[1] Z Chen, F Gao, Y Pan, et al. Novel door-opening method for six-legged robots based on only force sensing. Chinese Journal of Mechanical Engineering, 2017, 30(5): 1227–1238.
[2] J Carpentier, N Mansard. Multicontact locomotion of legged robots. IEEE Transactions on Robotics, 2018, 34(6): 1441–1460.
[3] C Wang, K Sim, J Chen, et al. Soft ultrathin electronics innervated adaptive fully soft robots. Advanced Materials, 2018, 30(13): 1706695.1–1706695.9.
[4] Y Tang, L Qin, X Li, et al. A frog-inspired swimming robot based on dielectric elastomer actuators. IEEE/RSJ International Conference on Intelligent Robots & Systems, Vancouver, BC, Canada, September 24–28, 2017: 2403-2408.
[5] S Seok, C D Onal, K J Cho, et al. Meshworm: A peristaltic soft robot with antagonistic nickel titanium coil actuators. IEEE-ASME Transactions on Mechatronics, 2013, 18(5): 1485–1497.
[6] Z Ren, W Hu, X Dong, et al. Multi-functional soft-bodied jellyfish-like swimming. Nature Communications, 2019, 10(1): 1–2.
[7] M P Cunha, S Ambergen, M G Debije, et al. A soft transporter robot fueled by light. Advanced Science, 2020, 7(5): 1902842.
[8] S Shian, K Bertoldi, D R Clarke. Dielectric elastomer based "grippers" for soft robotics. Advanced Materials, 2015, 27(43): 6814–6819.
[9] B Mazzolai, L Margheri, M Cianchetti, et al. Soft-robotic arm inspired by the octopus: II. From artificial requirements to innovative technological solutions. Bioinspiration & Biomimetics, 2012, 7(2): 025005.
[10] Q Shen, T Wang, J Liang, et al. Hydrodynamic performance of a biomimetic robotic swimmer actuated by ionic polymer-metal composite. Smart Materials and Structures, 2013, 22(7).
[11] T Paulino, P Ribeiro, M Neto, et al. Low-cost 3-axis soft tactile sensors for the human-friendly robot Vizzy. International Conference on Robotics and Automation, Singapore, May 29–June 3, 2017: 966-971.
[12] Y L Park, B R Chen, R J Wood. Soft artificial skin with multi-modal sensing capability using embedded liquid conductors. IEEE Sensors, Limerick, Ireland, October 28–31, 2011: 81–84.
[13] A Atalay, V Sanchez, O Atalay, et al. Batch fabrication of customizable silicone‐textile composite capacitive strain sensors for human motion tracking. Advanced Materials Technologies, 2017, 2(9): 1700136.
[14] T Hellebrekers, O Kroemer, C Majidi. Soft magnetic skin for continuous deformation sensing. Advanced Intelligent Systems, 2019, 1(4).
[15] J Guo, M Niu, C Yang. Highly flexible and stretchable optical strain sensing for human motion detection. Optica, 2017, 4(10): 1285.
[16] C Cao, X Gao, A T Conn. A magnetically coupled dielectric elastomer pump for soft robotics. Advanced Materials Technologies, 2019, 4(8).
[17] J Shintake, V Cacucciolo, H Shea, et al. Soft biomimetic fish robot made of dielectric elastomer actuators. Soft Robotics, 2018, 5(4): 466–474.
[18] X Ji, X Liu, V Cacucciolo, et al. An autonomous untethered fast soft robotic insect driven by low-voltage dielectric elastomer actuators. Science Robotics, 2019, 4(37).
[19] J Shintake, S Rosset, B Schubert, et al. Versatile soft grippers with intrinsic electroadhesion based on multifunctional polymer actuators. Advanced Materials, 2016, 28(2): 231–238.
[20] G Gu, J Zou, R Zhao, et al. Soft wall-climbing robots. Science Robotics, 2018, 3(25).
[21] E Acome, S K Mitchell, T G Morrissey, et al. Hydraulically amplified self-healing electrostatic actuators with muscle-like performance. Science, 2018, 359(6371): 61–65.
[22] S K Mitchell, X Wang, E Acome, et al. An easy-to-implement toolkit to create versatile and high performance HASEL actuators for Untethered Soft Robots. Advanced Science, 2019, 6(14): 1900178.
[23] Y Li, M Guo, Y Li. Recent advances in plasticized PVC gels for soft actuators and devices: A review. Journal of Materials Chemistry C, 2019, 7(42): 12991–13009.
[24] X Cheng, W Yang, L Cheng, et al. Tunable-focus negative poly (vinyl chloride) gelmicrolens driven by unilateral electrodes. Journal of Applied Polymer Science, 2018, 135(15): 46136.
[25] A Zatopa, S Walker, Y Menguc. Fully soft 3D-printed electroactive fluidic valve for soft hydraulic robots. Soft Robotics, 2018, 5(3): 258-271.
[26] Y Hao, Z Liu, J Liu, et al. A soft gripper with programmable effective length, tactile and curvature sensory feedback. Smart Materials and Structures, 2020, 29(3): 035006.
[27] S Felton, M Tolley, E Demaine, et al. A method for building self-folding machines. Science, 2014, 345(6197): 644–646.
[28] T Chen, K Shea. An autonomous programmable actuator and shape reconfigurable structures using bistability and shape memory polymers. 3D Printing and Additive Manufacturing, 2018, 5(2).
[29] A M Hubbard, E Luong, A Ratanaphruks, et al. Shrink films get a grip. ACS Applied Polymer Materials, 2019.
