Soft pneumatic actuators by digital light processing combined with injection-assisted post-curing

doi:10.1007/s10483-021-2705-7

Abstract

Abstract: The soft robotics display huge advantages over their rigid counterparts when interacting with living organisms and fragile objects. As one of the most efficient actuators toward soft robotics, the soft pneumatic actuator (SPA) can produce large, complex responses with utilizing pressure as the only input source. In this work, a new approach that combines digital light processing (DLP) and injection-assisted post-curing is proposed to create SPAs that can realize different functionalities. To enable this, we develop a new class of photo-cross linked elastomers with tunable mechanical properties, good stretchability, and rapid curing speed. By carefully designing the geometry of the cavities embedded in the actuators, the resulting actuators can realize contracting, expanding, flapping, and twisting motions. In addition, we successfully fabricate a soft self-sensing bending actuator by injecting conductive liquids into the three-dimensional (3D) printed actuator, demonstrating that the present method has the potential to be used to manufacture intelligent soft robotic systems.

Key words: soft pneumatic actuator (SPA), digital light processing (DLP), injection-assisted post-curing, three-dimensional (3D) printing

2010 MSC Number:

Qiang ZHANG, Shayuan WENG, Zeang ZHAO, H. J. QI, Daining FANG. Soft pneumatic actuators by digital light processing combined with injection-assisted post-curing. Applied Mathematics and Mechanics (English Edition), 2021, 42(2): 159-172.

