Hierarchical electrospun shape memory composite fibers as self-sensory actuators

Shen, Wei; Luo, Hongsheng; Su, Junzhao; Hu, Sheng; Yi, Guobin

doi:10.1016/j.matlet.2023.133841

Cited by 9 publications

(9 citation statements)

References 5 publications

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“…The complex coiled structure also limits the continuous preparation of perception- actuation integrated artificial muscle fibers. At present, two main structural designs are used to prepare perception-actuation integrated artificial muscle fibers; one is the composite structure, 30,32 and the other is the coaxial structure. 24,33 Fishing line (nylon-6,6) has proven to be one of the superior actuation materials in 2014; 1 therefore, developed nylon/metal composite yarn with excellent electrical and mechanical properties is expected to be one of the optimal raw materials for the preparation of perception-actuation integrated artificial muscle fibers (Figure 5a).…”

Section: Coiled Artificial Muscle Fibersmentioning

confidence: 99%

“…Yi's group also demonstrated that the CNTs deposited directly onto the fiber surface could enable artificial muscle fibers to achieve a self-sensing function (Figure 5e,f). 32 However, hysteresis existed in the self-sensing signal of the perception-actuation integrated artificial muscle fiber prepared by simple deposition of the AgNWs or the CNT sensing unit onto the fiber surface. Hysteresis means that one value of relative resistance change may correspond to two or more different positional states in an actuation cycle, thus resulting in failure to react to the working position of the fibers by the resistance change value.…”

Section: Coiled Artificial Muscle Fibersmentioning

confidence: 99%

“…The actuation structures of recently developed perception-actuation integrated artificial muscle fibers are mainly linear, , twisted, , and coiled, ,, and the functionally integrated structures mainly consist of a composite structure (all-in-one designed sensing and actuating units) , and a coaxial structure (independently designed sensing and actuating units). , The improvement of both perception and actuation performance relies on a rational design strategy for the actuation structure and functionally integrated structure. The coiled structure serves as a performance “amplifier”, − which generally provides a larger contractile stroke for the artificial muscle fiber than the untwisted and twisted structures.…”

Section: Introductionmentioning

confidence: 99%

“…These functionally integrated artificial muscle fibers are expected to replace the rigid and bulky sensing and actuating units in some smart structures and systems to lighten and flex the entire device and may even be used in some precision instruments, thus promoting the field of artificial intelligence. The actuation structures of recently developed perceptionactuation integrated artificial muscle fibers are mainly linear, 26,27 twisted, 28,29 and coiled, 24,30,31 and the functionally integrated structures mainly consist of a composite structure (all-in-one designed sensing and actuating units) 30,32 and a coaxial structure (independently designed sensing and actuating units). 24,33 The improvement of both perception and actuation performance relies on a rational design strategy for the actuation structure and functionally integrated structure.…”

Section: Introductionmentioning

confidence: 99%

“…The coiled structure serves as a performance “amplifier”, − which generally provides a larger contractile stroke for the artificial muscle fiber than the untwisted and twisted structures. For a functionally integrated structure, artificial muscle fibers prepared by the composite of sensing and actuating materials often suffer from hysteresis in the perception signals. , In contrast, the independent design strategy of noninterference between the stimulus source and the perception signals enhances the accuracy of the perception signals while reducing the complexity of the control system. However, this independent design increases the difficulty of the fiber preparation, especially for coiled fibers, and even causes the sensing unit to restrict the deformation of the actuating unit, which ultimately reduces the actuation performance.…”

Section: Introductionmentioning

confidence: 99%

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Perception-Actuation Integrated Artificial Muscle Fibers: From Structural Design to Applications

Dong,

Ren,

Yuan

et al. 2024

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Artificial muscle fibers have attracted widespread attention and demonstrated great potential for applications in smart robots, wearable electronics, biomedicine, etc. In particular, lightweight, flexible, and compact perception-actuation integrated artificial muscle fibers have become a hot research topic since they are expected to be widely used in some complex intelligent structures and systems to replace traditional mechanical sensing and actuating units, thereby enabling weight reduction of the entire device. Mimicking the mammalian neuromuscular system, the functionally integrated artificial muscle fibers can accurately perceive changes in the external environment and actuate accordingly. However, owing to the limitations of materials, structures, and control systems, the comprehensive performance of perception-actuation integrated artificial muscle fibers is far inferior to that of the natural neuromuscular system. Specifically, interface problems and lack of advanced synergy between sensing and actuating units result in hysteresis in perception and selfsensing signals. Therefore, it is highly necessary to summarize the research field of perception-actuation integrated artificial muscle fibers and gain insights into the impact of structural design on perception and actuation performance to guide their rapid development in the future.In this Account, we systematically summarize the recent advances in perception-actuation integrated artificial muscle fiber. First, we focus on the advances in the materials and structures of artificial muscle fibers for synergistic effects on perception and actuation functions. Then, we discuss the effects of the response stimulus type of artificial muscle fibers on the control system and how to regulate the structure of the fibers to reduce the complexity of the control system. Finally, application scenarios, existing challenges, and potential solutions are proposed. We expect that this Account will contribute to the further development of the perceptionactuation integrated artificial muscle fibers, thereby promoting their real-world applications.

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