Bio-inspired fluorescence color-tunable soft actuators with a self-healing and reconfigurable nature

He, Meng; Yang, Xiao; Wang, Yinzhi; Wang, Chao; Ye, W.; Ma, Fulong; Han, Tianyu; Qi, Jiwei

doi:10.1016/j.mtchem.2022.100855

Cited by 5 publications

(5 citation statements)

References 74 publications

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“…Very recently, Meng et al reported a bioinspired material which combines fluorescence color-tunable, shape-memory, and self-healing properties triggered by temperature. 311 In addition, this material showed outstanding tensile properties with a breaking tensile value of 1600%. In this work, the fluorescence color change was given by the photophysical effect known as aggregation-induced emission (AIE), where the luminescence of aggregation-induced emission agents (AIEgens) is activated by the formation of aggregates.…”

Section: Self-healing Thermal-actuatorsmentioning

confidence: 97%

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Self-Healing Polymeric Soft Actuators

et al. 2022

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Natural evolution has provided multicellular organisms with sophisticated functionalities and repair mechanisms for surviving and preserve their functions after an injury and/or infection. In this context, biological systems have inspired material scientists over decades to design and fabricate both self-healing polymeric materials and soft actuators with remarkable performance. The latter are capable of modifying their shape in response to environmental changes, such as temperature, pH, light, electrical/magnetic field, chemical additives, etc. In this review, we focus on the fusion of both types of materials, affording new systems with the potential to revolutionize almost every aspect of our modern life, from healthcare to environmental remediation and energy. The integration of stimuli-triggered selfhealing properties into polymeric soft actuators endow environmental friendliness, cost-saving, enhanced safety, and lifespan of functional materials. We discuss the details of the most remarkable examples of self-healing soft actuators that display a macroscopic movement under specific stimuli. The discussion includes key experimental data, potential limitations, and mechanistic insights. Finally, we include a general table providing at first glance information about the nature of the external stimuli, conditions for self-healing and actuation, key information about the driving forces behind both phenomena, and the most important features of the achieved movement. CONTENTS AH2.5. Self-Healing Electric Actuators AU 2.6. Self-Healing pH, Mechanical, and Redox Actuators BC 3. Tabular Overview BE 4.

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Section: Self-healing Thermal-actuatorsmentioning

confidence: 97%

Section: Self-healing Polymeric Actuatorsmentioning

confidence: 99%

Self-Healing Polymeric Soft Actuators

et al. 2022

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“…A diverse range of soft actuators capable of tuning both color and shape deformations (or locomotion) have been developed, indicating potential for usages in domains like soft robotics and biomedical appliances [ 79 ]. For instance, bioinspired fluorescence color-tunable soft actuators have been developed that are endowed with self-healing properties, reconfigurable nature, and shape memory performance [ 80 ]. One of the challenges in the development of MXene-centered soft actuators with angle-independent structural colors lies in achieving color-tuning capabilities that rival the robustness of natural systems, such as chameleons.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

MXenes for Bioinspired Soft Actuators: Advancements in Angle-Independent Structural Colors and Beyond

Iravani,

Varma

2024

Nano-Micro Lett.

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Soft actuators have garnered substantial attention in current years in view of their potential appliances in diverse domains like robotics, biomedical devices, and biomimetic systems. These actuators mimic the natural movements of living organisms, aiming to attain enhanced flexibility, adaptability, and versatility. On the other hand, angle-independent structural color has been achieved through innovative design strategies and engineering approaches. By carefully controlling the size, shape, and arrangement of nanostructures, researchers have been able to create materials exhibiting consistent colors regardless of the viewing angle. One promising class of materials that holds great potential for bioinspired soft actuators is MXenes in view of their exceptional mechanical, electrical, and optical properties. The integration of MXenes for bioinspired soft actuators with angle-independent structural color offers exciting possibilities. Overcoming material compatibility issues, improving color reproducibility, scalability, durability, power supply efficiency, and cost-effectiveness will play vital roles in advancing these technologies. This perspective appraises the development of bioinspired MXene-centered soft actuators with angle-independent structural color in soft robotics.

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“…Cuttlefish, octopus, and squid are typical examples that have the versatile capability to use body shapes and coloration to avoid predators. This unique ability has greatly inspired researchers working to develop colortunable soft actuators [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Bio-Inspired Hydrogel–Elastomer Actuator with Bidirectional Bending and Dynamic Structural Color

Xia,

Meng,

et al. 2023

Molecules

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In nature, some creatures can change their body shapes and surface colors simultaneously to respond to the external environments, which greatly inspired researchers in the development of color-tunable soft actuators. In this work, we present a facile method to prepare a smart hydrogel actuator that can bend bidirectionally and change color simultaneously, just like an octopus. The actuator is fabricated by elastomer/hydrogel bilayer and the hydrogel layer was decorated with thermoresponsive microgels as the photonic crystal blocks. Compared with the previously reported poly(N-isopropylacrylamide) hydrogel-based bilayer hydrogel actuators, which are generally limited to one-directional deformation, the elastomer/hydrogel bilayer actuator prepared in our work exhibits unique bidirectional bending behavior in accordance with the change of structural color. The bending degrees can be changed from −360° to 270° in response to solution temperatures ranging from 20 °C to 60 °C. At the same time, the surface color changes from red to green, and then to blue, covering the full visible light spectrum. The bending direction and degree of the hydrogel actuator can easily be adjusted by tuning the layer thickness ratio of the elastomer/hydrogel or the composition of the hydrogel. The color-tunable hydrogel-elastomer actuator reported in this work can achieve both programmable deformations and color-changing highly resembling the natural actuating behaviors of creatures.

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Bio-inspired fluorescence color-tunable soft actuators with a self-healing and reconfigurable nature

Cited by 5 publications

References 74 publications

Self-Healing Polymeric Soft Actuators

Self-Healing Polymeric Soft Actuators

MXenes for Bioinspired Soft Actuators: Advancements in Angle-Independent Structural Colors and Beyond

Bio-Inspired Hydrogel–Elastomer Actuator with Bidirectional Bending and Dynamic Structural Color

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