Piezoelectric‐Driven Self‐Sensing Leaf‐Mimic Actuator Enabled by Integration of a Self‐Healing Dielectric Elastomer and a Piezoelectric Composite

Pan, Min; Yuan, Chenggang; Pickford, Tom; Tian, Jing; Ellingford, Christopher; Zhou, Ning; Bowen, Christopher R.; Wan, Chaoying

doi:10.1002/aisy.202170062

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…c) The actuation of the LCE actuator (0.18 g) under 150 V loaded a weight of 210.26 g. d) Relative resistance change and deformation of LCE actuator versus time at a DC voltage of 150 V. The thermal images of the LCE actuator before and after actuation are shown inset. e) Ashby plot of actuation strain versus lifted object mass/self‐weight ratio of self‐sensing actuators including LCE actuator combined with liquid metal [ 13,14 ] and helical metal wire, [ 18 ] foam actuator, [ 27 ] photo‐responsive liquid‐vapor phase transition elastomer, [ 28 ] dielectric elastomer, [ 29,30 ] and hydrogel. [ 31 ] f) Relative resistance change Δ R/R 0 of proposed graphite/CB doped LCE actuator versus time for stability test.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 2e shows the Ashby plot of the actuating strain versus lifted object mass/self‐weight ratio for our self‐sensing graphite/CB doped LCE actuator and previously reported results. It can be seen that the lifted object mass/self‐weight ratio of previously reported self‐sensing actuators, from LCE actuators combined with liquid metal and helical metal wire (with lifted object mass/self‐weight ratio of 40, [ 13 ] 200, [ 14 ] and 85 [ 18 ] times) to foam actuator (FA) (500 [ 27 ] times), photo‐responsive liquid‐vapor phase transition elastomer (PRPTE) (400 [ 28 ] times), dielectric elastomer (DE) (55 [ 29 ] and 200 [ 30 ] times), and hydrogel (100 [ 31 ] times), are all less than 500 times. In contrast, two inorganic materials, carbon black (Young's modulus of 80 GPa) [ 22 ] and graphite (Young's modulus of 1026 GPa), [ 23 ] were doped into the LCE actuator to enhance the mechanical strength in this work, resulting in a significant increase in the LCE actuator's lifted object mass/self‐weight ratio up to 1168 times, which indicates a significant improvement in mechanical strength.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Intelligent Liquid Crystal Elastomer Actuators with High Mechanical Strength, Self‐Sensing, and Automatic Control

Min,

Wu,

Zhang

et al. 2023

Advanced Sensor Research

View full text Add to dashboard Cite

Self‐sensing liquid crystal elastomer (LCE) actuators with integration of sensing and actuating have attracted significant attention in health monitoring and physical rehabilitation therapy. However, the development of LCE actuators equipped with high mechanical strength, self‐sensing capabilities, and automatic control simultaneously is still a significant challenge. Here, intelligent self‐sensing LCE actuators with high mechanical strength and automatic control are demonstrated by doping carbon‐materials composite of graphite and carbon black. The proposed actuators, driven by the electrothermal effect, demonstrate a significant increase in the ratio of lifted object mass/self‐weight ratio up to 1168 times, which is then tested in activities such as football kicking and arm swinging of a doll. The self‐sensing LCE actuators possess a 30% actuation strain and have real‐time sensing capability during Joule heating. They can be programmed by control circuits based on conditional logic judgments of the target. In addition, a smart glove equipped with self‐sensing LCE actuators, which have high mechanical strength and an automatic control system for assisting finger movement, is also demonstrated. The proposed LCE actuator shows great potential for applications in assisting finger movement, aiding in joint and knee recovery, and other smart physical rehabilitation therapy applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Intelligent Liquid Crystal Elastomer Actuators with High Mechanical Strength, Self‐Sensing, and Automatic Control

Min,

Wu,

Zhang

et al. 2023

Advanced Sensor Research

View full text Add to dashboard Cite

show abstract

“…[19] The vibration characteristics of piezoelectric actuators, which rely on the converse piezoelectric effect, are crucial for their mechanical output performance. [28][29][30][31][32] Therefore, dynamic analysis of piezoelectric actuators plays a significant role in their design and optimization to understand their dynamic behavior. [33][34][35] However, there is currently a lack of simulation and analysis methods to investigate the undulation characteristics and transient time-domain behavior of piezoelectric bimorphs, presenting an ongoing challenge.…”

Section: Introductionmentioning

confidence: 99%

A Biomimetic Piezoelectric Composite‐Driven Undulation Underwater Robotic Structure: Characteristic Analysis and Experimental Investigation

Liu,

Wu,

Jin

et al. 2023

Advanced Intelligent Systems

View full text Add to dashboard Cite

Numerous proposals and recommendations have been made in the development of underwater undulation robots, but very few studies have focused on the undulation characteristics of undulation robots. The undulating mode of the clearnose skate utilizing the activation of the pectoral fins in undulatory bursts is particularly suitable for slow and efficient swimming. Inspired by the working principle of the clearnose skate, herein, an undulation robotic structure is presented. Considering the hydrodynamic skeleton and propulsion mechanism of the clearnose skate, the solution is based on a piezoelectric composite for realizing undulatory propulsion. This approach leverages the converse piezoelectric effect and modal coupling to produce the desired undulating motion, thereby achieving the undulation design of the robot. The proposed robotic structure can realize the propulsion mode using piezoelectric composites to undulate in the same direction and can use the clockwise or counterclockwise undulation of piezoelectric composites to achieve the steering mode. In addition, finite element analysis is employed as an approach to investigate the undulation characteristics and transient vibration characteristics of the robot. The operational efficiency of the robotic structure is assessed through experiments. The results show that the propulsion mode achieves the speed of 3.33 body‐length s−1. The steering mode exhibits the steering velocities of 17.4 deg s−1.

show abstract

3D printing of flexible piezoelectric composite with integrated sensing and actuation applications

Li,

Zhang,

Yan

et al. 2024

Advanced Powder Materials

View full text Add to dashboard Cite

Piezoelectric‐Driven Self‐Sensing Leaf‐Mimic Actuator Enabled by Integration of a Self‐Healing Dielectric Elastomer and a Piezoelectric Composite

Cited by 3 publications

References 0 publications

Intelligent Liquid Crystal Elastomer Actuators with High Mechanical Strength, Self‐Sensing, and Automatic Control

Intelligent Liquid Crystal Elastomer Actuators with High Mechanical Strength, Self‐Sensing, and Automatic Control

A Biomimetic Piezoelectric Composite‐Driven Undulation Underwater Robotic Structure: Characteristic Analysis and Experimental Investigation

3D printing of flexible piezoelectric composite with integrated sensing and actuation applications

Contact Info

Product

Resources

About