Stimuli‐Driven Insulator–Conductor Transition in a Flexible Polymer Composite Enabled by Biphasic Liquid Metal (Adv. Mater. 43/2021)

Liu, Huaizhi; Xin, Yumeng; Bisoyi, Hari Krishna; Peng, Yan; Zhang, Jiuyang; Li, Quan

doi:10.1002/adma.202170336

Cited by 20 publications

(30 citation statements)

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“…[ 26,27 ] However, because of the high surface tension of liquid metal, it often requires additional technologies to construct conductive metal‐polymer composites. [ 28–32 ] This will lead to large consumption of LM (>40 vol %), [ 30,33,34 ] weight increasing and complicated manufacture processes, which is difficult for mass‐production. Despite intensive efforts to develop lightweight liquid metal‐polymer composite, [ 11,35,36 ] 3D cross‐linked liquid metal distributions are still hard to construct in polymer and the formation process and mechanism of liquid metal networks in polymers is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Lightweight Liquid Metal‐Elastomer Foam with Smart Multi‐Function

Yang

et al. 2022

Adv Funct Materials

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Lightweight metal-polymer composited foam has drawn considerable attention in fields of wearable electronics, acoustic and electromagnetic shielding, automotive and aerospace manufacturing, owing to its unique advantages like electrical conductivity and mechanical properties. Herein, a facile strategy is studied for one-step fabrication of multifunctional liquid metal (LM) permeated expancel microspheres foam (EMLM foam) with controllable shape and size. Specifically, the formation process and mechanism of bicontinuous structure with polymer and liquid metal are explored by real-time monitoring and finite element simulation. Both experimental and simulating results confirmed a stable 3D metal interconnected network that can be constructed with lower limit of LM (3 vol.%). In addition, based on the unique features of reversible rigidity control, lightweight, electrical conductivity, and mechanical stability, the EMLM foam can exhibit intelligent performance in tunable acoustic, energy absorption, and thermal driving repair. Combined with EMLM foam's facile preparation process and versatility, it can provide the remarkable opportunity to develop the lightweight intelligent devices.

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Section: Introductionmentioning

confidence: 99%

Lightweight Liquid Metal‐Elastomer Foam with Smart Multi‐Function

Yang

et al. 2022

Adv Funct Materials

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“…Based on a dual‐phase liquid metal, researchers have also achieved a conductive‐insulation transition in a liquid metal–polymer composite system. [ 152 ] In the future, such material systems are expected to be applied in the storage and calculation of information.…”

Section: Response Properties Of Liquid Metal Smart Materialsmentioning

confidence: 99%

Liquid Metal Smart Materials toward Soft Robotics

Chen

Wang

Liu

et al. 2023

Advanced Intelligent Systems

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Unlike conventional rigid machines, soft robots generally have unique operation styles that rely heavily on soft matter engineering and smart material systems. Owing to the superior merits of both metals and fluids, liquid metal smart materials are increasingly being innovatively used as soft actuators and sensors to construct soft robots. To promote further development and prosperity in this field, this review organizes and summarizes the typical progress in liquid metal smart materials, with a special focus on their robotic response behaviors. In particular, the article emphasizes the concept of smart composite systems consisting of liquid metals and synergistic substances (e.g., solutions, particles, and polymers). The response behaviors of liquid metal smart materials under the actions of external factors (electricity, magnetism, ultrasound, light, heat, etc.) are examined and the smart properties occurring during these responses, such as motion, transformation, self‐organization, adaptive healing, and autonomous sensing, are identified. Furthermore, soft actuators, control systems, and robots based on liquid metal smart materials are summarized and elaborated upon. Finally, the potential directions worth pursuing and challenges are outlined. It is expected that this review will stimulate further investigations into liquid metal smart materials with the aim of building a new generation of soft robots.

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“…[ 40a ] Some works use LMPA to give mechanical tunability to electronic devices such as connecting wires and antennas in traditional circuits. Examples are diverse such as conductive fibers with shape memory effect, [ 73,92,122 ] conductive elastomers with specific mechanical properties such as damage‐insensitive, [ 106,130b ] polymer with a reversible electrical transition between insulator, [ 129,141 ] and conductor and antennas that can reconstruct stiffness and shape to adjust the working frequency. [ 142 ]…”

Section: Application Of Lmpa‐enabled Stiffness Tunable Materialsmentioning

confidence: 99%

Low Melting Point Alloys Enabled Stiffness Tunable Advanced Materials

Hao

Gao

et al. 2022

Adv Funct Materials

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Stiffness tunable advanced materials have demonstrated their superiority and versatility in diverse areas, while the global pursuit of reversible, intelligent, and fast response for stiffness regulation is growing radically, leaving great challenges for traditional materials. As newly emerging functional metal material, the low melting point alloys (LMPAs) have shown encouraging potential in developing various stiffness regulation strategies owing to their excellent physicochemical and mechanical properties. This article is dedicated to presenting a comprehensive review of the LMPA‐enabled stiffness tunable materials from the aspects of material system, regulation principle and method, capability enabling mechanisms, and application scenarios. First, according to the structural differences, three kinds of LMPA‐enabled stiffness tunable material systems are evaluated. Then, the regulation strategies are elaborated from the fundamental LMPA modifications to dynamical external field controls, and the mainstream stiffness regulation modes are also combed out. Following that, the diversified applications of LMPA enabled stiffness tunable materials are systematically summarized and discussed. Finally, a perspective interpretation of the potentials and challenges of LMPA‐enabled stiffness tunable materials is provided. This article is expected to be important for guiding the future design of smart materials, functional entities, transformable robots, etc.

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Stimuli‐Driven Insulator–Conductor Transition in a Flexible Polymer Composite Enabled by Biphasic Liquid Metal (Adv. Mater. 43/2021)

Cited by 20 publications

References 0 publications

Lightweight Liquid Metal‐Elastomer Foam with Smart Multi‐Function

Lightweight Liquid Metal‐Elastomer Foam with Smart Multi‐Function

Liquid Metal Smart Materials toward Soft Robotics

Low Melting Point Alloys Enabled Stiffness Tunable Advanced Materials

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