OPTICAL FIBER TECHNOLOGY
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2025
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IF 2.7
Xuesong Zhang,Yue Feng,Weixiang Yuan,Haodong Wu,Tao Shen
The detection of ultra-low concentrations of lithium ions (Li + ) is of paramount importance for protecting human health and preserving the ecological environment. This paper proposes a fiber-optic sensor based on lithium/aluminum layered double hydroxides (Li/Al-LDHs) modified optical microfiber coupler (OMC). Firstly, the optimal diameter of the OMC is determined through simulation analysis to optimize the sensor parameters. Secondly, functional group functionalization is employed to facilitate a robust binding of the Li/Al-LDHs to the surface of the optical fiber. Lastly, the efficacy of the sensor in detecting low concentrations of Li + was validated through experimental means. The results demonstrated that the sensor exhibited a maximum detection sensitivity of 334.222 nm/μM and a limit of detection (LOD) of 1.272 nM within the range of 1–10 nM, exhibiting good linearity (R 2 = 0.986). Furthermore, the sensor displayed excellent stability, selectivity and response time, indicating its potential for application in the detection of Li + concentration in aqueous environments.
研究领域:
环境科学
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光学传感
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材料科学
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产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2023
·
IF 5
Guoquan Wang,Dandan Sun,Lili Liang,Guanjun Wang,Jie Ma
An optical fiber sensor for detecting the concentration of trace lead ions is proposed using a polydopamine-maleic acid (PDA-MA) functional membrane coated on the surface of a Mach-Zehnder microfiber interferometer . The PDA-MA functional film is wrapped by a one-step immersion method for in-situ growth on the interferometer surface. The microfiber surface has an excellent evanescent field possessing a sensitivity to the ambient RI of 1243.455 nm/RIU and a low temperature cross-reactivity of −0.04 nm/°C. The absorption of lead ions by carboxyl groups in the fiber-coated functional film changes the refractive index of the sensor surface, which reflects a macroscopic wavelength shift in the interference spectrum. The sensor effectively detects lead ions within 10 −14 -10 −6 mol/L concentrations and has a sensitivity of 1.85 × 10 8 nm/(mol/L) in the ultra-low concentration range of 10 −14 -10 −10 mol/L with a detection limit of 0.1678 ppb. The proposed sensor is not only simple and low cost to fabricate, but also has good stability and specificity. The success of this sensor shows that the development of optical microfiber sensor with high stability and accuracy is feasible, which has progressive significance for the research of optical environmental pollution sensor.
研究领域:
环境科学
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光学传感
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材料科学
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产品关联
DOI
高影响因子
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
·
2025
·
IF 5.9
Hao-Yuan Cao,Yingying Hu,Liang Fang,Bin Liu,Juan Liu,Hong Yang,Yue Zhang,Yue Fu,Wenbo Xiao,Qiang Wu
A 1-D convolutional neural network (1-D CNN) is proposed to extract information collected from a U-shape single-mode-tapered seven core-single (STSS)-mode structure interferometer and demonstrated by measuring surrounding refractive index (RI) as a typical example of its application. Compared with the traditional dip/peak wavelength tracking method, the 1-D CNN method can effectively improve the accuracy of measurement through extracting full-spectrum information. The coefficient of determination ( $R^{2}$ ) of the RI predicted by 1-D CNN is as high as 0.992. At the same time, the effects of bandwidth and sampling points on the RI measurement accuracy are studied; by reducing the spectral sampling resolution and bandwidth, the prediction results are higher than 0.990 and 0.989, and the results show that the method of machine learning can adapt to the low sampling frequency and bandwidth. The proposed RI optical fiber sensing system has good application potential in medical and environmental monitoring fields.
