SPR humidity dynamic monitoring method via PVA sensing membrane thickness variation and image processing techniques

IF 2.5 3区 物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yu Fan, Min Chang, Xiantong Yu, Jun Zhou, Yueyan Shi
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引用次数: 0

Abstract

Humidity monitoring is paramount in diverse applications, industrial, and medical applications. Surface Plasmon Resonance (SPR) is an optical detection technique capable of sensing various environmental parameters through changes in reflected optical spectra and has garnered significant attention. Typically, SPR sensing employs a single-point detection strategy with the sample at a fixed concentration to achieve optimal sensitivity, limiting its application in dynamic environmental testing. This study proposes an image-based SPR humidity monitoring method, integrating SPR with image processing, enabling dynamic parameter reconstruction, and achieving high responsiveness. Au-PVA is used as a sensing film. To attain the best sensing film thickness, sensing film thicknesses ranging from 94.0 nm to 243.3 nm were tested. Through optimizing film thickness and image data processing, high precision and dynamic responsiveness were achieved. Experimental results demonstrate a response time of 84 ms and an average relative prediction error of 1.57 % for the sensor. Our research holds significant promise for dynamic and accurate humidity detection.

通过 PVA 传感膜厚度变化和图像处理技术实现 SPR 湿度动态监测方法
湿度监测在各种应用、工业和医疗应用中都至关重要。表面等离子体共振(SPR)是一种光学检测技术,能够通过反射光光谱的变化来感知各种环境参数,因此备受关注。通常情况下,SPR 传感采用单点检测策略,以固定浓度的样品达到最佳灵敏度,因此限制了其在动态环境检测中的应用。本研究提出了一种基于图像的 SPR 湿度监测方法,该方法将 SPR 与图像处理相结合,可实现动态参数重建,并具有高响应性。采用 Au-PVA 作为传感薄膜。为了获得最佳传感膜厚度,测试了 94.0 nm 至 243.3 nm 的传感膜厚度。通过优化薄膜厚度和图像数据处理,实现了高精度和动态响应性。实验结果表明,该传感器的响应时间为 84 毫秒,平均相对预测误差为 1.57%。我们的研究为动态和精确湿度检测带来了重大希望。
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来源期刊
CiteScore
5.00
自引率
3.70%
发文量
77
审稿时长
62 days
期刊介绍: This journal establishes a dedicated channel for physicists, material scientists, chemists, engineers and computer scientists who are interested in photonics and nanostructures, and especially in research related to photonic crystals, photonic band gaps and metamaterials. The Journal sheds light on the latest developments in this growing field of science that will see the emergence of faster telecommunications and ultimately computers that use light instead of electrons to connect components.
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