Lu Y, Hao CJ, Wu BQ, Huang XH, Wen WQ, Fu XY, Yao JQ. Grapefruit fiber filled with
silver nanowires surface plasmon resonance sensor in aqueous environments.
SENSORS (BASEL, SWITZERLAND) 2012;
12:12016-25. [PMID:
23112697 PMCID:
PMC3478824 DOI:
10.3390/s120912016]
[Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 08/10/2012] [Accepted: 08/10/2012] [Indexed: 11/16/2022]
Abstract
A kind of surface plasmon resonance sensor based on grapefruit photonic crystal fiber (PCF) filled with different numbers of silver nanowires has been studied in this paper. The surface plasmon resonance modes and the sensing properties are investigated comprehensively using the finite element method (FEM). The simulation results show that the intensity sensitivity is related to nanowire numbers and the distance between two nanowires. The optimum value obtained is 2,400 nm/RIU, corresponding to a resolution of 4.51 × 10(-5) RIU with a maximum distance of 2 μm. To a certain extent, the PCF filled with more nanowires is better than with just one. Furthermore, the air holes of grapefruit PCF are large enough to operate in practice. Moreover, the irregularity of the filled nanowires has no effect on sensitivity, which will be very convenient for the implementation of experiments.
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