Sign in Subscribe
Sensors

Breakthrough in Non-Invasive Glucose Sensing Technology

Strategic Insights

— 1 min read

Researchers from Kyungnam University in South Korea have successfully designed an orientation-independent non-invasive glucose sensor based on a meta-structured antenna. This innovative device, funded by the Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea, and the Innovative Human Resource Development for Local Intellectualization program, has shown promising results in detecting glucose levels in the blood through fingertip placement.

Key Takeaways:

  • The sensor features a mushroom structure to generate zeroth-order resonance (ZOR) and has an operating frequency of 4 GHz, with an overall size of 55 mm x 55 mm.
  • The sensor's linear relationship between resonance frequency and glucose concentration has been observed, with a linear shift of 0.352 MHz/mg/dL.
  • The reflection coefficient level variation is a nonlinear function of the glucose concentration, but the resonance frequency exhibits a strong linear correlation, making it a more reliable parameter for accurate prediction.
  • The sensor's accuracy was verified through regression analysis (R2 = 0.993), demonstrating its potential for non-invasive glucose sensing.
  • The sensor has been designed to detect glucose concentrations in the range of 50 to 250 mg/dL, with a step size of 50 mg/dL.
  • The study's results suggest that the resonance frequency is a more reliable parameter for accurate prediction than the reflection coefficient level.
  • The research has implications for the development of non-invasive glucose sensing technology for diabetes management and monitoring.

Statistics:

  • 55 mm x 55 mm: the overall size of the sensor
  • 4 GHz: the operating frequency of the sensor
  • 0.352 MHz/mg/dL: the linear shift of resonance frequency with glucose concentration
  • 50-250 mg/dL: the glucose concentration range detected by the sensor
  • 50 mg/dL: the step size of glucose concentration
  • 0.993: the R2 value of regression analysis, indicating high accuracy
  • 55 mm x 55 mm: the size of the sensor

Sources:

  • NewsRx LLC. (2025, July 7). Researchers from Kyungnam University Report Findings in Electronics (Design of Orientation-independent Non-invasive Glucose Sensor Based On Meta-structured Antenna). Journal of Engineering, 2025; p 4283.
  • Reuters News Service. (2025, July 7). Breakthrough in Non-Invasive Glucose Sensing Technology. Electronic News, p 12.
  • Kyungnam University. (2025). Design of Orientation-independent Non-invasive Glucose Sensor Based On Meta-structured Antenna. Electronics, 2025;14(11).

Read more