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Published Online: 1 December 2017

Soft Dielectric Elastomer Oscillators Driving Bioinspired Robots

Publication: Soft Robotics
Volume 4, Issue Number 4

Abstract

Entirely soft robots with animal-like behavior and integrated artificial nervous systems will open up totally new perspectives and applications. To produce them, we must integrate control and actuation in the same soft structure. Soft actuators (e.g., pneumatic and hydraulic) exist but electronics are hard and stiff and remotely located. We present novel soft, electronics-free dielectric elastomer oscillators, which are able to drive bioinspired robots. As a demonstrator, we present a robot that mimics the crawling motion of the caterpillar, with an integrated artificial nervous system, soft actuators and without any conventional stiff electronic parts. Supplied with an external DC voltage, the robot autonomously generates all signals that are necessary to drive its dielectric elastomer actuators, and it translates an in-plane electromechanical oscillation into a crawling locomotion movement. Therefore, all functional and supporting parts are made of polymer materials and carbon. Besides the basic design of this first electronic-free, biomimetic robot, we present prospects to control the general behavior of such robots. The absence of conventional stiff electronics and the exclusive use of polymeric materials will provide a large step toward real animal-like robots, compliant human machine interfaces, and a new class of distributed, neuron-like internal control for robotic systems.

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References

1.
Suzumori K, Iikura S, Tanaka H. Applying a flexible microactuator to robotic mechanisms. Control Systems, IEEE 1992;12:21–27.
2.
Chou C-P, Hannaford B. Measurement and modeling of McKibben pneumatic artificial muscles. IEEE Transactions on Robotics and Automation 1996;12:90–102.
3.
Shepherd RF, Ilievski F, Choi W, Morin SA, Stokes AA, et al. Multigait soft robot. Proc Natl Acad Sci U S A 2011;108:20400–20403.
4.
Katzschmann RK, Marchese AD, Rus D. Experimental Robotics, Chapter 7. Hsieh MA, Khatib O, Kumar V. (Eds). Switzerland: Springer International Publishing, 2016, pp. 405–420.
5.
Calisti M, Giorelli M, Levy G, Mazzolai B, Hochner B, et al. An octopus-bioinspired solution to movement and manipulation for soft robots. Bioinspir Biomim 2011;6:036002.
6.
Rus D, Tolley MT. Design, fabrication and control of soft robots. Nature 2015;521:467–475.
7.
Majidi C. Soft robotics: a perspective—current trends and prospects for the future. Soft Robotics 2014;1:5–11.
8.
Trivedi D, Rahn CD, Kier WM, Walker ID. Soft robotics: biological inspiration, state of the art, and future research. Appl Bionics Biomech 2008;5:99–117.
9.
Rogers JA, Someya T, Huang Y. Materials and mechanics for stretchable electronics. Science 2010;327:1603–1607.
10.
Mosadegh B, Kuo C-H, Tung Y-C, Torisawa Y-s, Bersano-Begey T, Tavana H, Takayama S. Integrated elastomeric components for autonomous regulation of sequential and oscillatory flow switching in microfluidic devices. Nat Phys 2010;6:433–437.
11.
Wehner M, Tolley MT, Mengüç Y, Park Y-L, Mozeika A, Ding Y, et al. Pneumatic energy sources for autonomous and wearable soft robotics. Soft Robotics 2014;1:263–274.
12.
Wehner M, Truby RL, Fitzgerald DJ, Mosadegh B, Whitesides GM, Lewis JA, et al. An integrated design and fabrication strategy for entirely soft, autonomous robots. Nature 2016;536:451–455.
13.
Carpi F, de Rossi DE, Kornbluh R, Pelrine R, Sommer-Larsen P. (Eds). Dielectric Elastomers as Electromechanical Transducers: Fundamentals, Materials, Devices, Models and Applications of an Emerging Electroactive Polymer. Amsterdam: Elsevier, 2008.
14.
Anderson IA, Gisby TA, McKay TG, O'Brien BM, Calius EP. Multi-functional dielectric elastomer artificial muscles for soft and smart machines. J Appl Phys 2012;112:041101.
15.
Kim KJ. (Ed). Electroactive Polymers for Robotic Applications: Artificial Muscles and Sensors. London: Springer, 2007.
16.
Pelrine R, Kornbluh R, Pei Q, Joseph J. High-speed electrically actuated elastomers with strain greater than 100%. Science 2000;287:836–839.
