Fiber-Optic Mach–Zehnder Interferometer Based on Α-Fe2o3@Mos2 Functionalization for Cd2+ Trace Detection

Yang, Tianyu; Yuan, Weixiang; Feng, Yuan; Liu, Chi; Shen, Tao

doi:10.2139/ssrn.4369500

Cited by 1 publication

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“…Optical fiber sensor has the advantages of low cost, real-time detection of field environment, fast response and high sensitivity. Combining it with sensitive materials has become one of the most important applications in heavy metal ion detection [11][12][13]. Tan et al proposed an EDTA functional fiber sensor based on superstructure FBG (SSFBG) to detect Cd 2+ ion [14] with a maximum detection sensitivity of 0.150dB / 10ppm.…”

Section: Introductionmentioning

confidence: 99%

A highly sensitive optical fiber sensor based on magnetic ion imprinting technology

Yang,

Feng,

Tao

2023

AOPC 2023: Optic Fiber Gyro

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In view of the high cost, slow response and insufficient detection limit of traditional detection methods, this paper proposes a high sensitive fiber sensor based on magnetic ion imprinting technology for the detection of low concentration of Cd 2+ . First, the evanescent field and waist cone diameter are analyzed by beam propagation method (BPM), and the sensing unit is prepared. Second, γ-Fe2O3@MAA(M-IIP) magnetic ion printing nanomaterials were prepared by solid-liquid separation and combined the magnetic blomaterial with the sensing unit by silanlation. Finally, the sensor enables a low-concentration detection of Cd 2+ . The detection sensitivity was up to 2691.5nm/μM in the range of 0-1 μM. The limit of detection (LOD) reached 0.45 nM and the response time was 37s at the lowest concentration. At the same time, the sensor also has good results in terms of structural compactness and production cost.

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