High-compatibility Manipulation Method for Parallel In-situ Isolation of Microalgal Cells via Optoelectronic Tweezers

Shilong Qin, Jiaxin Liu, Yuxin Chen, Haotian Yang, Ziyi Zhao, Qing Shi, Qiang Huang, Huaping Wang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Isolating microalgae in in-situ liquid environment based on optoelectronic tweezers (OETs) enables providing specific species of microalgae in high-purity, thus has significant potential in environmental detection, aquaculture, bioenergy, and biomedicine development. However, the conventional OET method can only separate and extract one type of microalgae in a single-step operation and is challenging to utilize the opposite dielectrophoretic force when the cross frequency of microalgae is too high /low or even absent. In this study, a novel automated microalgae isolation method based on optoelectronic tweezers is proposed, which integrates two strategies: cluster manipulation and discretized synchronous manipulation. Firstly, an optoelectronic tweezer robot platform was built, the dielectrophoretic forces on microalgae and the factors affecting the dielectrophoretic forces were analyzed. Secondly, a cluster manipulation strategy based on light patterns dynamic locomotion structure scheme was designed to simultaneously separate microalgae subject to dielectrophoretic forces of different attributes and the same attribute. Finally, a discretized synchronous manipulation strategy based on visual feedback and PID controller was designed to realize the precise isolation of microalgae subjected to the same dielectrophoretic force and different dielectrophoretic forces. Experimental results demonstrated that the aforementioned method provides a feasible microalgae isolating method based on optoelectronic tweezers within 10 minutes, which has potential applications in the in-situ water contamination detection and treatment.

Original languageEnglish
Title of host publication2024 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages455-460
Number of pages6
ISBN (Electronic)9798350372601
DOIs
Publication statusPublished - 2024
Event2024 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2024 - Alesund, Norway
Duration: 24 Jun 202428 Jun 2024

Publication series

Name2024 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2024

Conference

Conference2024 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2024
Country/TerritoryNorway
CityAlesund
Period24/06/2428/06/24

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