode modification method for electrochemical detections.
  • To demonstrate the system's capability for quantitative detection and electrode modification in various fields.

Main Methods:

  • A portable electrochemical detector with energy transformation and low-cost potentiostat modules was developed.
  • A smartphone application (App) controlled the system, displaying data and commands via Bluetooth.
  • Screen-printed electrodes were modified with reduced graphene oxide (rGO) and a sensitive substance (3-amino phenylboronic acid for glucose detection).

Main Results:

  • The smartphone-based CV system achieved detection errors less than 3.8% compared to commercial systems.
  • The fabricated glucose sensor exhibited linear, sensitive, and specific responses to glucose, with a limit of detection as low as 0.026mM.
  • The system demonstrated effective detection in blood serum samples.

Conclusions:

  • The developed smartphone-based CV system is a cost-effective and portable solution for electrochemical analysis.
  • The system shows significant potential for electrode modification and detection in diverse fields including public health, water monitoring, and food quality.