Super tough magnetic hydrogels for remotely triggered shape morphing

Tang, Jing-Shi; Tong, Zongfei; Xia, Yukun; Liu, Ming; Lv, Zengyao; Gao, Yang; Lu, Tongqing; Xie, Shejuan; Pei, Yongmao; Fang, Daining; Wang, T. J.

doi:10.1039/c8tb00568k

Cited by 74 publications

(45 citation statements)

References 55 publications

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“…Examples have polymer matrices that include AAm, and polysaccharides like carboxymethylcellulose with reactive groups and the most common cross‐linkable magnetic particles are functionalized cobalt ferrite (CoFe 2 O 4 ) and hematite . Other multiresponsive, anisotropic, tough, and self‐healing magnetic gels require more complex architectures.…”

Section: Principlesmentioning

confidence: 99%

Transformer Hydrogels: A Review

Erol

Pantula

Liu

et al. 2019

Adv Materials Technologies

221

211

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Hydrogels, which are hydrophilic soft porous networks, are an important class of materials of broad relevance to bioanalytical chemistry, soft‐robotics, drug delivery, and regenerative medicine. Transformer hydrogels are micro‐ and mesostructured hydrogels that display a dramatic transformation of shape, form, or dimension with associated changes in function, due to engineered local variations such as in swelling or stiffness, in response to external controls or environmental stimuli. This review describes principles that can be utilized to fabricate transformer hydrogels such as by layering, patterning, or generating anisotropy, and gradients. Transformer hydrogels are classified based on their responsivity to different stimuli such as temperature, electromagnetic fields, chemicals, and biomolecules. A survey of the current research progress suggests applications of transformer hydrogels in biomimetics, soft robotics, microfluidics, tissue engineering, drug delivery, surgery, and biomedical engineering.

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Section: Principlesmentioning

confidence: 99%

Transformer Hydrogels: A Review

Erol

Pantula

Liu

et al. 2019

Adv Materials Technologies

221

211

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“…Our strategy is to develop a magnetic-responsive CAN solder which can provide heat due to the widely-known magnetothermal effect. 33 – 35 Consequently, when exposed to an alternating magnetic field (AMF), bond exchange reactions can be induced (by the magnetothermal effect) at the interface between the solder and the to-be-welded pieces, which results in rapid welding of the large-sized bulk CAN blocks. As a demonstration, we prepared Fe 3 O 4 nanoparticle dispersed polyurethane (PU) CANs.…”

Section: Introductionmentioning

confidence: 99%

A magnetic solder for assembling bulk covalent adaptable network blocks

Zhang

et al. 2020

Chem. Sci.

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“…These grippers were positioned using external fields, and then actuated to grasp by changing the local temperature. Similarly, Tang et al (2018) used the heating effect of an alternating magnetic field on Fe 3 O 4 to curl and grasp with a hydrogel-based sME. For terrestrial locomotion, researchers developed soft inchworminspired robots, capable of demonstrating an inchworm-like gait.…”

Section: Smes and Soft Robotic Applicationsmentioning

confidence: 99%

A Review of Magnetic Elastomers and Their Role in Soft Robotics

2020

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Soft robotics as a field of study incorporates different mechanisms, control schemes, as well as multifunctional materials to realize robots able to perform tasks inaccessible to traditional rigid robots. Conventional methods for controlling soft robots include pneumatic or hydraulic pressure sources, and some more recent methods involve temperature and voltage control to enact shape change. Magnetism was more recently introduced as a building block for soft robotic design and control, with recent publications incorporating magnetorheological fluids and magnetic particles in elastomers, to realize some of the same objectives present in more traditional soft robotics research. This review attempts to organize and emphasize the existing work with magnetism and soft robotics, specifically studies on magnetic elastomers, while highlighting potential avenues for further research enabled by these advances.

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Super tough magnetic hydrogels for remotely triggered shape morphing

Abstract: Soft 2D structures based on tough magnetic hydrogels can be remotely triggered to evolve into 3D shapes in a magnetic field.

Cited by 74 publications

References 55 publications

Transformer Hydrogels: A Review

Transformer Hydrogels: A Review

A magnetic solder for assembling bulk covalent adaptable network blocks

A Review of Magnetic Elastomers and Their Role in Soft Robotics

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