Abstract
Making soft robots that can flexibly transform among different morphologies has long been a dream in both science and engineering areas. With outstanding versatile capabilities, liquid metals are opening breakthrough strategies for molding future smart soft robots that had never been anticipated before or hardly achievable by a rigid metal or conventional material. All the evidences collected so far pointed out that liquid metal machine is evolving via a rather quick way. The latest discoveries on a group of very fundamental phenomena of liquid metals and technological advances thus enabled significantly strengthened this endeavor. Clearly, combining allied components with the liquid metal systems is offering many brand new machine roles as well as incubating future highly advanced robots. In fact, capabilities as offered by liquid metals are far much profound than one can expect. There is plenty of space to explore in the area. This chapter gives a brief overview of soft robots and some unconventional opportunities that liquid metal could provide for innovating the soft machine science and technology.
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Bradley JC, Chen HM, Crawford J et al (1997) Creating electrical contacts between metal particles using directed electrochemical growth. Nature 389:268–271
Curtis CL, Ritchie JE, Sailor MJ (1993) Fabrication of conducting polymer interconnects. Science 262:2014–2016
Eelkema R, Pollard MM, Vicario J et al (2006) Nanomotor rotates microscale objects. Nature 440:163
Zhao Y, Fang J, Wang HX et al (2010) Magnetic liquid marbles: manipulation of liquid droplets using highly hydrophobic Fe3O4 nanoparticles. Adv Mater 22:707–710
Nawroth JC, Lee H, Feinberg AW et al (2012) A tissue-engineered jellyfish with biomimetic propulsion. Nat Biotechnol 30:792–797
Liu Y, Gao M, Mei SF et al (2013) Ultra-compliant liquid metal electrodes with in-plane self-healing capability for dielectric elastomer actuators. Appl Phys Lett 103:064101–064104
Laschi C, Mazzolai B, Mattoli V et al (2009) Design and development of a soft actuator for a robot inspired by the octopus arm. Exper Robot 54:25–33
Lin HT, Leisk GG, Trimmer B (2011) GoQBot: a caterpillar-inspired soft-bodied rolling robot. Bioinspiration Biomimetics 6:026007–026018
Seok S, Onal C, Wood R et al (2010) Peristaltic locomotion with antagonistic actuators in soft robotics. In: International conference on robotics and automation, vol 1, pp 1228–1233
Quillin KJ (1999) Kinematic scaling of locomotion by hydrostatic animals: Ontogeny of peristaltic crawling by the earthworm Lumbricus terrestris. J Exp Biol 202:661–674
Jung K, Koo JC, Nam JD et al (2007) Artificial annelid robot driven by soft actuators. Bioinspiration Biomimetics 2:42–49
Yuk H, Kim D, Lee H et al (2011) Shape memory alloy-based small crawling robots inspired by C. elegans. Bioinspiration Biomimetics 6:046002–046015
Simon MA, Woods WA, Serebrenik YV et al (2010) Visceral-locomotorypistoning in crawling caterpillars. Curr Biol 20:1458–1463
Trimmer B, Issberner J (2007) Kinematics of soft-bodied, legged locomotion in Manducasexta larvae. Biol Bull 212:130–142
Metallo C, White RD, Trimmer BA (2011) Flexible parylene-based microelectrode arrays for high resolution EMG recordings in freely moving small animals. J Neurosci Meth 195:176–184
Sumbre G, Fiorito G, Flash T, Hochner B (2005) Motor control of flexible octopus arms. Nature 433:595–596
Shepherd RF, Ilievski F, Choi W et al (2011) Multigait soft robot. P Natl Acad Sci USA 108:20400–20403
Margheri L, Laschi C, Mazzolai B (2012) Soft robotic arm inspired by the octopus: I. From biological functions to artificial requirements. Bioinspiration Biomimetics 7:025004–025016
Kim S, Laschi C, Trimmer B (2013) Soft robotics: a bioinspired evolution in robotics. Trends Biotechnol 31:287–294
