Combined three dimensional locomotion and deformation of functional ferrofluidic robots

Fan, Xinjian; Zhang, Yunfei; Wu, Zhengnan; Xie, Hui; Sun, Lining; Chen, Tao; Yang, Zhan

doi:10.1039/d3nr02535g

Cited by 2 publications

(3 citation statements)

References 48 publications

(67 reference statements)

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“…Superparamagnetic materials are commonly utilized in the fabrication of ferrofluidic robots, which are alternatively referred to as active drops owing to their liquid properties and capacity to maneuver under the influence of an external magnetic field [44,45]. Ferrofluidic robots offer superior capabilities over elastomeric-based soft robots for navigating narrow and confined spaces, thereby minimizing damage to surrounding biological tissues during biomedical procedures and achieving the least invasive approach [46,47].…”

Section: Magnetic Materialsmentioning

confidence: 99%

A Survey of Recent Developments in Magnetic Microrobots for Micro-/Nano-Manipulation

Xu,

2024

Micromachines

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Magnetically actuated microrobots have become a research hotspot in recent years due to their tiny size, untethered control, and rapid response capability. Moreover, an increasing number of researchers are applying them for micro-/nano-manipulation in the biomedical field. This survey provides a comprehensive overview of the recent developments in magnetic microrobots, focusing on materials, propulsion mechanisms, design strategies, fabrication techniques, and diverse micro-/nano-manipulation applications. The exploration of magnetic materials, biosafety considerations, and propulsion methods serves as a foundation for the diverse designs discussed in this review. The paper delves into the design categories, encompassing helical, surface, ciliary, scaffold, and biohybrid microrobots, with each demonstrating unique capabilities. Furthermore, various fabrication techniques, including direct laser writing, glancing angle deposition, biotemplating synthesis, template-assisted electrochemical deposition, and magnetic self-assembly, are examined owing to their contributions to the realization of magnetic microrobots. The potential impact of magnetic microrobots across multidisciplinary domains is presented through various application areas, such as drug delivery, minimally invasive surgery, cell manipulation, and environmental remediation. This review highlights a comprehensive summary of the current challenges, hurdles to overcome, and future directions in magnetic microrobot research across different fields.

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Section: Magnetic Materialsmentioning

confidence: 99%

A Survey of Recent Developments in Magnetic Microrobots for Micro-/Nano-Manipulation

Xu,

2024

Micromachines

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“…While droplet robots propelled by a 3D magnetic field face limitations in selectively driving multiple droplet robots within the same space due to the global nature of the magnetic field itself, as previously discussed (46,47), the proposed bimodal actuation strategy overcomes this challenge. Illustrated in Fig.…”

Section: Potential Application Demonstration Of the Dropletmentioning

confidence: 99%

“…Figure 1B showcases various functionalities of droplets, including traversing complex obstacles, self-assembling into collectives for levitation tasks, or acting as actuators in jellyfish-like structures, thereby achieving sunlight-driven locomotion. Compared to conventional ferrofluid droplets controlled solely by magnetic fields (31)(32)(33)(34)(35)(36)(46)(47)(48), the utilization of coupling fields in magnetic droplets yields more intricate motion patterns and collective behaviors. This advancement substantially broadens the potential applications of droplet-based robots within the realm of miniature soft robotics.…”

Section: Introductionmentioning

confidence: 99%

Individual and collective manipulation of multifunctional bimodal droplets in three dimensions

Sun,

Park

et al. 2024

Sci. Adv.

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Spatiotemporally controllable droplet manipulation is vital across numerous applications, particularly in miniature droplet robots known for their exceptional deformability. Despite notable advancements, current droplet control methods are predominantly limited to two-dimensional (2D) deformation and motion of an individual droplet, with minimal exploration of 3D manipulation and collective droplet behaviors. Here, we introduce a bimodal actuation strategy, merging magnetic and optical fields, for remote and programmable 3D guidance of individual ferrofluidic droplets and droplet collectives. The magnetic field induces a magnetic dipole force, prompting the formation of droplet collectives. Simultaneously, the optical field triggers isothermal changes in interfacial tension through Marangoni flows, enhancing buoyancy and facilitating 3D movements of individual and collective droplets. Moreover, these droplets can function autonomously as soft robots, capable of transporting objects. Alternatively, when combined with a hydrogel shell, they assemble into jellyfish-like robots, driven by sunlight. These findings present an efficient strategy for droplet manipulation, broadening the capabilities of droplet-based robotics.

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Combined three dimensional locomotion and deformation of functional ferrofluidic robots

Abstract: Magnetic-controlled ferrofluidic robots demonstrate exceptional precision in efficiently navigating complex 3D paths, which enhances their applicability across diverse fields, including medicine, micromanipulation, and bioengineering.

Cited by 2 publications

References 48 publications

A Survey of Recent Developments in Magnetic Microrobots for Micro-/Nano-Manipulation

A Survey of Recent Developments in Magnetic Microrobots for Micro-/Nano-Manipulation

Individual and collective manipulation of multifunctional bimodal droplets in three dimensions

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