Detection of fluoride ion using U-bent optical fiber functionalized with curcumin-tagged gold nanoparticles

Key Points

• Fluoride ion detection achieved a high sensitivity with functionalized gold nanoparticles, significantly improving response time.
• A sensitivity of 0.5 µM was demonstrated, showcasing promising potential for environmental monitoring applications.
• Analysis of U-bent optical fiber incorporated curcumin-tagged gold nanoparticles for enhanced signal response.
• This innovative method highlights the need for further studies in real-world applications and scalability.