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Autonomous object harvesting using synchronized optoelectronic microrobots

Bendkowski, C; Mennillo, L; Xu, T; Elsayed, M; Stojic, F; Edwards, H; Zhang, S; ... Shaw, M; + view all (2021) Autonomous object harvesting using synchronized optoelectronic microrobots. In: Proceedings of the 2021 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). (pp. pp. 7498-7504). Institute of Electrical and Electronics Engineers (IEEE) Green open access

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Abstract

Optoelectronic tweezer-driven microrobots (OETdMs) are a versatile micromanipulation technology based on the application of light induced dielectrophoresis to move small dielectric structures (microrobots) across a photoconductive substrate. The microrobots in turn can be used to exert forces on secondary objects and carry out a wide range of micromanipulation operations, including collecting, transporting and depositing microscopic cargos. In contrast to alternative (direct) micromanipulation techniques, OETdMs are relatively gentle, making them particularly well suited to interacting with sensitive objects such as biological cells. However, at present such systems are used exclusively under manual control by a human operator. This limits the capacity for simultaneous control of multiple microrobots, reducing both experimental throughput and the possibility of cooperative multi-robot operations. In this article, we describe an approach to automated targeting and path planning to enable open-loop control of multiple microrobots. We demonstrate the performance of the method in practice, using microrobots to simultaneously collect, transport and deposit silica microspheres. Using computational simulations based on real microscopic image data, we investigate the capacity of microrobots to collect target cells from within a dissociated tissue culture. Our results indicate the feasibility of using OETdMs to autonomously carry out micromanipulation tasks within complex, unstructured environments.

Type: Proceedings paper
Title: Autonomous object harvesting using synchronized optoelectronic microrobots
Event: 2021 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Location: Prague, Czech Republic
Dates: 27th September 2021 - 1st October 2021
ISBN-13: 978-1-6654-1714-3
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/IROS51168.2021.9636475
Publisher version: https://doi.org/10.1109/IROS51168.2021.9636475
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
Keywords: Micro/Nano Robots, Computer Vision for Automation, Path Planning for Multiple Mobile Robots or Agents, Biological Cell Manipulation
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10144744
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