Electrochemical graphene/carbon nanotube yarn artificial muscles

Hyeon, Jae Sang; Park, Jong Woo; Baughman, Ray H.; Kim, Seon Jeong

doi:10.1016/j.snb.2019.01.140

Cited by 52 publications

(28 citation statements)

References 33 publications

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“…Hyeon and colleagues used graphene specifically as a guest material to increase capacitance and improve actuation contraction, with a tensile stroke of approximately 19%. [ 355 ] Qiao leveraged a CNT‐reduced GO yarn to increase capacitance and enhance ion diffusion to optimize performance for low cost aqueous electrolytes. [ 356 ] In addition to CNTs, polymeric and polymer‐composite systems have been developed.…”

Section: Textile Actuators For Wearable Robotsmentioning

confidence: 99%

Textile Technology for Soft Robotic and Autonomous Garments

Sánchez¹,

Walsh²,

Wood³

2020

Adv Funct Materials

168

123

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Textiles have emerged as a promising class of materials for developing wearable robots that move and feel like everyday clothing. Textiles represent a favorable material platform for wearable robots due to their flexibility, low weight, breathability, and soft hand‐feel. Textiles also offer a unique level of programmability because of their inherent hierarchical nature, enabling researchers to modify and tune properties at several interdependent material scales. With these advantages and capabilities in mind, roboticists have begun to use textiles, not simply as substrates, but as functional components that program actuation and sensing. In parallel, materials scientists are developing new materials that respond to thermal, electrical, and hygroscopic stimuli by leveraging textile structures for function. Although textiles are one of humankind's oldest technologies, materials scientists and roboticists are just beginning to tap into their potential. This review provides a textile‐centric survey of the current state of the art in wearable robotic garments and highlights metrics that will guide materials development. Recent advances in textile materials for robotic components (i.e., as sensors, actuators, and integration components) are described with a focus on how these materials and technologies set the stage for wearable robots programmed at the material level.

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Section: Textile Actuators For Wearable Robotsmentioning

confidence: 99%

Textile Technology for Soft Robotic and Autonomous Garments

Sánchez¹,

Walsh²,

Wood³

2020

Adv Funct Materials

168

123

View full text Add to dashboard Cite

show abstract

“…[14,24,26,27] These electrodes remain conductive even at high strain and this is relevant if we consider that prestretching acrylic or silicone layers improves the mechanical properties of the DEA. [25,26] It is not yet clear if single-walled CNTs have better performances than multiwalled CNTs, but single-walled CNTs have been used in more studies compared to multi-walled, [14,26,27,31,32] with authors positive about their application in artificial muscle. Two potentially useful technical aspects involved in production of DEAs using CNTs seem to be the doping of the SWCNTs by nitric acid and using SRAMs instead of HYAMs.…”

Section: Combining Current Technologies For a Clinical Applicationmentioning

confidence: 99%

Dielectric Elastomer Actuators, Neuromuscular Interfaces, and Foreign Body Response in Artificial Neuromuscular Prostheses: A Review of the Literature for an In Vivo Application

Bruschi

Donati

Choong

et al. 2021

Adv Healthcare Materials

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The inability to replace human muscle in surgical practice is a significant challenge. An artificial muscle controlled by the nervous system is considered a potential solution for this. Here, this is defined as a neuromuscular prosthesis. Muscle loss and dysfunction related to musculoskeletal oncological impairments, neuromuscular diseases, trauma or spinal cord injuries can be treated through artificial muscle implantation. At present, the use of dielectric elastomer actuators working as capacitors appears a promising option. Acrylic or silicone elastomers with carbon nanotubes functioning as the electrode achieve mechanical performances similar to human muscle in vitro. However, mechanical, electrical, and biological issues have prevented clinical application to date. Here materials and mechatronic solutions are presented which can tackle current clinical problems associated with implanting an artificial muscle controlled by the nervous system. Progress depends on the improvement of the actuation properties of the elastomer, seamless or wireless integration between the nervous system and the artificial muscle, and on reducing the foreign body response. It is believed that by combining the mechanical, electrical, and biological solutions proposed here, an artificial neuromuscular prosthesis may be a reality in surgical practice in the near future.

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“…Electrical stimulus responsive actuators have a wide frequency spindle that allows it to bend at 0.1–30 Hz. Recently, the coiled GO/CNTs yarns made by the biscrolling method can produce 19% maximum tensile actuation ( Hyeon et al, 2019 ), and compared with an original CNT artificial muscle with a work capacity of 2.6 J/g, GO/CNTs actuator can produce approximately twice the tensile actuation force at the same voltage. Therefore, electric stimulus smart actuators can be used as an artificial muscle to imitate the shape deformation of muscle cells.…”

Section: Single Stimulus Response Smart Actuatorsmentioning

confidence: 99%

Smart Actuators Based on External Stimulus Response

Zheng

Jiang

et al. 2021

Front. Chem.

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Smart actuators refer to integrated devices that are composed of smart and artificial materials, and can provide actuation and dampening capabilities in response to single/multi external stimuli (such as light, heat, magnetism, electricity, humidity, and chemical reactions). Due to their capability of dynamically sensing and interaction with complex surroundings, smart actuators have attracted increasing attention in different application fields, such as artificial muscles, smart textiles, smart sensors, and soft robots. Among these intelligent material, functional hydrogels with fiber structure are of great value in the manufacture of smart actuators. In this review, we summarized the recent advances in stimuli-responsive actuators based on functional materials. We emphasized the important role of functional nano-material-based additives in the preparation of the stimulus response materials, then analyzed the driving response medium, the preparation method, and the performance of different stimuli responses in detail. In addition, some challenges and future prospects of smart actuators are reported.

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Electrochemical graphene/carbon nanotube yarn artificial muscles

Cited by 52 publications

References 33 publications

Textile Technology for Soft Robotic and Autonomous Garments

Textile Technology for Soft Robotic and Autonomous Garments

Dielectric Elastomer Actuators, Neuromuscular Interfaces, and Foreign Body Response in Artificial Neuromuscular Prostheses: A Review of the Literature for an In Vivo Application

Smart Actuators Based on External Stimulus Response

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