Research on in-situ detection technology for marine biofouling based on photoacoustic signal excitation and detection

Qinglin Kong; Xingkui Yan; Shanshan Zheng; Dongqing Peng; Haofang Yu; Liang Zheng; Minzhe Liu; Wei Wang; Ruizhan Zhai; Peixin Chen

doi:10.1117/12.2689074

27 November 2023 Research on in-situ detection technology for marine biofouling based on photoacoustic signal excitation and detection

Qinglin Kong, Xingkui Yan, Shanshan Zheng, Dongqing Peng, Haofang Yu, Liang Zheng, Minzhe Liu, Wei Wang, Ruizhan Zhai, Peixin Chen

Author Affiliations +

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127711V (2023) https://doi.org/10.1117/12.2689074
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Marine instruments deployed in seawater inevitably experience biofouling, which severely reduces their service life and hinders ocean monitoring. Marine biofouling greatly affects the service life of marine optical instruments and thus has a detrimental impact on ocean monitoring. The fouling community exhibits an attachment succession phenomenon. Macroscopic fouling organisms have adherent and stubborn attachments, whereas microorganisms during early fouling stages are easy to remove, but excessive cleaning also greatly increases energy consumption. Therefore, monitoring biofouling and selecting appropriate removal timing is critical. Due to the complex and dynamic nature of the marine environment, in-situ detection of microbial fouling on optical window of marine optical instrument is challenging because of many factors such as target characteristics, seawater turbidity, light refraction and scattering. Currently, there are no mature technologies available for in-situ fouling detection so as to remove timely micro fouling. To solve this problem, this study deployed thin poly methyl methacrylate (PMMA) coupons within the coastal seawaters of Qingdao, followed by in-situ mapping of photoacoustic signals using a self-built excitation and detection platform, along with along with of transmittance spectrum analysis on fouled PMMA thin films using PerkinElmer LAMBDA750. By combining results from both techniques with microscopic morphology analysis, we explored the relationship between microbial fouling and photoacoustic signal. The research results will provide a novel approach and technical basis for in-situ detection and timely clearance of microbial fouling on optical windows of marine optical instruments.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Qinglin Kong, Xingkui Yan, Shanshan Zheng, Dongqing Peng, Haofang Yu, Liang Zheng, Minzhe Liu, Wei Wang, Ruizhan Zhai, and Peixin Chen "Research on in-situ detection technology for marine biofouling based on photoacoustic signal excitation and detection", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127711V (27 November 2023); https://doi.org/10.1117/12.2689074

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