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Temperature-Corrected Fluidic Glucose Sensor Based on Microwave Resonator.

Chorom Jang1, Jin-Kwan Park2, Hee-Jo Lee3

  • 1Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Korea. chorom@yonsei.ac.kr.

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Summary
This summary is machine-generated.

This study introduces a novel fluidic glucose sensor using complementary split-ring resonators (CSRRs) for microwave frequencies. The sensor accurately monitors glucose levels non-invasively and corrects for temperature variations, achieving a 0.03 dB signal change across a 0-400 mg/dL range.

Keywords:
complementary split-ring resonatorelectromagnetic biosensorfluidic glucose sensormicrowavenon-invasive detectiontemperature correction

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Area of Science:

  • Microwave Engineering
  • Biosensing Technology
  • Analytical Chemistry

Background:

  • Continuous glucose monitoring is crucial for diabetes management.
  • Existing methods often involve invasive procedures or lack real-time accuracy.
  • Microwave sensors offer a potential non-invasive detection modality.

Purpose of the Study:

  • To propose and validate a novel fluidic glucose sensor operating in the microwave frequency region.
  • To enable non-invasive detection and continuous monitoring of glucose concentrations.
  • To address and correct for temperature-induced systematic errors in sensor readings.

Main Methods:

  • Utilizing a complementary split-ring resonator (CSRR) as the core sensing element.
  • Integrating a fluidic system for sample introduction and handling.
  • Analyzing the transmission coefficient (S21) as the primary sensing parameter.
  • Developing and applying a temperature correction function based on DI water calibration.

Main Results:

  • The proposed sensor successfully detects glucose concentrations ranging from 0 mg/dL to 400 mg/dL.
  • A clear correlation was established between glucose concentration and the transmission coefficient (S21).
  • Temperature correction effectively eliminated systematic errors, ensuring accurate readings under varying thermal conditions.
  • A sensitivity of 0.03 dB was observed for the full concentration range.

Conclusions:

  • The developed fluidic CSRR-based microwave sensor provides a viable non-invasive method for continuous glucose monitoring.
  • The implemented temperature correction strategy significantly enhances the reliability and accuracy of the sensor.
  • This technology holds promise for improved diabetes management through precise, real-time glucose level tracking.