Abstract
Fiber optic surface plasmon resonance (FO SPR) sensor offers attractive advantages over the conventional prism-based SPR platforms, such as simplicity, cost-effectiveness, and miniaturization. To improve the performance of the existing FO SPR sensor which has been fabricated by depositing a gold thin film on the flat fiber cross-section or side surface, we propose to fabricate the polymer microtip array on optical fiber using simple cost-effective soft and imprint lithography because SPR instruments mainly depend on the structural aspect of the thin metal plasmonic film deposited on the optical fiber substrate. The fabricated microstructures are also combined with the gold nanoparticles to expand the sensing area. The proposed sensor displayed 175% improved sensitivity with linear response according to refractive index changes, when developed FO SPR sensor and conventional FO SPR sensor without microtip array were applied to refractive index measurement, respectively. Based on the obtained results, the proposed FO SPR sensor can ultimately be used in various applications, ranging from food safety, environmental monitoring, and biomarker analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.