Cellulose‐Based Soft Actuators

Chen, Wenbo; Sun, Bianjing; Biehl, Philip; Zhang, Kai

doi:10.1002/mame.202200072

Cited by 30 publications

(28 citation statements)

References 127 publications

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“…Notably, the strategy of using a single-layer structure has also been proposed [ 15 , 16 ]. Instead of incorporating multiple different materials into a multilayer structure, a gradient in the material properties of a single-layer structure can be used to produce a stress gradient along the thickness of the material [ 1 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Strategies for Developing Shape-Shifting Behaviours and Potential Applications of Poly (N-vinyl Caprolactam) Hydrogels

et al. 2023

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Stimuli-responsive hydrogels are one type of smart hydrogel, which can expand/contract in water according to changes in the surrounding environment. However, it is difficult to develop flexible shapeshifting behaviours by using a single hydrogel material. This study exploited a new method to utilise single and bilayer structures to allow hydrogel-based materials to exhibit controllable shape-shifting behaviours. Although other studies have demonstrated similar transformation behaviours, this is the first report of such smart materials developed using photopolymerised N-vinyl caprolactam (NVCL)-based polymers. Our contribution provides a straightforward method in the fabrication of deformable structures. In the presence of water, the bending behaviours (vertex-to-vertex and edge-to-edge) were achieved in monolayer squares. By controlling the content and combination of the NVCL solutions with elastic resin, the bilayer strips were prepared. The expected reversible self-bending and self-helixing behaviours were achieved in specific types of samples. In addition, by limiting the expansion time of the bilayer, the layered flower samples exhibited predictable self-curving shape transformation behaviour in at least three cycles of testing. These structures displayed the capacity of self-transformation, and the value and functionality of the produced components are reflected in this paper.

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Section: Introductionmentioning

confidence: 99%

Strategies for Developing Shape-Shifting Behaviours and Potential Applications of Poly (N-vinyl Caprolactam) Hydrogels

et al. 2023

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“…Soft robots employ clever solutions based on smart materials that can sense and act in order to further simplify the design and boost functionality. [9][10][11] Magnetically responsive actuators are particularly intriguing among the several conceivable types of devices and actuation modes since they are quick, contactless, and powered by magnetic fields that may be used safely around people. [12][13][14][15] For minimally invasive medical devices, contactless control makes it possible to operate untethered equipment in small places.…”

Section: Introductionmentioning

confidence: 99%

“…Soft robots employ clever solutions based on smart materials that can sense and act in order to further simplify the design and boost functionality. [ 9–11 ]…”

Section: Introductionmentioning

confidence: 99%

Soft Magneto‐Responsive Shape Memory Foam Composite Actuators

Dezaki

Bodaghi

2022

Macro Materials & Eng

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Soft magnetic composites are exceptional because they can be controlled remotely, move quickly, conform to hard things, and interact with people safely. However, even with all these features, magnetic elastomers suffer a lack of stability due to the high softness of the elastomer. This issue affects their controllability and repeatability. This article introduces a novel conceptual design of magneto‐responsive shape memory polyurethane (SMP) foam composites with high stability and reversibility. The fabrication technique is based on the silicone resins filled with strontium ferrite magnetic particles and a thin SMP foam placed onto one side. Material properties, room‐temperature shape recovery features, and magnetization conditions necessary for the process are determined by experimental studies of composite actuators. As a result, a workable, light, stable, soft composite gripper with programmable magnetic patterns is created, which can carry out activities like grabbing, holding, and moving objects in horizontal and vertical directions when a low magnetic field is applied. The SMP foam increases the contact surface and decreases the weight by up to three times providing better stability compared to the magnetic elastomer without SMP foam. The shape‐recoverable gripper with a small contract area can lift objects eight times heavier than its weight.

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“…As a type of smart device, actuators can quickly respond to external stimuli such as humidity, 4 heat, 5 light, 6 magnetic field, 7 and chemicals 8 . Inspired by these unique properties, various types of actuators based on polymers, carbon‐based materials, and hydrogels have been designed and constructed to be applied in the fields of environment perception, target transportation, and bionic robotics 9–13 . Transparency plays an important role in the practical application of soft robotics, such as bionic camouflage and perspective ability.…”

Section: Introductionmentioning

confidence: 99%

“…constructed to be applied in the fields of environment perception, target transportation, and bionic robotics. [9][10][11][12][13] Transparency plays an important role in the practical application of soft robotics, such as bionic camouflage and perspective ability. Therefore, transparent actuators have gradually developed into an important branch of smart actuators.…”

mentioning

confidence: 99%

All polymer‐based transparent composites for electrothermal actuator and supercapacitor

Bai

Zhou

et al. 2022

J of Applied Polymer Sci

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With the rapid development of smart devices, multifunctional integrated systems are greatly developed. Although several multifunctional devices integrated with functions of actuation, sensing, and energy storage have been successfully fabricated, most of these integrated multifunctional systems are opaque. Here, all polymer‐based transparent composites are proposed for the electrothermal actuator, supercapacitor, and intelligent integrated electronic system. The transmittances of the polyaniline@poly(3, 4‐ethylene dioxythiophene): poly(styrenesulfonate)/polyethylene terephthalate/polyethylene hierarchical composites with transmittance over 40% are prepared by the facile method of in‐situ polymerization and “cut‐paste” process, which can be directly used as transparent actuators as well as electrodes for transparent supercapacitors. The transparent actuator exhibits large bending deformation (>0.8 cm−1) and long‐term repeatability under electrical stimulation. Also, the transparent supercapacitor presents a high areal capacitance of 9.9 mF cm−2 and excellent cycling stability. Due to the above advantages, a series of practical applications are designed, such as biomimetic transparent grippers, flexible supercapacitor arrays, and so forth. Finally, an intelligent integrated electronic system with intelligent electrical‐controlled switches and supercapacitor arrays is successfully constructed to demonstrate the practical application of functional polymer film in smart devices.

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Cellulose‐Based Soft Actuators

Cited by 30 publications

References 127 publications

Strategies for Developing Shape-Shifting Behaviours and Potential Applications of Poly (N-vinyl Caprolactam) Hydrogels

Strategies for Developing Shape-Shifting Behaviours and Potential Applications of Poly (N-vinyl Caprolactam) Hydrogels

Soft Magneto‐Responsive Shape Memory Foam Composite Actuators

All polymer‐based transparent composites for electrothermal actuator and supercapacitor

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