Dual-responsive jumping actuators by light and humidity

Self Cite

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.

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

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Moisture‐Driven Actuators

Tang,

Zhao,

Liu

et al. 2024

Water constitutes a huge circulation network in solid, liquid and gaseous forms that contains inestimable recyclable energy. Obtaining energy from gaseous moisture is challenging but of great significance to promote the energy upgrading. The emergence of moisture‐driven actuator (MDA) provides an effective way in converting moisture energy to mechanical energy. The MDA can combine with water molecules through hygroscopicity and swell to produce macroscopic deformation. Due to the wide distribution of humidity and the wireless driving mode, MDA shows great application potential in the fields of environmental monitoring, remote control and energy harvesting. This paper comprehensively reviews the research progress of MDA from aspects of hydrophilic materials, structures, preparing methods, multi‐response integration and applications, aiming at providing guidance for the design, preparation and application of MDA. Besides, the challenges faced by MDA are analyzed and corresponding solutions are proposed, which points out the next stage developing direction of MDA.

Click‐Beetles‐Inspired Light‐Driven Continuous Jumping Robots Based on Janus Azobenzene Polymer Films

Kuang,

Liu,

Meng

et al. 2024

Azobenzene‐mesogen photo‐actuator is frequently utilized in diverse bionic motions due to their unparalleled advantages of wireless and reversible actuation. The realm of jumping behavior remains unexplored for azobenzene‐based actuators. Inspired by the Click‐beetles, here a Janus light‐driven jumping robot is achieved through the integration effect of an azobenzene molecule (with a short thermal relaxation time) and a splay alignment. The prepared Azobenzene liquid crystal films exhibit remarkable light‐driven continuous jumping capabilities, with jumping heights of 35 body lengths (BL) and takeoff speeds of 0.67 m s−1 (670 BL s−1), these data currently surpass the performance of small‐mass jumping robots. This research will be helpful for the design of novel actuators and broaden of the application scenarios of azobenzene actuators.