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Slab Waveguide and Optical Fibers for Novel Plasmonic Sensor Configurations
Nunzio Cennamo1, Francesco Mattiello2, Luigi Zeni3
1Department of Industrial and Information Engineering, University of Campania "L. Vanvitelli", via Roma 29, 81031 Aversa, Italy. nunzio.cennamo@unicampania.it.
Sensors (Basel, Switzerland)
|July 5, 2017
Summary
This study introduces a low-cost surface plasmon resonance sensor using a Polymethyl methacrylate (PMMA) waveguide. The novel design facilitates on-site detection with easily replaceable chips for biochemical applications.
Area of Science:
- Plasmonics
- Optical Sensors
- Biochemical Analysis
Background:
- Plasmonic sensors often require disposable components for on-site analysis.
- There is a need for cost-effective and user-friendly sensor platforms.
Purpose of the Study:
- To develop a novel, low-cost surface plasmon resonance (SPR) sensor platform.
- To enable selective detection of analytes in aqueous solutions using a disposable chip design.
Main Methods:
- Utilized a Polymethyl methacrylate (PMMA) slab waveguide with a gold film.
- Employed a specialized holder with a trench for light coupling via a plastic optical fiber (POF).
- Collected output light using a second POF and analyzed with a spectrometer.
Main Results:
- Successfully excited surface Plasmon waves using a PMMA POF and a trench design.
- Demonstrated the sensor's suitability for biochemical applications through preliminary testing.
- Confirmed the effectiveness of the chip replacement mechanism for simplified procedures.
Conclusions:
- The proposed SPR sensor platform is cost-effective and suitable for on-site biochemical detection.
- The design facilitates easy chip replacement, simplifying measurement procedures.
- This innovation offers a practical solution for rapid, disposable sensing.