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References

[1] TRIVEDI, D., RAHN, C. D., KIER, W. M., and WALKER, I. D. Soft robotics:biological inspiration, state of the art, and future research. Applied Bionics and Biomechanics, 5(3), 99-117(2008)
[2] RUS, D. and TOLLEY, M. T. Design, fabrication and control of soft robots. nature, 521(7553), 467-475(2015)
[3] LASCHI, C., MAZZOLAI, B., and CIANCHETTI, M. Soft robotics:technologies and systems pushing the boundaries of robot abilities. Science Robotics, 1(1), eaah3690(2016)
[4] HINES, L., PETERSEN, K., LUM, G. Z., and SITTI, M. Soft actuators for small-scale robotics. Advanced Materials, 29(13), 1603483(2017)
[5] COYLE, S., MAJIDI, C., LEDUC, P., and HSIA, K. J. Bio-inspired soft robotics:material selection, actuation, and design. Extreme Mechanics Letters, 22, 51-59(2018)
[6] WHITESIDES, G. M. Soft robotics. Angewandte Chemie, 57(16), 4258-4273(2018)
[7] ZHAO, H., O'BRIEN, K., LI, S., and SHEPHERD, R. F. Optoelectronically innervated soft prosthetic hand via stretchable optical waveguides. Science Robotics, 1(1), eaai7529(2016)
[8] MAJIDI, C. Soft robotics:a perspective-current trends and prospects for the future. Soft Robotics, 1(1), 5-11(2014)
[9] BHAGAT, S., BANERJEE, H., TSE, Z., and REN, H. L. Deep reinforcement learning for soft, flexible robots:brief review with impending challenges. Robotics, 8(1), 4(2019)
[10] AKIN, H. L., ITO, N., JACOFF, A., KLEINER, A., PELLENZ, J., and VISSER, A. J. A. M. Robocup rescue robot and simulation leagues. AI Magazine, 34(1), 78(2013)
[11] CHEN, F., LIU, K., WANG, Y., ZOU, J., GU, G., and ZHU, X. Automatic design of soft dielectric elastomer actuators with optimal spatial electric fields. IEEE Transactions on Robotics, 35(5), 1150-1165(2019)
[12] HAGHIASHTIANI, G., HABTOUR, E., PARK, S. H., GARDEA, F., and MCALPINE, M. C. 3D printed electrically-driven soft actuators. Extreme Mechanics Letters, 21, 1-8(2018)
[13] DIAHAM, S., ZELMAT, S., LOCATELLI, M. L., DINCULESCU, S., DECUP, M., LEBEY, T. J. I. T. O. D., and INSULATION, E. Dielectric breakdown of polyimide films:area, thickness and temperature dependence. IEEE Transactions on Dielectrics and Electrical Insulation, 17(1), 18-27(2010)
[14] LENDLEIN, A. Fabrication of reprogrammable shape-memory polymer actuators for robotics. Science Robotics, 3(18), eaat9090(2018)
[15] WESTBROOK, K. K., MATHER, P. T., PARAKH, V., DUNN, M. L., GE, Q., LEE, B. M., and QI, H. J. Two-way reversible shape memory effects in a free-standing polymer composite. Smart Materials and Structures, 20(6), 065010(2011)
[16] MENG, H. and LI, G. A review of stimuli-responsive shape memory polymer composites. Polymer, 54(9), 2199-2221(2013)
[17] YANG, H., LEOW, W. R., WANG, T., WANG, J., YU, J., HE, K., QI, D., WAN, C., and CHEN, X. 3D printed photoresponsive devices based on shape memory composites. Advanced Materials, 29(33), 1701627(2017)
[18] MARTINEZ, R. V., FISH, C. R., CHEN, X., and WHITESIDES, G. M. Elastomeric origami:programmable paper-elastomer composites as pneumatic actuators. Advanced Functional Materials, 22(7), 1376-1384(2012)
[19] GORISSEN, B., CHISHIRO, T., SHIMOMURA, S., REYNAERTS, D., DE VOLDER, M., and KONISHI, S. Flexible pneumatic twisting actuators and their application to tilting micromirrors. Sensors and Actuators A:Physical, 216, 426-431(2014)
[20] MORIN, S. A., KWOK, S. W., LESSING, J., TING, J., SHEPHERD, R. F., STOKES, A. A., and WHITESIDES, G. M. Elastomeric tiles for the fabrication of inflatable structures. Advanced Functional Materials, 24(35), 5541-5549(2014)
[21] MOSADEGH, B., POLYGERINOS, P., KEPLINGER, C., WENNSTEDT, S., SHEPHERD, R. F., GUPTA, U., SHIM, J., BERTOLDI, K., WALSH, C. J., and WHITESIDES, G. M. Pneumatic networks for soft robotics that actuate rapidly. Advanced Functional Materials, 24(15), 2163-2170(2014)
[22] ROCHE, E. T., WOHLFARTH, R., OVERVELDE, J. T., VASILYEV, N. V., PIGULA, F. A., MOONEY, D. J., BERTOLDI, K., and WALSH, C. J. A bioinspired soft actuated material. Advanced Materials, 26(8), 1200-1206(2014)
[23] YUK, H., LIN, S., MA, C., TAKAFFOLI, M., FANG, N. X., and ZHAO, X. Hydraulic hydrogel actuators and robots optically and sonically camouflaged in water. Nature Communications, 8(1), 14230(2017)
[24] CONNOLLY, F., POLYGERINOS, P., WALSH, C. J., and BERTOLDI, K. Mechanical programming of soft actuators by varying fiber angle. Soft Robotics, 2(1), 26-32(2015)
[25] CONNOLLY, F., WALSH, C. J., and BERTOLDI, K. Automatic design of fiber-reinforced soft actuators for trajectory matching. Proceedings of the National Academy of Sciences of the United States of America, 114(1), 51-56(2017)
[26] KIM, S. Y., BAINES, R., BOOTH, J., VASIOS, N., BERTOLDI, K., and KRAMERBOTTIGLIO, R. Reconfigurable soft body trajectories using unidirectionally stretchable composite laminae. Nature Communications, 10(1), 3464(2019)
[27] THRASHER, C. J., SCHWARTZ, J. J., and BOYDSTON, A. J. Modular elastomer photoresins for digital light processing additive manufacturing. ACS Applied Materials & Interfaces, 9(45), 39708-39716(2017)
[28] WALLIN, T. J., PIKUL, J. H., BODKHE, S., PEELE, B. N., MAC MURRAY, B. C., THERRIAULT, D., MCENERNEY, B. W., DILLON, R. P., GIANNELIS, E. P., and SHEPHERD, R. F. Click chemistry stereolithography for soft robots that self-heal. Journal of Materials Chemistry B, 5(31), 6249-6255(2017)
[29] WEHNER, M., TRUBY, R. L., FITZGERALD, D. J., MOSADEGH, B., WHITESIDES, G. M., LEWIS, J. A., and WOOD, R. J. An integrated design and fabrication strategy for entirely soft, autonomous robots. nature, 536(7617), 451-455(2016)
[30] SCHAFFNER, M., FABER, J. A., PIANEGONDA, L., RUHS, P. A., COULTER, F., and STUDART, A. R. 3D printing of robotic soft actuators with programmable bioinspired architectures. Nature Communications, 9(1), 878(2018)
[31] TRUBY, R. L., WEHNER, M., GROSSKOPF, A. K., VOGT, D. M., UZEL, S. G. M., WOOD, R. J., and LEWIS, J. A. Soft somatosensitive actuators via embedded 3D printing. Advanced Materials, 30(15), 1706383(2018)
[32] PATEL, D. K., SAKHAEI, A. H., LAYANI, M., ZHANG, B., GE, Q., and MAGDASSI, S. Highly stretchable and UV curable elastomers for digital light processing based 3D printing. Advanced Materials, 29(15), 1606000(2017)
[33] GE, L., DONG, L., WANG, D., GE, Q., and GU, G. A digital light processing 3D printer for fast and high-precision fabrication of soft pneumatic actuators. Sensors and Actuators A:Physical, 273, 285-292(2018)
[34] ZHANG, Y. F., NG, C. J. X., CHEN, Z., ZHANG, W., PANJWANI, S., KOWSARI, K., YANG, H. Y., and GE, Q. Miniature pneumatic actuators for soft robots by high-resolution multimaterial 3D printing. Advanced Materials Technologies, 4(10), 1900427(2019)
[35] STEYRER, B., BUSETTI, B., GYRGY, H., LISKA, R., and STAMPFL, J. Hot lithography vs. room temperature DLP 3D-printing of a dimethacrylate. Additive Manufacturing, 21, 209-214(2018)
[36] DICKEY, M. D., CHIECHI, R. C., LARSEN, R. J., WEISS, E. A., WEITZ, D. A., and WHITESIDES, G. M. Eutectic gallium-indium (egain):a liquid metal alloy for the formation of stable structures in microchannels at room temperature. Advanced Functional Materials, 18(7), 1097-1104(2008)
[37] ZHANG, Q., ROACH, D. J., GENG, L., CHEN, H., QI, H. J., and FANG, D. Highly stretchable and conductive fibers enabled by liquid metal dip-coating. Smart Materials and Structures, 27(3), 035019(2018)
[38] JONES, R. M. Mechanics of Composite Materials, 2nd ed., CRC Press, Philadelphia, 71-81(1998)