Bio‐Inspired Soft‐Rigid Hybrid Smart Artificial Muscle Based on Liquid Crystal Elastomer and Helical Metal Wire (Small 17/2023)

Zhao, Limeng; Tian, Hongmiao; Liu, Haoran; Zhang, Weitian; Zhao, Fabo; Song, Xiaowen; Shao, Jinyou

doi:10.1002/smll.202370113

Cited by 3 publications

(1 citation statement)

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“…Actuators are devices capable of converting energy into motion, [47][48][49] offering significant potential in controlling critical equipment and material transport. By developing an actuator suitable for operation in the oil phase, the efficiency and convenience of such systems can be greatly enhanced.…”

Section: Resultsmentioning

confidence: 99%

Photothermal Conversion of the Oleophilic PVDF/Ti₃C₂T_x Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Chen,

Zhang,

et al. 2024

Small

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Various physical and chemical reaction processes occur in non‐aqueous liquid systems, particularly in oil phase systems. Therefore, achieving efficient, accurate, controllable, and cost‐effective movement and transfer of substances in the oil phase is crucial. Liquid‐phase photothermal actuators (LPAs) are commonly used for material transport in liquid‐phase systems due to their remote operability and precise control. However, existing LPAs typically rely on materials like hydrogels and flexible polymers, commonly unsuitable for non‐aqueous liquids. Herein, a 3D porous poly(vinylidene fluoride) (PVDF)/Ti3C2Tx actuator is developed using a solvent displacement method. It demonstrates directional movement and controlled material transport in non‐aqueous liquid systems. When subject to infrared light irradiation (2.0 W cm−2), the actuator achieves motion velocities of 7.3 and 6 mm s−1 vertically and horizontally, respectively. The actuator's controllable motion capability is primarily attributed to the foam's oil‐wettable properties, 3D porous oil transport network, and the excellent photothermal conversion performance of Ti3C2Tx, facilitating thermal diffusion and the Marangoni effect. Apart from multidimensional directions, the actuator enables material delivery and obstacle avoidance by transporting and releasing target objects to a predetermined position. Hence, the developed controllable actuator offers a viable solution for effective motion control and material handling in non‐aqueous liquid environments.

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Section: Resultsmentioning

confidence: 99%

Photothermal Conversion of the Oleophilic PVDF/Ti₃C₂T_x Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Chen,

Zhang,

et al. 2024

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Dynamic Covalent Bonded Gradient Structured Actuators with Mechanical Robustness and Self‐Healing Ability

Yu,

Li,

Yang

et al. 2024

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Flexible actuators with excellent adaptability and interaction safety have a wide range of application prospects in many fields. However, current flexible actuators have problems such as fragility and poor actuating ability. Here, inspired by the features of nacre structure, a gradient structured flexible actuator is proposed with mechanical robustness and self‐healing ability. By introducing dynamic boronic ester bonds at the interface between MXene nanosheets and epoxy natural rubber matrix, the resulting nanocomposites with ordered micro‐nano structures exhibit excellent tensile strength (25.03 MPa) and satisfactory repair efficiency (81.2%). In addition, the gradient distribution structure of MXene nanosheets endows the actuator with stable photothermal conversion capability, which can quickly respond to near‐infrared light stimulation. The interlayer dynamic covalent bond crosslinking enables good response speed after multiple bending and is capable of functional self‐healing after damage. This work introduces gradient structure and dynamic covalent bonding into flexible actuators, which provides a reference for the fabrication of self‐healing soft robots, wearable, and other healable functional materials.

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Tailored diffractions of asymmetric columns and symmetric rows in two-dimensional multi-element phase gratings

Hua¹,

Wu²

2023

Opt. Express

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Two-dimensional multi-element phase gratings can be engineered to show an even symmetry along one direction while an odd symmetry along the other direction in terms of offset refractive indices in each unit cell. The interplay of such even and odd symmetries has been explored to tailor diffraction columns and rows on demand by making offset refractive indices to satisfy specific requirements and hence attain different types of destructive interference. The resultant tailoring effects include the directional column elimination, the grouped column elimination, and the directional column selection as well as the natural row absence, the grouped row elimination, and the central row selection.

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Bio‐Inspired Soft‐Rigid Hybrid Smart Artificial Muscle Based on Liquid Crystal Elastomer and Helical Metal Wire (Small 17/2023)

Cited by 3 publications

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Photothermal Conversion of the Oleophilic PVDF/Ti₃C₂T_x Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Photothermal Conversion of the Oleophilic PVDF/Ti₃C₂T_x Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Dynamic Covalent Bonded Gradient Structured Actuators with Mechanical Robustness and Self‐Healing Ability

Tailored diffractions of asymmetric columns and symmetric rows in two-dimensional multi-element phase gratings

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Bio‐Inspired Soft‐Rigid Hybrid Smart Artificial Muscle Based on Liquid Crystal Elastomer and Helical Metal Wire (Small 17/2023)

Cited by 3 publications

References 0 publications

Photothermal Conversion of the Oleophilic PVDF/Ti3C2Tx Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Photothermal Conversion of the Oleophilic PVDF/Ti3C2Tx Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Dynamic Covalent Bonded Gradient Structured Actuators with Mechanical Robustness and Self‐Healing Ability

Tailored diffractions of asymmetric columns and symmetric rows in two-dimensional multi-element phase gratings

Contact Info

Product

Resources

About

Photothermal Conversion of the Oleophilic PVDF/Ti₃C₂T_x Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator

Photothermal Conversion of the Oleophilic PVDF/Ti₃C₂T_x Porous Foam Enables Non‐Aqueous Liquid System Applicable Actuator