A Lesson from Plants: High‐Speed Soft Robotic Actuators

Baumgartner, Richard; Kogler, Alexander; Stadlbauer, Josef M.; Foo, Chuan-Sheng; Kaltseis, Rainer; Baumgartner, Melanie; Mao, Guoyong; Keplinger, Christoph; Koh, Soo Jin Adrian; Arnold, N.; Suo, Zhigang; Kaltenbrunner, Martin; Bauer, Siegfried

doi:10.1002/advs.201903391

Cited by 75 publications

(70 citation statements)

References 35 publications

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“…Therefore, through the careful control of the applied pressure, snap-through-based high-speed soft actuation can be achieved using elastomeric membranes. [72] Soft dielectric elastomeric (DE) membranes are known to reduce their thickness and expand their area when subjected to a potential difference. [73][74][75][76] The combination of this property with the snap-through instabilities of pressurized membranes allows the electrical control of the rapid transition between stable states of DE membranes pressurized at a constant pressure p ≈ p c1 , facilitating the control of these high-speed soft actuators.…”

Section: Snap-through Instabilities In Elastomeric Membranesmentioning

confidence: 99%

Exploiting Mechanical Instabilities in Soft Robotics: Control, Sensing, and Actuation

et al. 2021

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He received his B.Eng. degree from the Department of Production Engineering, Jadavpur University in 2014. He then joined the lab of Prof. Ramses Martinez in the School of Industrial Engineering, Purdue University, working on soft robotics and flexible biosensors, and in 2020, he obtained his Ph.D. His current research interests focus on modeling and development of soft robots, mechanical metamaterials, and flexible electronics.

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Section: Snap-through Instabilities In Elastomeric Membranesmentioning

confidence: 99%

Exploiting Mechanical Instabilities in Soft Robotics: Control, Sensing, and Actuation

et al. 2021

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“…Electroactive polymers (EAP) respond to electricity with fast response speed and significant displacement. [70] Plasticized PVC gel is a promising electroactive polymer, which manifests advantages of flexibility, large deformation, and high stability. [71] PVC gel based fiber actuator was reported, which consists of conductive PVC inner core and nonconductive PVC shell.…”

Section: Electric Actuationmentioning

confidence: 99%

Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

2020

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Fiber that has been known for thousands of years for textile engineering, is a kind of thin 1D material with large length-diameter ratio and softness. Fiber can be further processed into 1D or 3D yarns and 2D or 3D fabrics and can be subjected to wellestablished textile manufacturing techniques, such as dyeing, twisting, sewing, knitting, weaving, braiding, etc. [1] As commercially available material, fabric has been widely used for clothing, bedding, or furniture. Such wide-adoption demonstrates fabrics/textiles to be important and adaptable as daily useable material due to their merits of protection, breathability, comfort, and durability. [2] In recent years, novel smart responsive functions are desirable to be implemented on fibers and fabrics for seamless integrations of actuators, sensors, power sources, etc., to realize the robotic fibers/fabric-based manipulators and human-robot interfaces. These emerging responsive fibers/ fabrics are desirable to offer programmable functions, actuations, perception and capable of building an intuitive and dynamic collaborative scenarios with human, promising in enabling applications such as remote operation, human motion assistance, human perception, health monitoring and biomedical detection and therapy. [3][4][5] It is an attractive concept that the future human-robot interfaces could be embodied in familiar forms for humans such as textiles or clothes. Compared with the polymeric and elastomeric soft robotics, [6][7][8][9] fibers and fabrics are advantageous in applications of soft robotics and wearables for human. The devices could be programmable to have accurate designs in configuration and high performance by traditional manufacturing processes of textile, applying twist to transform fibers into coils, yarns with hierarchical structures, which could be further fabricated into fabrics or textiles by sewing, weaving, knitting, etc., techniques (Figure 1), guaranteeing good wearability, skin affinity, washability, and durability, which are intriguing and necessary for friendly robotics interactions with human.Soft robotics include three main components of actuators, sensors, and control modules with power sources. [10,11] Of which, actuators, sensors and power sources all could be designed in the form of fibers or fabrics, rendering facile assembly, and integration by interlocking. [12] Common actuations can be Soft robotics inspired by the movement of living organisms, with excellent adaptability and accuracy for accomplishing tasks, are highly desirable for efficient operations and safe interactions with human. With the emerging wearable electronics, higher tactility and skin affinity are pursued for safe and user-friendly human-robot interactions. Fabrics interlocked by fibers perform traditional static functions such as warming, protection, and fashion. Recently, dynamic fibers and fabrics are favorable to deliver active stimulus responses such as sensing and actuating abilities for soft-robots and wearables. First, the responsive mechanisms of fiber/fabric actu...

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“…Inspired by unique actuation schemes in nature, bistable actuation has been utilized successfully in other soft actuator systems. [69,82,83] The electrode placement and geometry in a donut HASEL actuator can be modified to achieve new types of functionalities, such as tunable lenses. [84] The large dynamic linear actuation strains and high power-toweight ratios of planar HASEL actuators are compelling for applications requiring periodic motion.…”

Section: Research Opportunities For Hasel Actuators Made From Elastomersmentioning

confidence: 99%

HASEL Artificial Muscles for a New Generation of Lifelike Robots—Recent Progress and Future Opportunities

et al. 2020

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Figure 1. Selected sources of inspiration for hydraulically amplified self-healing electrostatic (HASEL) actuators. The timeline shows key sources of inspirations for the invention of the HASEL technology. Photo of the hummingbird and elephant by Günter Oesterling and reproduced with permission. Photo of the octopus by Jeahn Laffitte on Unsplash and reproduced with permission. "Soft, electrostatic actuator studied by Röntgen" image:

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A Lesson from Plants: High‐Speed Soft Robotic Actuators

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/advs.201903391. This publication is dedicated to Siegfried Bauer, who has sadly passed away during the course of this work 5th Anniversary Article [ †] Deceased December 2018.

Cited by 75 publications

References 35 publications

Exploiting Mechanical Instabilities in Soft Robotics: Control, Sensing, and Actuation

Exploiting Mechanical Instabilities in Soft Robotics: Control, Sensing, and Actuation

Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

HASEL Artificial Muscles for a New Generation of Lifelike Robots—Recent Progress and Future Opportunities

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