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Stretchable artificial muscles from coiled polymer fibers

Published online by Cambridge University Press:  09 September 2016

Geoffrey M. Spinks Open the ORCID record for Geoffrey M. Spinks [Opens in a new window]
Geoffrey M. Spinks*
Affiliation:
ARC Centre of Excellence for Electromaterials Science, School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Soft robots are being developed to mimic the movement of biological organisms and as wearable garments to assist human movement in rehabilitation, training, and tasks encountered in functional daily living. Stretchable artificial muscles are well suited as the active mechanical element in soft wearable robotics, and here the performance of highly stretchable and compliant polymer coil muscles are described and analyzed. The force and displacements generated by a given stimulus are shown to be determined by the external loading conditions and the main material properties of free stroke and stiffness. Spring mechanics and a model based on a single helix are used to evaluate both the coil stiffness and the mechanism of coil actuation. The latter is directly coupled to a torsional actuation in the twisted fiber that forms the coil. The single helix model illustrates how fiber volume changes generate a partial fiber untwist, and spring mechanics shows how this fiber untwist generates large tensile strokes and high gravimetric work outputs in the polymer coil muscles. These analyses highlight possible as yet unexplored means for further enhancing the performance of these systems.

Keywords

actuatorpolymerfiber
Type
Invited Feature Papers
Information
Journal of Materials Research , Volume 31 , Issue 19 , 14 October 2016 , pp. 2917 - 2927
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Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Shen, H.: The soft touch. Nature 530, 24 (2016).CrossRefGoogle Scholar
Pfeifer, R., Lungarella, M., and Iida, F.: Self-organization, embodiment, and biologically inspired robotics. Science 318, 1088 (2007).CrossRefGoogle ScholarPubMed
Rus, D. and Tolley, M.T.: Design, fabrication and control of soft robots. Nature 521, 467 (2015).CrossRefGoogle ScholarPubMed
Viteckova, S., Kutilek, P., and Jirina, M.: Wearable lower limb robotics: A review. Biocybern. Biomed. Eng. 33, 96 (2013).CrossRefGoogle Scholar
Cowan, R., Fregly, B.J., Boninger, M.L., Chan, L., Rodgers, M.M., and Reinkensmeyer, D.J.: Recent trends in assistive technology for mobility. J. Neuroeng. Rehabil. 9, 20 (2012).CrossRefGoogle ScholarPubMed
Herr, H.: Exoskeletons and orthoses: Classification, design challenges and future directions. J. Neuroeng. Rehabil. 6, 21 (2009).CrossRefGoogle ScholarPubMed
Pons, J.L.: Rehabilitation exoskeletal robotics. IEEE Eng. Med. Biol. Mag., 29(3), 57 (2010).CrossRefGoogle ScholarPubMed
Asbeck, A.T., de Rossi, S.M.M., Holt, K.G., and Walsh, C.J.: A biologically inspired soft exosuit for walking assistance. Int. J. Robot. Res. 34, 744 (2015).CrossRefGoogle Scholar
Polygerinos, P., Wanga, Z., Galloway, K.C., Wood, R.J., and Walsh, C.J.: Soft robotic glove for combined assistance and at-home rehabilitation. Robot. Autonom. Syst. 73, 135 (2015).CrossRefGoogle Scholar
Mooney, L.M., Rouse, E.J., and Herr, H.M.: Autonomous exoskeleton reduces metabolic cost of human walking during load carriage. J. Neuroeng. Rehabil. 11, 80 (2014).CrossRefGoogle ScholarPubMed
Sawicki, G.S. and Ferris, D.P.: Powered ankle exoskeletons reveal the metabolic cost of plantar flexor mechanical work during walking with longer steps at constant step frequency. J. Exp. Biol. 212, 21 (2009).CrossRefGoogle ScholarPubMed
Malcolm, P., Derave, W., Galle, S., and De Clercq, D.: A simple exoskeleton that assists plantarflexion can reduce the metabolic cost of human walking. PLoS One 8, e56137 (2013).CrossRefGoogle ScholarPubMed
