RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy

Tomoko Takahashi; Zonghua Liu; Thangavel Thevar; Nicholas Burns; Mehul Sangekar; Dhugal Lindsay; John Watson; Blair Thornton

doi:10.1109/UT49729.2023.10103388

RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy

Tomoko Takahashi^*, Zonghua Liu, Thangavel Thevar, Nicholas Burns, Mehul Sangekar, Dhugal Lindsay, John Watson, Blair Thornton

^*Corresponding author for this work

Engineering

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Abstract

Suspended particles in the ocean play an important role in global nutrient cycles. In this paper, a novel technique for the non-contact fast identification of marine particles is reported. An integrated method of digital holography and Raman spectroscopy aiming at in-situ continuous monitoring of marine particles, particularly in the deep sea where the density of particles is extremely low, is proposed. A particle located in a 20 cm water channel was illuminated using a collimated continuous wave laser beam which is used to take both a hologram and Raman spectrum to identify the shape, size and composition of the suspended material. Using a compact system, we have demonstrated the morphological and chemical analysis of plastic particles in a large volume of water. Furthermore, we have developed the in-situ device and tested it in the deep sea at a water depth of 900 m for the first time. The technique will contribute to the understanding of global-scale marine particle distributions.

Original language	English
Title of host publication	2023 IEEE International Symposium on Underwater Technology
Subtitle of host publication	UT 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
Number of pages	5
ISBN (Electronic)	9798350331752
ISBN (Print)	979-8-3503-3176-9
DOIs	https://doi.org/10.1109/UT49729.2023.10103388
Publication status	Published - 24 Apr 2023
Event	2023 IEEE International Symposium on Underwater Technology, UT 2023 - Tokyo, Japan Duration: 6 Mar 2023 → 9 Mar 2023

Conference

Conference	2023 IEEE International Symposium on Underwater Technology, UT 2023
Country/Territory	Japan
City	Tokyo
Period	6/03/23 → 9/03/23

Bibliographical note

Funding Information:
The authors would like to thank the KM-ROV operation team and R/V Kaimei crew for their assistance during the KM21-08 cruise. The project is funded by the Japan Science and Technology Agency and Natural Environment Research Council under the SICORP program (grant number: JPMJSC1705, NE/R01227X/1). Kajima Foundation under the program of “Overseas Research Grant”, and the Japan Society for the Promotion of Science (grant number: 18H03810, 18K13934).

Keywords

Holography
In-situ optical sensing
Marine particles
Raman spectroscopy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/UT49729.2023.10103388Licence: Unspecified

Cite this

Takahashi, T., Liu, Z., Thevar, T., Burns, N., Sangekar, M., Lindsay, D., Watson, J., & Thornton, B. (2023). RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy. In 2023 IEEE International Symposium on Underwater Technology: UT 2023 Article 9.3 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/UT49729.2023.10103388

RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy. / Takahashi, Tomoko; Liu, Zonghua; Thevar, Thangavel et al.
2023 IEEE International Symposium on Underwater Technology: UT 2023. Institute of Electrical and Electronics Engineers Inc., 2023. 9.3.

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Takahashi, T, Liu, Z, Thevar, T, Burns, N, Sangekar, M, Lindsay, D, Watson, J & Thornton, B 2023, RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy. in 2023 IEEE International Symposium on Underwater Technology: UT 2023., 9.3, Institute of Electrical and Electronics Engineers Inc., 2023 IEEE International Symposium on Underwater Technology, UT 2023, Tokyo, Japan, 6/03/23. https://doi.org/10.1109/UT49729.2023.10103388

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abstract = "Suspended particles in the ocean play an important role in global nutrient cycles. In this paper, a novel technique for the non-contact fast identification of marine particles is reported. An integrated method of digital holography and Raman spectroscopy aiming at in-situ continuous monitoring of marine particles, particularly in the deep sea where the density of particles is extremely low, is proposed. A particle located in a 20 cm water channel was illuminated using a collimated continuous wave laser beam which is used to take both a hologram and Raman spectrum to identify the shape, size and composition of the suspended material. Using a compact system, we have demonstrated the morphological and chemical analysis of plastic particles in a large volume of water. Furthermore, we have developed the in-situ device and tested it in the deep sea at a water depth of 900 m for the first time. The technique will contribute to the understanding of global-scale marine particle distributions.",

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note = "Funding Information: The authors would like to thank the KM-ROV operation team and R/V Kaimei crew for their assistance during the KM21-08 cruise. The project is funded by the Japan Science and Technology Agency and Natural Environment Research Council under the SICORP program (grant number: JPMJSC1705, NE/R01227X/1). Kajima Foundation under the program of “Overseas Research Grant”, and the Japan Society for the Promotion of Science (grant number: 18H03810, 18K13934). ; 2023 IEEE International Symposium on Underwater Technology, UT 2023 ; Conference date: 06-03-2023 Through 09-03-2023",

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AU - Watson, John

AU - Thornton, Blair

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N2 - Suspended particles in the ocean play an important role in global nutrient cycles. In this paper, a novel technique for the non-contact fast identification of marine particles is reported. An integrated method of digital holography and Raman spectroscopy aiming at in-situ continuous monitoring of marine particles, particularly in the deep sea where the density of particles is extremely low, is proposed. A particle located in a 20 cm water channel was illuminated using a collimated continuous wave laser beam which is used to take both a hologram and Raman spectrum to identify the shape, size and composition of the suspended material. Using a compact system, we have demonstrated the morphological and chemical analysis of plastic particles in a large volume of water. Furthermore, we have developed the in-situ device and tested it in the deep sea at a water depth of 900 m for the first time. The technique will contribute to the understanding of global-scale marine particle distributions.

AB - Suspended particles in the ocean play an important role in global nutrient cycles. In this paper, a novel technique for the non-contact fast identification of marine particles is reported. An integrated method of digital holography and Raman spectroscopy aiming at in-situ continuous monitoring of marine particles, particularly in the deep sea where the density of particles is extremely low, is proposed. A particle located in a 20 cm water channel was illuminated using a collimated continuous wave laser beam which is used to take both a hologram and Raman spectrum to identify the shape, size and composition of the suspended material. Using a compact system, we have demonstrated the morphological and chemical analysis of plastic particles in a large volume of water. Furthermore, we have developed the in-situ device and tested it in the deep sea at a water depth of 900 m for the first time. The technique will contribute to the understanding of global-scale marine particle distributions.

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KW - Raman spectroscopy

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BT - 2023 IEEE International Symposium on Underwater Technology

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RamaCam: Autonomous in-situ monitoring system of marine particles by combining holography and Raman spectroscopy

Abstract

Conference

Bibliographical note

Keywords

UN SDGs

Access to Document

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