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Low-cost surface plasmon resonance refractive index sensor based on the metal grating in DVD-ROM disc.
- Source :
-
Sensors & Actuators A: Physical . Oct2021, Vol. 330, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- [Display omitted] • A low-cost surface plasmon resonance refractive index sensor based on DVD-ROM has been studied. • Wavelength modulation is used to detect different concentrations of NaCl solution, and the sensitivity is 540 nm/RIU. • Angular modulation is also used to detect NaCl solution, and the sensitivity is 32.4 degree/RIU. • FDTD simulation results are in good agreement with the experimental results. In this paper, a low-cost surface plasmon resonance refractive index sensor based on DVD-ROM is introduced. There is a special grating structure in DVD-ROM, which can be used to excite SPR effect. We have measured the optimal resonance angle of the grating with deionized water at 28°. Wavelength modulation and angle modulation are used to detect different concentrations of sodium chloride solution. The results show that the sensitivities of the two modulation methods are 540 nm/RIU and 32.4 degree/RIU, respectively. Furthermore, we use finite difference time domain method to simulate the two methods separately. The sensitivities are 514 nm/RIU and 30.8 degree/RIU, respectively. The simulation results are in good agreement with the experimental results. Using this method to prepare the detection substrate can greatly reduce the production cost of SPR sensors. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SURFACE plasmon resonance
*FINITE difference time domain method
*REFRACTIVE index
Subjects
Details
- Language :
- English
- ISSN :
- 09244247
- Volume :
- 330
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators A: Physical
- Publication Type :
- Academic Journal
- Accession number :
- 151194685
- Full Text :
- https://doi.org/10.1016/j.sna.2021.112858