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PEC-DFM Hybrid-Sensor Based on Nanoparticle-Resolved Estimation for Sensitive and Reversible Glucose Monitoring.

Zihao Zhang1, Junzheng Liu1, Qinggong Wu1

  • 1Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, School of Information Science and Engineering, Yanshan University, Qinhuangdao, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
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Summary
This summary is machine-generated.

This study presents a novel photoelectrochemical-dark-field microscopy (PEC-DFM) hybrid sensor for glucose detection in wound fluid. The advanced sensor offers reversible and ultrasensitive glucose monitoring, crucial for chronic wound healing management.

Keywords:
PEC‐DFM hybrid‐sensing systemphotoelectrochemical sensorreversible sensing mechanismultrasensitive and reversible glucose detection

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Area of Science:

  • Nanomaterials Science
  • Analytical Chemistry
  • Biomedical Engineering

Background:

  • Accurate glucose detection in wound exudate is vital for managing chronic wounds.
  • Photoelectrochemical (PEC) sensors face challenges with material degradation during operation.

Purpose of the Study:

  • To develop a stable and ultrasensitive glucose sensing platform for wound monitoring.
  • To investigate nanoparticle behavior and photocurrent generation mechanisms.
  • To establish a reversible, non-invasive glucose detection method.

Main Methods:

  • Integration of dark-field microscopy (DFM) with a PEC system to form a hybrid-sensing platform.
  • Utilizing Ag NP@Au NCs nanocomposites for enhanced sensor performance.
  • Employing scattering spectroscopy for real-time nanoparticle monitoring.
  • Long-term observation of scattering spectrum parameters to elucidate photocurrent generation.

Main Results:

  • Achieved a 193-fold increase in signal-to-noise ratio using Ag NP@Au NCs.
  • Successfully excluded damaged nanoparticles during measurement via the PEC-DFM system.
  • Deciphered photocurrent generation mechanism, confirming electron transfer within nanocomposites.
  • Demonstrated reversible (20 rounds) and ultrasensitive glucose detection with a 0.49 pM limit of detection.

Conclusions:

  • The PEC-DFM hybrid-sensing platform offers a robust tool for wound management.
  • The study provides insights into designing advanced hybrid sensing systems.
  • This technology enables precise, real-time monitoring of glucose levels in wound exudate.