Mattar, E.: A survey of bio-inspired robotics hands implementation: New directions in dexterous manipulation. Robot. Autonom. Syst. 61, 517 (2013).CrossRefGoogle Scholar
Haines, C.S., Lima, M.D., Li, N., Spinks, G.M., Foroughi, J., Madden, J.D.W., Kim, S.H., Fang, S., de Andrade, M.J., Goktepe, F., Goketpe, O., Mirvakili, S.M., Naficy, S., Lepro, X., Oh, J., Kozlov, M.E., Kim, S.J., Xu, X., Swedlove, B.J., Wallace, G.G., and Baughman, R.H.: Artificial muscles from fishing line and sewing thread. Science 343, 868 (2014).CrossRefGoogle ScholarPubMed
Yip, M.C. and Niemeyer, G.: High-performance robotic muscles from conductive nylon sewing thread (IEEE Int. Conf. Robot. Autom., Seattle, May 2015), 2313–2318.CrossRefGoogle Scholar
Zoss, A.B., Kazerooni, H., and Chu, A.: Biomechanical design of the Berkeley lower extremity exoskeleton (BLEEX). IEEE ASME Trans. Mechatron. 11, 128 (2006).CrossRefGoogle Scholar
Giurgiutiu, V., Rogers, C.A., Rogers, A., and Chaudhry, Z.: Energy-based comparison of solid-state induced-strain actuators. J. Intell. Mater. Syst. Struct. 7, 4 (1996).CrossRefGoogle Scholar
Spinks, G.M., Liu, L., Wallace, G.G., and Zhou, D.: Strain response from polypyrrole actuators under load. Adv. Funct. Mater. 12, 437 (2002).3.0.CO;2-I>CrossRefGoogle Scholar
Cherubini, A., Moretti, G., Vertechy, R., and Fontana, M.: Experimental characterization of thermally-activated artificial muscles based on coiled nylon fishing lines. AIP Adv. 5, 067158 (2015).CrossRefGoogle Scholar
Zheng, W., Alici, G., Clingan, P.R., Munro, B.J., Spinks, G.M., Steele, J.R., and Wallace, G.G.: Polypyrrole stretchable actuators. J. Polym. Sci., Part B: Polym. Phys. 51, 57 (2013).CrossRefGoogle Scholar
Spinks, G.M., Campbell, T.E., and Wallace, G.G.: Force generation from polypyrrole actuators. Smart Mater. Struct. 14, 406 (2005).CrossRefGoogle Scholar
Aziz, S., Naficy, S., Foroughi, J., Brown, H.R., and Spinks, G.M.: Controlled and scalable torsional actuation of twisted nylon 6 fiber. J. Polym. Sci., Part B: Polym. Phys. 54, 1278 (2016).CrossRefGoogle Scholar
Aziz, S., Naficy, S., Foroughi, J., Brown, H.R., and Spinks, G.M.: Characterisation of torsional actuation in highly twisted yarns and fibres. Polym. Test. 46, 88 (2015).CrossRefGoogle Scholar
Foroughi, J., Spinks, G.M., Wallace, G.G., Oh, J., Kozlov, M.E., Fang, S., Mirfakhrai, T., Madden, J.D.W., Shin, M.K., Kim, S.J., and Baughman, R.H.: Torsional carbon nanotube artificial muscles. Science 334, 494 (2011).CrossRefGoogle ScholarPubMed
Lima, M.D., Li, N., de Andrade, M.J., Fang, S., Oh, J., Spinks, G.M., Kozlov, M.E., Haines, C.S., Suh, D., Foroughi, J., Kim, S.J., Chen, Y., Ware, T., Shin, M.K., Machado, L.D., Fonseca, A.F., Madden, J.D.W., Voit, W.E., Galvão, D.S., and Baughman, R.H.: Electrically, chemically, and photonically powered torsional and tensile actuation of hybrid carbon nanotube yarn muscles. Science 338, 928 (2012).CrossRefGoogle ScholarPubMed
Mirvakili, S.M., Pazukha, A., Sikkema, W., Sinclair, C.W., Spinks, G.M., Baughman, R.H., and Madden, J.D.W.: Niobium nanowire yarns and their application as artificial muscles. Adv. Funct. Mater. 23, 4311 (2013).CrossRefGoogle Scholar
Choy, C.L., Chen, F.C., and Young, K.: Negative thermal expansion in oriented crystalline polymers. J. Polym. Sci., Polym. Phys. Ed. 19, 335 (1981).CrossRefGoogle Scholar
Kobayashi, Y. and Keller, A.: The temperature coefficient of the c lattice parameter of polyethylene; an example of thermal shrink age along the chain direction. Polymer 11, 114 (1970).CrossRefGoogle Scholar
Treloar, L.R.G.: Rubber Elasticity (Oxford University Press, Oxford, 1975).Google Scholar
Ross, A.L.: Cable kinking analysis and prevention. Trans. ASME, 99, 112 (1977).Google Scholar
Fuller, F.B.: The writhing number of a space curve. Proc. Natl. Acad. Sci. U.S.A. 68, 915 (1971).CrossRefGoogle ScholarPubMed