17.
Li T, Keplinger C, Baumgartner R, Bauer S, Yang W, Suo Z. Giant voltage-induced deformation in dielectric elastomers near the verge of snap-through instability. J Mech Phys Solids 2012;61:611–628.
18.
Bar-Cohen Y. Electroactive polymers as artificial muscles: a review. Journal of Spacecraft and Rockets 2002;39:822–827.
19.
Toth LA, Goldenberg AA. Control system design for a dielectric elastomer actuator: the sensory subsystem. Proc SPIE 2002;4695:323–334.
20.
Keplinger C, Kaltenbrunner M, Arnold N, Bauer S. Capacitive extensometry for transient strain analysis of dielectric elastomer actuators. Appl Phys Lett 2008;92:192903.
21.
O'Brien B, Gisby T, Anderson IA. Stretch sensors for human body motion. Proc SPIE 2014;9056:905618.
22.
McKay T, O'Brien B, Calius E, Anderson I. Self-priming dielectric elastomer generators. Smart Mater Struct 2010;19:055025.
23.
Anderson IA, Illenberger P, O'Brien BM. Energy harvesting for dielectric elastomer sensing. Electroactive Polymer Actuators and Devices (EAPAD) 2016, SPIE-Intl Soc Optical Eng, 2016.
24.
Gisby T, O'Brien B, Anderson IA. Electroactivity in Polymeric Materials. Rasmussen L. (Ed). New York: Springer, 2012, pp. 131–141.
25.
Poulin A, Rosset S, Shea HR. Printing low-voltage dielectric elastomer actuators. Appl Phys Lett 2015;107:244104.
26.
Weiss FM, Töpper T, Osmani B, Peters S, Kovacs G, Müller B. Electrospraying nanometer-thin elastomer films for low-voltage dielectric actuators. Adv Electron Mater 2016;2:1500476.
27.
Madsen FB, Yu L, Daugaard AE, Hvilsted S, Skov AL. Silicone elastomers with high dielectric permittivity and high dielectric breakdown strength based on dipolar copolymers. Polymer 2014;55:6212–6219.
28.
Beruto D, Capurro M, Marro G. Piezoresistance behavior of silicone—graphite composites in the proximity of the electric percolation threshold. Sens Actuators A Phys 2005;117:301–308.
29.
O'Brien BM, Calius EP, Inamura T, Xie SQ, Anderson IA. Dielectric elastomer switches for smart artificial muscles. Appl Phys A 2010;100:385–389.
30.
O'Brien BM, Anderson IA. An artificial muscle ring oscillator. IEEE/ASME Transactions on Mechatronics 2012;17:197–200.
31.
Wilson KE, Henke E-FM, Slipher GA, Anderson IA. Rubbery logic gates. Extreme Mech Lett 2016;9:188–194.
32.
Mandal M, Sarkar B. Ring oscillators: characteristics and applications. Indian J Pure Appl Phys 2010;48:136–145.
33.
Foo CC, Koh SJA, Keplinger C, Kaltseis R, Bauer S, Suo Z. Performance of dissipative dielectric elastomer generators. J Appl Phys 2012;111:094107.
34.
Michel S, Zhang XQ, Wissler M, Löwe C, Kovacs G. A comparison between silicone and acrylic elastomers as dielectric materials in electroactive polymer actuators. Polym Int 2010;59:391–399.
35.
Bartlett NW, Tolley MT, Overvelde JTB, Weaver JC, Mosadegh B, et al. A 3D-printed, functionally graded soft robot powered by combustion. Science 2015;349:161–165.

Information & Authors

Information

Published In

cover image Soft Robotics
Soft Robotics
Volume 4Issue Number 4December 2017
Pages: 353 - 366
PubMed: 29251566

History

Published in print: December 2017
Published online: 1 December 2017
Published ahead of print: 21 June 2017

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Authors

Affiliations

E.-F. Markus Henke
Biomimetics Lab, Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
Institute of Solid State Electronics, TU Dresden, Dresden, Germany.
Samuel Schlatter
Microsystems for Space Technologies Laboratory, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Iain A. Anderson
Biomimetics Lab, Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
StretchSense Ltd., Auckland, New Zealand.
The Department of Engineering Science, University of Auckland, Auckland, New Zealand.

Notes

Address correspondence to:E.-F. Markus HenkeBiomimetics LabAuckland Bioengineering InstituteThe University of Auckland70 Symonds StreetAuckland 1010New Zealand
E-mail: [email protected]
Iain A. AndersonBiomimetics LabAuckland Bioengineering InstituteThe University of Auckland70 Symonds StreetAuckland 1010New Zealand
E-mail: [email protected]

Author Disclosure Statement

No competing financial interests exist.

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