Dual-responsive jumping actuators by light and humidity

Li, Jingjing; Wang, Meilin; Cui, Zhanpeng; Liu, Shiyong; Feng, Danyang; Mei, Guangkai; Zhang, Rui; An, Baigang; Qian, Dong; Zhou, Xiang; Liu, Zunfeng

doi:10.1039/d2ta07339k

Cited by 15 publications

(20 citation statements)

References 47 publications

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“…[81] A few actuating films with initial planar shape can undergo deformation to arch or overlapping shape under stimuli and then generate jumping motions. [85] However, the response time to jump may increase. The film size also affects jumping performance: in particular, the optimal jumping characteristics can be achieved at a certain ratio of length and width.…”

Section: Energy Storage and Instantaneous Releasementioning

confidence: 99%

“…will be described in detail and summarized in Table 2. [54,55,[60][61][62][63]76,[79][80][81][82][83][84][85][86]91,100]…”

Section: Classification By Input Stimulusmentioning

confidence: 99%

“…In addition, while hydraulic actuators offer some jumping capabilities, such as the ability to jump over certain distances and heights and to steer in specific directions, there is still room for improvement in terms of their overall jumping performance. [85] When NIR light is irradiated on the actuator film, the actuator generates rapid deformation and jumps due to the reaction force generated by pushing the hind leg into the ground. C,D) Schematic illustration and photographs of the moisture-powered jumping actuator.…”

Section: Hydraulic-powered Jumping Actuatorsmentioning

confidence: 99%

“…C,D) Schematic illustration and photographs of the moisture-powered jumping actuator. [85] The actuator film with a curved architecture is placed on the ground. When moisture is applied on the film, the "A-C" part of the film tends to unbend.…”

Section: Hydraulic-powered Jumping Actuatorsmentioning

confidence: 99%

“…Recently, our group fabricated a multi-responsive jumping actuator driven by light and moisture. [85] Upon NIR light irradiation, the arc polyvinylidene fluoride (PVDF)-carbon black (CB)/poly(2-ethylhexyl acrylate) (PEA)/polyacrylamide (PAM) actuator suddenly overcame the height of 4.5 mm and the distance of 37.5 mm on the zigzag surface by pushing the hind leg into the ground (Figure 11A,B). The actuator could also jump on a flat rough surface with directionality.…”

Section: Multi-stimuli-powered Jumping Actuatorsmentioning

confidence: 99%

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Recent Development of Jumping Motions Based on Soft Actuators

Wang

et al. 2023

Adv Funct Materials

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Drawing inspiration from the jumping motions of living creatures in nature, jumping robots have emerged as a promising research field over the past few decades due to great application potential in interstellar exploration, military reconnaissance, and life rescue missions. Early reviews mainly focused on jumping robots made of lightweight and rigid materials with mechanical components, concentrating on jumping control and stability. Herein, attention is paid to the jumping mechanisms of soft actuators assembled from various soft smarting materials and powered by different stimulus sources. The challenges and prospects of soft jumping actuators are also discussed. It is hoped that this review will contribute to the further development of soft jumping actuators and broaden their practical applications.

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Section: Energy Storage and Instantaneous Releasementioning

confidence: 99%

“…will be described in detail and summarized in Table 2. [54,55,[60][61][62][63]76,[79][80][81][82][83][84][85][86]91,100]…”

Section: Classification By Input Stimulusmentioning

confidence: 99%

Section: Hydraulic-powered Jumping Actuatorsmentioning

confidence: 99%

Section: Hydraulic-powered Jumping Actuatorsmentioning

confidence: 99%

Section: Multi-stimuli-powered Jumping Actuatorsmentioning

confidence: 99%

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Recent Development of Jumping Motions Based on Soft Actuators

Wang

et al. 2023

Adv Funct Materials

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Highly‐Aligned All‐Fiber Actuator with Asymmetric Photothermal‐Humidity Response and Autonomous Perceptivity

Zhang,

Zhou,

Liu

et al. 2024

Advanced Materials

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Soft robots adapt to complex environments for autonomous locomotion, manipulation, and perception are attractive for robot‐environment interactions. Strategies to reconcile environment‐triggered actuation and self‐powered sensing responses to different stimuli remain challenging. By tuning the in situ vapor phase solvent exchange effect in continuous electrospinning, an asymmetric highly‐aligned all‐fiber membrane (HAFM) with a hierarchical “grape‐like” nanosphere‐assembled microfiber structure (specific surface area of 13.6 m2 g−1) and excellent mechanical toughness (tensile stress of 5.5 MPa, and fracture toughness of 798 KJ m−3) is developed, which shows efficient asymmetric actuation to both photothermal and humidity stimuli. The HAFM consists of a metal‐organic framework (MOF)‐enhanced moisture‐responsive layer and an MXene‐improved photothermal‐responsive layer, which achieves substantial actuation with a bending curvature up to ≈7.23 cm−1 and a fast response of 0.60 cm−1 s−1. By tailoring the fiber alignment and bi‐layer thickness ratio, different types of micromanipulators, automatic walking robots, and plant robots with programmable structures are demonstrated, which are realized for self‐powered information perception of material type, object moisture, and temperature by integrating the autonomous triboelectric effect induced by photothermal‐moisture actuation. This work presents fiber materials with programable hierarchical asymmetries and inspires a common strategy for self‐powered organism‐interface robots to interact with complex environments.

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Humidity‐Responsive Actuator with Viewable and Programmable Deformation Enabled by Tannic Acid as Physical Cross‐linker

Guo,

Zhang,

Cui

et al. 2023

Adv Materials Technologies

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Programmable humidity‐driven actuators can autonomously transform into predefined forms in reaction to environmental stimuli, which are appealing for the creation of intelligent devices. Herein, this study reports a viewable in situ programmed humidity‐driven monolayer actuator consisting of hydrophilic poly(vinyl alcohol) (PVA), polyacrylamide (PAAm), and tannic acid (TA). Benefiting from the multiple hydrogen bonding of TA with PVA and PAAm, TA acts as a physical cross‐linker to precisely control the modulus distribution of the monolayer film when introducing patterns by TA in the polymer film. Moreover, the physical anchoring effect of TA to PVA and PAAm makes TA molecules highly fluorescent in solid state. The resulting PVA/PAAm/TA film simultaneously exhibits high optical transparency (>80%), good mechanical property (tensile stress at break of 75.0 MPa, Young’s modulus of 7.1 GPa), bright cyan fluorescence, and reversible fast humidity‐response (0.04 s) under the relative humidity difference (ΔRH) of 55%. After in‐plane patterning, the film actuator can bend toward controllable directions in response to humidity gradient, and its programmed mode can be viewed by the fluorescence under UV light. This viewable and programmable approach will substantially aid the design of humidity‐driven actuators for applications in the fields of biomimicry, artificial muscles, and intelligent switches.

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Dual-responsive jumping actuators by light and humidity

Abstract: Development of a multiresponsive miniaturized soft robot that can jump in different scenarios is highly desirable. This requires the actuator to simultaneously realize a large bending angle, a fast response,...

Cited by 15 publications

References 47 publications

Recent Development of Jumping Motions Based on Soft Actuators

Recent Development of Jumping Motions Based on Soft Actuators

Highly‐Aligned All‐Fiber Actuator with Asymmetric Photothermal‐Humidity Response and Autonomous Perceptivity

Humidity‐Responsive Actuator with Viewable and Programmable Deformation Enabled by Tannic Acid as Physical Cross‐linker

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