Controllable Magnetoactive Polymer Conduit

Diermeier, Andreas; Sindersberger, Dirk; Krenkel, L.; Rosell, X. C.; Monkman, Gareth J.

doi:10.2174/1874155x01812010192

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…Several studies consider the control of the local magnetic loading as a key factor for the development of advanced actuation mechanisms and efficient miniature MAE actuators. [1,11] One strategy to achieve local loading is the use of the field gradient that naturally occurs with increasing distance from permanent magnets [12,13] or electromagnets, [14,15] for example. The local control of an applied magnetic field, however, can involve complex and space-consuming experimental setups.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Performance of Soft Actuators with Magnetic Patterns

Hermann,

Butaud,

Manceau

et al. 2024

Adv Materials Technologies

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This study presents a concept for a straightforward method to enhance the actuation performances of magneto‐active elastomer membranes. The concept is based on a characteristic magnetization pattern and offers a solution to two major difficulties in the actuation of thin and mechanically soft magnetic actuators: the localization of actuation forces and the self‐demagnetization. After the magnetization process, the membrane presents two regions with an oppositely oriented out‐of‐plane magnetization. The magnetized regions are separated by a transition zone which is called magnetic pole transition. Experimental investigations reveal a high magnetic flux density near the pole transition—even in the center of bidirectionally magnetized membranes—whereas the magnetic flux density of a uniformly magnetized membrane decreases toward the center. In additional experiments, membranes with both magnetization patterns are actuated by stiff permanent magnets. The resulting out‐of‐plane displacement of the bidirectionally magnetized membrane exceeds the displacement of the unidirectionally magnetized membrane by far. The investigations demonstrate that this enhancement stems from the presence of the magnetic pole transition. All experiments are reproduced using magnetic and magneto‐mechanical numerical models; a good accordance between the results is achieved.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Performance of Soft Actuators with Magnetic Patterns

Hermann,

Butaud,

Manceau

et al. 2024

Adv Materials Technologies

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“…MAEs are composite materials comprising an elastomer matrix and suspended magnetically-susceptible microparticles [15]. Such materials possess the characteristics of both elastomers (low mass, elastic), and ferromagnetic materials (dynamic response to application of magnetic fields).…”

Section: Introductionmentioning

confidence: 99%

“…MAE has also been used in the fabrication of actuators [15,20,21] for applications such as robotics. For instance, Zimmermann et al proposed an undulatory moving mechanism of MAE strip by external electromagnet-generated sinusoidal magnetic waves [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A Magneto-Active Elastomer Crawler with Peristaltic and Caterpillar Locomotion Patterns

2021

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In this work we present a soft crawler fabricated using a magneto-active elastomer. The crawler is controlled by an external magnetic field to produce two locomotion patterns: peristaltic and caterpillar crawling. Due to its structural simplicity, low mass, wirelessly controlled actuation and compliant body the design of this crawler has the potential to address the key challenges faced by existing crawling robots. Experimental data were gathered to evaluate the performance of the crawler locomotion in a pipe. The results validated the mathematical models proposed to estimate the distance traveled by the crawler. The crawler shows potential for use in exploration of confined spaces.

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