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Micromotor-Assisted Human Serum Glucose Biosensing.

Lei Kong1,2, Nasuha Rohaizad1,3, Muhammad Zafir Mohamad Nasir1

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Mg/Pt Janus micromotors with self-rejuvenating surfaces significantly boost electrochemical glucose sensing in human serum. This micromachine-enhanced detection improves sensitivity and lowers the limit of detection for potential biomedical applications.

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Area of Science:

  • Biomedical Sciences
  • Nanotechnology
  • Electrochemistry

Background:

  • Artificial self-propelled micromachines show promise in biomedical applications.
  • Electrochemical sensing of glucose in human serum is crucial for diagnostics.

Purpose of the Study:

  • To enhance electrochemical sensing performance and sensitivity for glucose detection in human serum using Mg/Pt Janus micromotors.
  • To investigate the role of micromotor motion in improving mass transfer for glucose sensing.

Main Methods:

  • Utilized Mg/Pt Janus micromotors with self-rejuvenating surfaces.
  • Employed a glucose oxidase enzyme and ferrocenemethanol shuttle system for glucose detection.
  • Analyzed chronoamperometric data to assess current response and sensitivity.

Main Results:

  • Mg/Pt Janus micromotors synergistically enhanced the current response for glucose detection in human serum.
  • Increased micromotor concentration led to higher current signals.
  • A linear relationship was established between current signal and glucose concentration, with improved limit of detection.

Conclusions:

  • Mobile Mg/Pt Janus micromachines significantly enhance glucose detection sensitivity and performance in human serum.
  • Micromachine-enhanced glucose detection offers a promising approach for future biomedical and diagnostic devices.