Ultra-sensitive Fiber-OECT biosensor enabled by ZIF-67/f-MWCNT for noninvasive urea monitoring

Key Points

• Urea monitoring showed enhanced sensitivity with the ultra-sensitive fiber-OECT biosensor setup.
• The biosensor achieved detection limits of urea as low as 1 μM, demonstrating its effectiveness in real-world conditions.
• Analysis used fiber-optic electrochemical transistors, leveraging zinc-based frameworks and functionalized carbon nanotubes to improve responsiveness.
• This approach highlights advances in noninvasive biosensing technologies, opening pathways for better health monitoring.