Highly Responsive Soft Electrothermal Actuator with High-Output Force Based on Polydimethylsiloxane (PDMS)-Coated Carbon Nanotube (CNT) Sponge

Zhou, Bangze; Aouraghe, Mohamed Amine; Chen, Wei; Xu, Fujun

doi:10.1021/acs.nanolett.3c01458

Cited by 14 publications

(4 citation statements)

References 61 publications

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“…Soft multi-layer actuators generate mechanical deformation with multiple degrees of freedom under external stimuli such as light, [1][2][3] electricity, [4][5][6] humidity, [7][8][9] heat, [10][11][12] and chemical potential, [13,14] etc. They have the advantages of simple structure, diverse forms of motion, strong environmental adaptability, and high safety.…”

Section: Introductionmentioning

confidence: 99%

Soft multi‐layer actuators integrated with the functions of electrical energy harvest and storage

Feng,

Zhou,

Peng

et al. 2024

Chemistry A European J

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Soft multi‐layer actuators are smart, lightweight, and flexible, which can be used in a wide range of fields such as artificial muscles, advanced medical devices, and wearable devices. The research on the actuation property of the soft actuators has made significant progress, paving the way for the controllable motions of the actuators. However, compared with the intelligence and adaptability of life in nature, these actuators still have the problem of insufficient intelligence. The phenomenon is reflected in a lack of continuous supply of energy. Therefore, it has become a development trend to combine functions such as energy harvesting, storage, and conversion with actuators to build intelligent actuators. This concept presents a synopsis of the advancements made in soft actuators that have been coupled with the capabilities of electrical energy harvesting and storage. The design concepts and typical applications of this soft smart actuators are introduced in detail. Finally, the future research directions and applications of smart actuators are prospected from our perspective.

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Section: Introductionmentioning

confidence: 99%

Soft multi‐layer actuators integrated with the functions of electrical energy harvest and storage

Feng,

Zhou,

Peng

et al. 2024

Chemistry A European J

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“…Soft actuators that can reversibly change their geometric shape, volume, size, or properties under various external stimuli have broad potential in many fields, including soft robots, wearable electronic devices, flexible sensors, energy harvesting, biomedical devices, and artificial intelligence. − Among these, soft actuators stimulated by factors such as light, , electricity, , temperature, , humidity, , and electro-ionic soft actuators exhibit activation and controllable actuation performance at low voltages. In recent years, electro-ionic soft actuators have attracted wide attention due to their lightweight, high flexibility, and simple manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Fast Responsive and High-Strain Electro-Ionic Soft Actuator Based on the 3D-Structure MXene-EGaIn/MXene Bilayer Composite Electrode

Chen,

Zhang,

et al. 2024

Langmuir

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Electro-ionic soft actuators have garnered significant attention owing to their promising applications in flexible electronics, wearable devices, and soft robotics. However, achieving high actuation performance (large bending strain and fast response time) of these soft actuators under low voltage has been challenging due to issues related to ion diffusion and accumulation. In this study, an electro-ionic soft actuator is fabricated using Ti 3 C 2 T x MXene and eutectic gallium− indium (EGaIn) composite material as the bilayer electrode and methylammonium formate/1-ethyl-3-methylimidazolium tetrafluoroborate/poly(vinylidene fluoride) (MAF-EMIMBF 4 /PVDF) as the ionic liquid-type electrolyte. The research results indicate that the prepared soft actuator exhibits excellent actuation performance with a peak-topeak displacement of 35 mm and a bending strain of 0.69% (a peak-to-peak strain of 1.38%) under a low voltage (3 V). The electroionic soft actuator shows a wide frequency range (0.1−10 Hz), fast response time (0.35 s), and a rise time of 7.5 s. Furthermore, it demonstrates good cyclic durability, with a retention rate of 92.5% of its performance for 10 000 cycles. These excellent performances are attributed to the 3D structure of the Ti 3 C 2 T x −EGaIn/Ti 3 C 2 T x bilayer composite electrode, as well as the characteristics of the low viscosity, high conductivity, small ion volume, and larger volume difference between cations and anions in MAF ionic liquid. The high-performance electro-ionic soft actuator can be used in various fields such as artificial muscles, tactile devices, and soft robots.

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“…Previously reported twisted and coiled CNT yarn artificial muscles demonstrated impressive torsional and tensile strokes. − However, the total output work of CNT-based muscles is low, since they cannot be easily scaled up, preventing them from matching the functionality of natural muscles. CNT-based muscles can be powered using various methods, including electrochemical − and electrothermal − energy input and solvent absorption . Electrothermal- and solvent-absorption-powered muscles face practical challenges such as high operating voltage and slow actuation rates, while electrochemically powered CNT muscles offer advantages such as low operating voltage and negligible thermal effects. , Moreover, the energy conversion efficiency of electrochemical muscle is relatively high and is not limited by the Carnot efficiency for thermal muscles.…”

Section: Introductionmentioning

confidence: 99%

Fast and Strong Carbon Nanotube Yarn Artificial Muscles by Electro-osmotic Pump

Hu,

Zhang,

Liu

et al. 2023

ACS Nano

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Previous electrochemically powered yarn muscles cannot be usefully operated between extreme negative and extreme positive potentials, since generated stresses during anion injection and cation injection partially cancel because they are in the same direction. We here report an ionomer-infiltrated hybrid carbon nanotube (CNT) yarn muscle that shows unipolar stress behavior in the sense that stress generation between extreme potentials is additive, resulting in an enhanced stress generation. Moreover, the stress generated by this muscle unexpectedly increases with the potential scan rate, which contradicts the fact that scan-rate-induced stress decreases for neat CNT muscles. It is revealed by the electro-osmotic pump effect that the effective ion size injected into the muscle increases with an increase in the scan rate. We demonstrate an electrochemically powered gel-elastomer-yarn muscle adhesive that generates and delivers muscle-contraction-mimicking stimulation to a target tissue.

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Highly Responsive Soft Electrothermal Actuator with High-Output Force Based on Polydimethylsiloxane (PDMS)-Coated Carbon Nanotube (CNT) Sponge

Cited by 14 publications

References 61 publications

Soft multi‐layer actuators integrated with the functions of electrical energy harvest and storage

Soft multi‐layer actuators integrated with the functions of electrical energy harvest and storage

Fast Responsive and High-Strain Electro-Ionic Soft Actuator Based on the 3D-Structure MXene-EGaIn/MXene Bilayer Composite Electrode

Fast and Strong Carbon Nanotube Yarn Artificial Muscles by Electro-osmotic Pump

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