Targeting Behavior of Magnetic Particles Under Gradient Magnetic Fields Produced by Two Types of Permanent Magnets

Cao, Quanliang; Wang, Zhen; Zhang, Bo; Yang, Feng; Zhang, Shaozhe; Han, Xiaotao; Li, Liang

doi:10.1109/tasc.2016.2514716

Cited by 8 publications

(6 citation statements)

References 26 publications

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“…However, it should be noted that the MNPs move much faster in the simulation than that in the experiment, which can be seen from the time parameters in Figures 3 and 4. The main reasons for this phenomenon are related to the following two factors: (1) magnetic particles can be aggregated under the action of magnetic interactions between particles which has been widely mentioned in the studies relevant to magnetic manipulation of particles [14][15][16] and the formation of elongated aggregates will accelerate the process of particle focusing [17,18]. (2) Hydrodynamic interactions between particles could aid the focusing of magnetic particles [19][20][21].…”

Section: Experimental Configurationmentioning

confidence: 99%

Investigation of Magnetic Nanoparticle Motion under a Gradient Magnetic Field by an Electromagnet

Wei

Wang

2018

Journal of Nanomaterials

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Finite element numerical simulations were carried out in 2D geometry to calculate the magnetic force on magnetic nanoparticles under a specially fabricated electromagnet. The particle motion was modeled by a system of ordinary differential equations. The snapshots of trajectories of 4000 MNPs with and without magnetic field were analyzed and qualitatively found to be in agreement with camera visualizations of MNP movement in a container. The results of the analysis could be helpful for the design of electromagnetic field and motion analysis of magnetic particles for the delivery of magnetic materials in biomedical applications.

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Section: Experimental Configurationmentioning

confidence: 99%

Investigation of Magnetic Nanoparticle Motion under a Gradient Magnetic Field by an Electromagnet

Wei

Wang

2018

Journal of Nanomaterials

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“…In this work, a gradient magnetic field is adopted to organize the magnetic particles into tentacle-like structures. As compared with previous work of constructing microrobot chains in more than 30 s, 49 the proposed method only takes several seconds to generate chains or tentacles (Figure 4e), which is much quicker than the existing approaches. More intriguingly, based on our experimental observation, the distribution of tentacles can be changed by moving a surrounding permanent magnet.…”

Section: Resultsmentioning

confidence: 99%

Collective Behaviors of Magnetic Microparticle Swarms: From Dexterous Tentacles to Reconfigurable Carpets

2022

ACS Nano

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Microrobot swarms have promising prospects in biomedical applications ranging from targeted cargo delivery to minimally invasive surgery. However, such potential is constrained by the small output force and low efficiency of the current microrobot swarms. To address this challenge, we report a tentacle-like reconfigurable microrobot swarm by programming paramagnetic microparticles into reconfigurable carpets with numerous cilia. This wirelessly controlled microrobot swarm is constructed via a strong gradient magnetic field in combination with a programmable oscillating magnetic field. The gradient magnetic field is supplied by a permanent magnet, which enables fast formation of a microrobot swarm with powerful collective behaviors via cooperative physical structures within the swarm. The oscillating magnetic field is produced by a custom-built electromagnetic coil system, which is adopted as an actuation device for conducting dexterous manipulation via controllable oscillation motion. Using the proposed microrobot swarming strategy, a milligram-level magnetic carpet achieves a millinewton-level output force. By applying different types of magnetic fields, the magnetic carpet accomplishes dexterous manipulation tasks, lesion removal, and controllable drug diffusion with a high-efficiency response in microscale executions. The formation and control mechanisms of the microrobot swarm reported here provide a practical candidate for in vivo biomedical treatment.

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“…by the arrangement of the catalyst particles parallel to the magnetic field lines which often happens when magnetic particles deposit onto the surface [36,37].…”

Section: Deposition With Single Magnetmentioning

confidence: 99%

Electroless copper plating obtained by Selective Metallisation using a Magnetic Field (SMMF)

Danilova

Graves

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et al. 2021

Electrochimica Acta

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Targeting Behavior of Magnetic Particles Under Gradient Magnetic Fields Produced by Two Types of Permanent Magnets

Cited by 8 publications

References 26 publications

Investigation of Magnetic Nanoparticle Motion under a Gradient Magnetic Field by an Electromagnet

Investigation of Magnetic Nanoparticle Motion under a Gradient Magnetic Field by an Electromagnet

Collective Behaviors of Magnetic Microparticle Swarms: From Dexterous Tentacles to Reconfigurable Carpets

Electroless copper plating obtained by Selective Metallisation using a Magnetic Field (SMMF)

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