研究领域:
生物医学工程
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光学传感
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分子诊断
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环境监测
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医疗检测技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Wenfu Lin,Yan Huang,Zhenru Li,Jiongshen Pan,Tiansheng Huang,Lili Liang,Yanzhen Tan,Jie Li,Li-Peng Sun,Bai-Ou Guan
Humidity plays an important role in many fields, and the realization of high sensitivity and fast response simultaneously for humidity detection is a great challenge in practical application. In this work, we demonstrated a high-performance relative humidity (RH) sensor made by supporting zeolitic imidazolate framework-90 (ZIF-90)-derived porous zinc oxide (ZnO) onto an optical microfiber Sagnac interferometer (OMSI). The ZIF-90-modified OMSI (ZIF-90-OMSI) sensor was in situ heated at different temperatures to obtain porous ZnO, and their humidity-sensing properties were investigated ranging from 25 to 80% RH. The experimental results showed that the porous ZnO fiber sensor prepared at 500 °C (Z500-OMSI) exhibited best humidity-sensing performance with a high sensitivity of 96.2 pm/% RH (25–45% RH) and 521 pm/% RH (50–80% RH) and ultrafast response/recovery time (62.37/206.67 ms) at 22.3% RH. These performances were attributed to the complete transformation of ZIF-90 to ZnO at 500 °C. The obtained Z500 not only retained the high porosity and specific surface area of ZIF-90 but also exhibited the exceptional hydrophilicity of ZnO. In addition, the signals of the proposed Z500-OMSI sensor changed with different breathing patterns, indicating the possibility for human respiration monitoring. This work provided a reliable candidate for an effective RH monitoring system with potential application in medical diagnoses, industrial production, environmental detection, and human health monitoring.
研究领域:
光学传感
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材料科学
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生物医学工程
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环境监测
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
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IF 7.4
Hongtao Li,Aiyun Zheng,Hao Wu,Weisheng Wang,Xu Wang,Yangyang Yu,Lili Liang,Huojiao Sun,Jiping Lin,Liang Lu,Jialiang Lv,Hao Yuan,Benli Yu
Nanoplastics pose a great threat to ecological water environments, especially for ocean water, lake water. Small-sized nanoplastic particles can enter into animal and plant bodies easily. Therefore, operando on-line quantification of nanoplastics in real environmental samples can bring a big challenge for early-stage water pollution testing and warning. Conventional nanoplastic particles detection technologies didn’t provide enough high sensitivity and accuracy due to their complicated and time-consuming sample pre-treatment procedures. To overcome these limitations, an optical microfiber was applied to detect nanoplastics in some real environmental samples. Owing to high sensitivity and superior specificity of the sensor, it could detect target polystyrene (PS) nanoplastics with sizes of 150 nm and 100 nm in pure water and mixture solution, realizing ultra-low limit-of-detections (LODs) of 1.23×10 −6 mg/mL, 1.41×10 −6 mg/mL and 2.31×10 −6 mg/mL, 2.96×10 −6 mg/mL, respectively. More importantly, such an optical device could also successfully recognize PS nanoplastics in collected lake, ocean, and wastewater samples. Thus, our proposed approach could open up a novel and advantageous way for operando on-line monitoring of nanoplastics in real water samples.
研究领域:
环境科学
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光学传感
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水质监测
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纳米技术
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产品关联
DOI
高影响因子
OPTICS EXPRESS
·
2020
·Vol. 28
·期 11
·15783-15793
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IF 3.669
Peng Xiao,Zhen Sun,Yan Huang,Wenfu Lin,Yuchen Ge,Ruitao Xiao,Kaqiang Li,Zhenru Li,Hanglin Lu,Mingjin Yang,Lili Liang,Li-Peng Sun,Yang Ran,Jie Li,Bai-Ou Guan
Fiber-optic biosensors are of great interest to many bio/chemical sensing applications. In this study, we demonstrate a high-order-diffraction long period grating (HOD-LPG) for the detection of prostate specific antigen (PSA). A HOD-LPG with a period number of less than ten and an elongated grating pitch could realize a temperature-insensitive and bending-independent biosensor. The bio-functionalized HOD-LPG was capable of detecting PSA in phosphate buffered saline with concentrations ranging from 5 to 500 ng/ml and exhibited excellent specificity. A limit of detection of 9.9 ng/ml was achieved, which is promising for analysis of the prostate specific antigen.
研究领域:
生物传感
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光学传感
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生物医学工程
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前列腺癌诊断
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）