Imparting magnetic dipole heterogeneity to internalized iron oxide nanoparticles for microorganism swarm control

Kim, Paul Seung Soo; Becker, Aaron T.; Ou, Yan; Julius, A. Agung; Kim, Min Jun

doi:10.1007/s11051-014-2746-y

Cited by 24 publications

(10 citation statements)

References 28 publications

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“…1 b). Each optical spot that is focused on the light-absorbing layer of the substrate produces a localized hot spot, vaporizing a small volume of the liquid, and thus generating an OFB microrobot [ 28 ]. The thermocapillary flow generated by the temperature gradient and resulting surface tension gradient at the gas–liquid interface of the bubble pulls the OFB microrobot toward the center of the localized hot spot [ 28 ].…”

Section: Methodsmentioning

confidence: 99%

“…Despite the challenges, the independent actuation of multiple magnetic microrobots has been demonstrated and was made possible by fabricating the microrobots with different dimensions to obtain different magnetic signatures [ 25 , 26 ]. Bacteria-propelled microrobots based on the motility of the bacteria have a limited degree of controllability [ 27 ], but the use of electrical signals [ 28 ], UV light [ 4 ], or chemical energy [ 3 , 27 ] in conjunction with bacteria propulsion helps to achieve higher controllability, and has been used to actuate multiple microrobots [ 3 ]. Bacteria-inspired microrobots actuated by magnetic [ 29 ], acoustic [ 30 ], or a combination of these forces [ 31 ] is capable of parallel control, but complex motion, such as actuation along multiple trajectories, is more difficult [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

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Vision-assisted micromanipulation using closed-loop actuation of multiple microrobots

et al. 2017

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Accurate control and precise positioning of opto-thermocapillary flow-addressed bubble microrobots are necessary for micromanipulation. In addition, micromanipulation using the simultaneous actuation of multiple microrobots requires a robust control system to enable independent motion. This paper demonstrates a hybrid closed-loop vision-assisted control system capable of actuating multiple microrobots simultaneously and positioning them at precise locations relative to micro-objects under manipulation. A vision-assisted grasp-planning application was developed and used to calculate the necessary trajectories of the microrobots to form cages around micro-objects. The location of the microrobots and the micro-objects was detected at the caging locations using a particle-tracking application that used image feedback for precise positioning. The closed-loop image feedback information enabled the position update of the microrobots, allowing them to precisely follow the trajectory and caging locations calculated by the grasp-planning application. Four microrobots were assigned to cage a star-shaped micro-object using the closed-loop control system. Once caged, the micro-object was transported to a location within the workspace and uncaged, demonstrating the micromanipulation task. This microrobotic system is well suited for the micromanipulation of single cells.Electronic supplementary materialThe online version of this article (doi:10.1186/s40638-017-0064-4) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vision-assisted micromanipulation using closed-loop actuation of multiple microrobots

et al. 2017

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“…On the contrary, hardware intelligence is based on encoding the intelligence within the microrobot by the integration of materials sensitive to the environmental changes that initiate responses to different stimulus cues [106], [153]. This domain is especially promising for chemically and biohybrid actuated microrobots by exploiting selective, or thermally-sensitive chemical reactions, or the different taxis and stimulus-responses of microorganisms [100], [154]. For instance, Kim et al propose a novel approach that combines software and hardware intelligence for obstacle avoidance of a bacteria-powered microrobot by exploiting the response of bacteria to electrical field [155].…”

Section: Autonomy and Intelligencementioning

confidence: 99%

Mobile Microrobots for In Vitro Biomedical Applications: A Survey

et al. 2022

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The demand in the biomedical field for fast and precise devices for in-vitro applications has increased in recent years. Mobile microrobots are significantly suitable for such applications and are developing rapidly. These microrobots offer untethered actuation towards a contamination-free environment while allowing for fast and precise handling of biological entities for applications such as positioning, sensing, delivery, and cell surgery that are highly effective for new drug discoveries and to improve our understanding of cells behavior on the single-cell level.Here, we present a review of the recent state-of-the-art in the actuation and implementation of mobile microrobots for in-vitro applications. We will first explore the widely used methods of wireless actuation. Next, we address the challenge of implementing an on-board interaction technique to handle the target biological entity without affecting the actuation of the microrobot. Finally, we will discuss the future directions that would draw the basic outline for the next generation of mobile microrobots for in-vitro applications.

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“…Hence, the swarm of bacteria moves in a certain direction based on the artificial signals. Kim et al [62] utilized the motility of a eukaryotic cell T etrahymena pyri-f ormis to turn it into a microrobotic system. T .…”

Section: Multi-microrobot Control Using Physiological Energymentioning

confidence: 99%

Controlling multiple microrobots: recent progress and future challenges

2015

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Robots the size of several microns have numerous application in medicine, biology, and manufacturing. However, simultaneous control of multiple robots at this scale is difficult since the robot itself is too small to carry power, sensors, communication, and control on-board. In this paper, we have summarized different approaches, ranging from specialized robot design and fabrication to specialized ways of actuating robots, with the aim of independent control of a team/swarm of microrobots. We have also discussed the challenges for each approach. In the light of the challenges, we have proposed some directions where the future researchers can focus in order to solve the problem of independent control of a team of microrobots.

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Imparting magnetic dipole heterogeneity to internalized iron oxide nanoparticles for microorganism swarm control

Cited by 24 publications

References 28 publications

Vision-assisted micromanipulation using closed-loop actuation of multiple microrobots

Vision-assisted micromanipulation using closed-loop actuation of multiple microrobots

Mobile Microrobots for In Vitro Biomedical Applications: A Survey

Controlling multiple microrobots: recent progress and future challenges

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