Wehner M, Truby RL, Fitzgerald DJ et al (2016) An integrated design and fabrication strategy for entirely soft, autonomous robots. Nature 536:451–455
Li HY, Mei SF, Wang L, Gao YX, Liu J (2014) Splashing phenomena of room temperature liquid metal droplet striking on the pool of the same liquid under ambient air environment. Int J Heat Fluid Flow 47:1–8
Liu J (2016) Liquid metal machine is evolving to soft robotics. Sci China Technol Sc 59:1793–1794
Sheng L, Zhang J, Liu J (2014) Diverse transformations of liquid metals between different morphologies. Adv Mater 26:6036–6042
Tang SY, Khoshmanesh K, Sivan V et al (2014) Liquid metal enabled pump. Proc Natl Acad Sci USA 111:3304–3309
Hu L, Wang L, Ding Y et al (2016) Manipulation of liquid metals on a graphite surface. Adv Mater 28:9210–9217
Hu L, Yuan B, Liu J (2017) Liquid metal amoeba with spontaneous pseudopodia formation and motion capability. Sci Rep 7:7256–7264
Wang L, Liu J (2016) Graphite induced periodical self-actuation of liquid metal. RSC Adv 6:60729–60735
Tang J, Zhao X, Li J et al (2017) Liquid metal phagocytosis: intermetallic wetting induced particle internalization. Adv Sci 5:1700024–1700029
Chen S, Yang X, Cui Y, Liu J (2018) Self-growing and serpentine locomotion of liquid metal induced by copper ions. ACS Appl Mater Interfaces 10:22889–22895
Zhang J, Yao Y, Sheng L, Liu J (2015) Self-fueled biomimetic liquid metal mollusk. Adv Mater 27:2648–2655
Zhang J, Yao YY, Liu J (2015) Autonomous convergence and divergence of the self-powered soft liquid metal vehicles. Sci Bull 60:943–951
Tan SC, Yuan B, Liu J (2016) Electrical method to control the running direction and speed of self-powered tiny liquid metal motors. Proc R Soc A-Math Phys 41:22663–22667
Yuan B, Wang L, Yang X, Ding Y, Tan S, Yi L, He ZZ, Liu J (2016) Liquid metal machine triggered violin-like wire oscillator. Adv Sci 3:1600212–1600215
Zhang J, Guo R, Liu J (2016) Self-propelled liquid metal motors steered by a magnetic or electrical field for drug delivery. J Mater Chem B 4:5349–5357
Yao Y, Liu Y (2016) Liquid metal wheeled small vehicle for cargo delivery. RSC Adv 6:56482–56488
Wang XL, Liu J (2016) Recent advancements in liquid metal flexible printed electronics: properties, technologies, and applications. Micromachines 7:206–229
Yao Y, Liu Y (2017) A polarized liquid metal worm squeezing across localized irregular gap. RSC Adv 7:11049–11056
Wang Q, Yu Y, Liu J (2017) Preparations, characteristics and applications of the functional liquid metal materials. Adv Eng Mater 2017:1700781–1700800
Yi L, Liu J (2017) Liquid metal biomaterials: a newly emerging area to tackle modern biomedical challenges. Int Mater Rev 62:415–440
Zavabeti S, Daeneke T, Chrimes A et al (2016) Ionic imbalance induced self-propulsion of liquid metals. Nat Commun 7:12402
Gough RC, Dang JH, Moorefield MR et al (2016) Self-actuation of liquid metal via redox reaction. ACS Appl Mater Interfaces 8:6–10
Fang WQ, He ZZ, Liu J (2014) Electro-hydrodynamic shooting phenomenon of liquid metal stream. Appl Phys Lett 105:1341041–1341044
Khan MR, Trlica C, Dickey MD (2015) Recapillarity: electrochemically controlled capillary withdrawal of a liquid metal alloy from microchannels. Adv Funct Mater 25:671–678
Sheng L, He Z, Yao Y, Liu J (2015) Transient state machine enabled from the colliding and coalescence of a swarm of autonomously running liquid metal motors. Small 11(39):5253–5261
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Liu, J., Sheng, L., He, ZZ. (2019). Introduction. In: Liquid Metal Soft Machines. Topics in Mining, Metallurgy and Materials Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-2709-4_1
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DOI: https://doi.org/10.1007/978-981-13-2709-4_1
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