Actuating Soft Matter with Magnetic Torque

Erb, Randall M.; Martin, Joshua J.; Soheilian, Rasam; Pan, Chunzhou; Barber, Jabulani Randall

doi:10.1002/adfm.201504699

Cited by 217 publications

(210 citation statements)

References 199 publications

(242 reference statements)

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“…The magnetic field is a promising source not only because energy can be supplied remotely, but also because in many cases magnetic interactions help to keep the Brownian disorientation at bay thus offering a mechanism of control. As recently argued by Erb et al 21,. actuating strategies based on the use of magnetic fields offer the highest manipulation forces and torques over device length scales from sub-micrometres to millimetres.…”

mentioning

confidence: 62%

Magnetically controlled ferromagnetic swimmers

Hamilton

Petrov

Winlove

et al. 2017

Sci Rep

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Microscopic swimming devices hold promise for radically new applications in lab-on-a-chip and microfluidic technology, diagnostics and drug delivery etc. In this paper, we demonstrate the experimental verification of a new class of autonomous ferromagnetic swimming devices, actuated and controlled solely by an oscillating magnetic field. These devices are based on a pair of interacting ferromagnetic particles of different size and different anisotropic properties joined by an elastic link and actuated by an external time-dependent magnetic field. The net motion is generated through a combination of dipolar interparticle gradient forces, time-dependent torque and hydrodynamic coupling. We investigate the dynamic performance of a prototype (3.6 mm) of the ferromagnetic swimmer in fluids of different viscosity as a function of the external field parameters (frequency and amplitude) and demonstrate stable propulsion over a wide range of Reynolds numbers. We show that the direction of swimming has a dependence on both the frequency and amplitude of the applied external magnetic field, resulting in robust control over the speed and direction of propulsion. This paves the way to fabricating microscale devices for a variety of technological applications requiring reliable actuation and high degree of control.

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mentioning

confidence: 62%

Magnetically controlled ferromagnetic swimmers

Hamilton

Petrov

Winlove

et al. 2017

Sci Rep

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“…These rules imply that a biologically propelled microscopic biohybrid with a magnetic moment can be either pulled along the field gradient or guided along the field lines . In the simplest case, the magnetic moment lies parallel to the propulsion axis, as depicted in Figure .…”

Section: Fundamentalsmentioning

confidence: 99%

Biohybrid and Bioinspired Magnetic Microswimmers

Bente

Codutti

Bachmann

et al. 2018

Small

113

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Many motile microorganisms swim and navigate in chemically and mechanically complex environments. These organisms can be functionalized and directly used for applications (biohybrid approach), but also inspire designs for fully synthetic microbots. The most promising designs of biohybrids and bioinspired microswimmers include one or several magnetic components, which lead to sustainable propulsion mechanisms and external controllability. This Review addresses such magnetic microswimmers, which are often studied in view of certain applications, mostly in the biomedical area, but also in the environmental field. First, propulsion systems at the microscale are reviewed and the magnetism of microswimmers is introduced. The review of the magnetic biohybrids and bioinspired microswimmers is structured gradually from mostly biological systems toward purely synthetic approaches. Finally, currently less explored parts of this field ranging from in situ imaging to swarm control are discussed.

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“…Tissue actuation corresponds to a mechanical motion generated from the nanocomposite scaffold submitted to an external stimulus: magnetic field, electrical voltage, etc. Thus, whether by using magnetic NPs with their ability of induced motion upon SMF applied or electrically conductive nanomaterials (carbon‐based or gold NPs), their remote effects can be beneficial for muscle cell actuation or contraction …”

Section: Applications In Tissue Engineeringmentioning

confidence: 99%

Nanocomposite Polymer Scaffolds Responding under External Stimuli for Drug Delivery and Tissue Engineering Applications

Mertz

Harlepp

Goetz

et al. 2019

Advanced Therapeutics

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The blossoming development of nanomaterials and polymer science has opened the way toward new biocompatible scaffolds responding remotely to external stimuli (magnetic field, light, electric field). Such smart scaffolds are envisioned as new implantable tissues displaying multiple therapeutic and imaging functionalities. They hold great promises to achieve a controlled delivery of therapeutics for various diseases, or to ensure a stimuli‐induced cellular response for bone, cardiac, or muscle tissue engineering.

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Actuating Soft Matter with Magnetic Torque

Cited by 217 publications

References 199 publications

Magnetically controlled ferromagnetic swimmers

Magnetically controlled ferromagnetic swimmers

Biohybrid and Bioinspired Magnetic Microswimmers

Nanocomposite Polymer Scaffolds Responding under External Stimuli for Drug Delivery and Tissue Engineering Applications

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