As diabetes becomes an increasingly serious global health challenge, there is an urgent demand for precise, painless blood glucose monitoring technologies. Traditional blood glucose testing methods often rely on invasive pricking, prompting a need for convenient, non-invasive, real-time, and accurate monitoring solutions. Prof. Cheng-Yang Liu's team at National Yang Ming Chiao Tung University has developed a novel optical glucose sensor using spider silk's biocompatibility combined with metal nanocoating, promising to revolutionize blood glucose management for diabetes patients.
Spider Silk Optical Sensor: High Sensitivity for Continuous Monitoring
Spider silk, a natural biopolymer, possesses exceptional elasticity, mechanical strength, and minimal energy loss, making it an ideal material for optical components. Prof. Liu's team has combined this material with modern fiber optic technology to create an optical glucose sensor based on spider silk. The core innovation lies in the application of oblique angle deposition to coat a metal nanolayer onto the spider silk fiber surface, enabling the sensor to detect refractive index changes in sugar solutions with extreme sensitivity.
Experimental validation demonstrated the sensor's ability to accurately and sensitively measure changes in fructose, sucrose, and glucose concentrations, with a response time of just 0.1 milliseconds and the capability to distinguish between different concentrations of sugar solutions.
In continuous glucose monitoring (CGM) systems, traditional sensors are implanted under the skin to measure glucose levels in interstitial fluid throughout the day, presenting blood glucose fluctuations in real-time graphs. However, conventional fiber optic materials like silica or plastic are unsuitable for long-term in vivo monitoring. Spider silk optical fibers maintain their optical transmission and sensing precision for over a year at room temperature and within the human body, making them particularly suitable for long-term internal monitoring.
This technology offers high sensitivity, precision, and reliability, providing diabetes patients with real-time and accurate blood glucose data while addressing the limitations of traditional methods.
Future Prospects: Collaboration and Market Potential
Prof. Cheng-Yang Liu emphasized the broad application potential of the spider silk optical glucose sensor, especially in future medical implants and real-time monitoring devices. He noted that the technology holds promise for collaboration with international medical device companies to develop more advanced CGM systems, contributing to precision medicine in diabetes care.
The key advantage lies in the unique properties of spider silk, which enables long-term operation within the human body while achieving high-precision glucose measurement, providing a robust foundation for next-generation diabetes monitoring devices.
To meet the growing demand in this field, Prof. Liu’s team has already partnered with several domestic and international enterprises and medical institutions. They plan to advance the technology toward standardization, mass production, and application in clinical diagnostics and real-time monitoring devices.
As commercialization progresses, this groundbreaking technology is expected to benefit millions of diabetes patients worldwide in the coming years, becoming a highlight in the medical and healthcare industries.
Resource: 蜘蛛絲也能測血糖！結合光纖技術感測精準又靈敏
