Study on the absorption characteristics and refractive index sensitivity characteristics of the periodic structure of double nanorods

Fengying Yang

doi:10.24294/can.v5i2.1699

Study on the absorption characteristics and refractive index sensitivity characteristics of the periodic structure of double nanorods

Fengying Yang

Article ID: 1699
Vol 5, Issue 2, 2022

VIEWS - 280 (Abstract) 273 (PDF)

Abstract

Metamaterial perfect absorber is very important in the study of refractive index sensor. The time domain finite difference method is used to simulate the surface plasmon structure. The double nanorod periodic structure is designed, and the parameters of the top layer structure are optimized according to the impedance matching principle, and the absorption rate of the structure to the light wave reaches 99.6% when the wavelength is about 12 mm. The absorption spectroscopy of the structure is studied with the change of the refractive index of the spatial medium around the structure, and the sensitivity of the double nanorod structure is 4,008 nm/RIU, which can be used to measure the refractive index of the gas.

Keywords

Surface Plasmon; Sensor; Nanorod; Absorption Spectrum; Sensitivity

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References

1. Pendry JB, Negative refraction makes a perfect lens. Physical Review Letters 2000; 85(18): 3966–3969.

2. Fang N, Lee H, Sun C, et al. Sub-diffraction-limited optical imaging with a silver superlens. Science 2005; 308(5721): 534–537.

3. Schurig D, Mock JJ, Justice BJ, et al. Metamaterial electromagnetic cloak at microwave frequencies. Science 2006; 314(5801): 977–980.

4. Iwaszczuk K, Strikwerda AC, Fan KB, et al. Flexible metamaterial absorbers for stealth applications at terahertz frequencies. Optics Express 2012; 20(1): 635–643.

5. Landy NI, Sajuyigbe S, Mock JJ, et al. Perfect metamaterial absorber. Physical Review Letters 2008; 100(20): 207402.

6. Pan W, Yu X, Zhang J, et al. Absorption Characteristics analysis of Terahertz metamaterial absorber based on double-open square sheet. Applied Laser 2016; 36(3): 346–350.

7. Mo M, Wen Q, Chen Z, et al. Ultra-wideband polarization insensitive terahertz absorber based on truncated cone structure. Chinese Journal of Physics 2013; 62(23): 237801.

8. Liu N, Mesch M, Weiss T, et al. Infrared perfect absorber and its application asplasmonic sensor. Nano Letters 2010; 10(7): 2342–2348.

9. Lou W, Shen T, Liu H, et al. Fiber optic transverse pressure sensor based on long-cycle fiber grating and butterfly cone. Optoelectronics & Lasers 2016; 27(11): 1145–1148.

10. Xu H, Hu L, Lu Y, et al. Dual-band metamaterial absorbers in the visible and near-infrared regions. Journal of Physical Chemistry C 2019; 123(15): 10028–10033.

11. Wang S, Sun X, Ding M, et al. The investigation of an LSPR refractive index sensor-based on periodic gold nanoringsarray. Journal of Physics D: Applied Physics 2018; 51(4): 045101.

12. Xu J, Zhao Z, Yu H, et al. Design of triple-band metamaterial absorbers with refractive index sensitivity at infrared frequencies References and links. Optics Express 2016; 24(22): 25742–25751.

13. Wang B, Koschny T, Soukoulis CM. Wide-angle and polarization-independent chiral metamaterial absorber. Physical Review B 2009; 80(3): 033108.

14. Tuong PV, Park JW, Rhee JY, et al. Polarization-insensitive and polarization-controlled dual-band absorption in metamaterials. Applied Physics Letters 2013; 102(8): 081122.

15. Lu X, Zhang L, Zhang T. Nanoslit-microcavity-based narrow band absorber forsensingapplications. Optics Express 2015; 23(16): 20715–20720.

DOI: https://doi.org/10.24294/can.v5i2.1699