[30] R Mikołaj, Z Hao, X Chen, et al. Light-driven soft robot mimics caterpillar locomotion in natural scale. Advanced Optical Materials, 2016, 4(11): 1689–1694.
[31] A Byoungkwon, S Miyashita, A Ong, et al. An end-to-end approach to self-folding origami structures by uniform heat. IEEE Transactions on Robotics, 2017, 34(6).
[32] H T Lin, G G Leisk, B Trimmer. GoQBot: a caterpillar-inspired soft-bodied rolling robot. Bioinspiration & Biomimetics, 2011, 6(2): 026007.
[33] W Hu, G Z Lum, M Mastrangeli, et al. Small-scale soft-bodied robot with multimodal locomotion. Nature, 2018, 554(7690): 81–85.
[34] Y Kim, H Yuk, R Zhao, et al. Printing ferromagnetic domains for untethered fast-transforming soft materials. Nature, 2018, 558(7709): 274–279.
[35] Y Kim, G A Parada, S Liu, et al. Ferromagnetic soft continuum robots. Science Robotics, 2019, 4(33): eaax7329.
[36] G Mao, M Drack, M Karami-Mosammam, et al. Soft electromagnetic actuators. Science Advances, 2020, 6(26): eabc0251.
[37] R Dong, Y Hu, Y Wu, et al. Visible-light-driven BiOI-based Janus micromotor in pure water. Journal of the American Chemical Society, 2017, 139(5): 1722–1725.
[38] O M Wani, R Verpaalen, H Zeng, et al. An artificial nocturnal flower via humidity-gated photoactuation in liquid crystal networks. Advanced Materials, 2019, 31(2): 1805985.
[39] H Yang, W R Leow, T Wang, et al. 3D printed photoresponsive devices based on shape memory composites. Advanced Materials, 2017, 29(33): 1701627.1–1701627.7.
[40] D Vogt, Y L Park, R J Wood. A soft multi-axis force sensor. IEEE Sensors, Taipei, Taiwan, China, October 28–31, 2012: 1–4.
[41] X Shi, C H Cheng, Y Zheng, et al. An EGaIn-based flexible piezoresistive shear and normal force sensor with hysteresis analysis in normal force direction. Journal of Micromechanics and Microengineering, 2016, 26(10): 105020.
[42] G Gu, H Xu, S Peng, et al. Integrated soft ionotropic skin with stretchable and transparent hydrogel-elastomer ionic sensors for hand-motion monitoring. Soft Robotics, 2019, 6(3): 368–76.
[43] C F Hu, W S Su, W Fang. Development of patterned carbon nanotubes on a 3D polymer substrate for the flexible tactile sensor application. Journal of Micromechanics & Microengineering, 2011, 21(11): 115012.
[44] R L Truby, M Wehner, A K Grosskopf, et al. Soft somatosensitive actuators via embedded 3D printing. Advanced Materials, 2018, 30(15): 1706383.1–1706383.8.
[45] R L Truby, C D Santina, D Rus. Distributed proprioception of 3D configuration in soft, sensorized robots via deep learning. IEEE Robotics and Automation Letters, 2020, 5(2): 3299–3306.
[46] C Mu, Y Song, W Huang, et al. Flexible normal-tangential force sensor with opposite resistance responding for highly sensitive artificial skin. Advanced Functional Materials, 2018, 28(18): 1707503.
[47] C Pang, G Y Lee, T I Kim, et al. A flexible and highly sensitive strain-gauge sensor using reversible interlocking of nanofibres. Nature Materials, 2012, 11(9): 795–801.
[48] S H Cho, S W Lee, S Yu, et al. Micropatterned pyramidal ionic gels for sensing broad-range pressures with high sensitivity. ACS Applied Materials & Interfaces, 2017, 9(11): 10128–10135.
[49] S Kang, J Lee, S Lee, et al. Highly sensitive pressure sensor based on bioinspired porous structure for real-time tactile sensing. Advanced Electronic Materials, 2016, 2(12): 1600356.
[50] D Kwon, T I Lee, J Shim, et al. Highly sensitive, flexible and wearable pressure sensor based on a giant piezocapacitive effect of three-dimensional microporous elastomeric dielectric layer. ACS Applied Materials & Interfaces, 2016, 8(26): 16922–16931.
[51] S Peng, S Chen, Y Huang, et al. High sensitivity capacitive pressure sensor with bi-layer porous structure elastomeric dielectric formed by a facile solution based process. IEEE Sensors, 2018, 3(2): 1–4.
[52] L Ma, X Shuai, Y Hu, et al. A highly sensitive and flexible capacitive pressure sensor based on a micro-arrayed polydimethylsiloxane dielectric layer. Journal of Materials Chemistry C, 2018, 6(48): 13232–13240.
[53] P Roberts, D D Damian, W Shan, et al. Soft-matter capacitive sensor for measuring shear and pressure deformation. International Conference on Robotics and Automation, Karlsruhe, Germany, May 6–10, 2013: 3529–3534.
[54] L Viry, A Levi, M Totaro, et al. Flexible three-axial force sensor for soft and highly sensitive artificial touch. Advanced Materials, 2014, 26(17): 2659–2664.
[55] Y Huang, H Yuan, W Kan, et al. A flexible three-axial capacitive tactile sensor with multilayered dielectric for artificial skin applications. Microsystem Technologies, 2017, 23(6): 1847-1852.
[56] C M Boutry, M Negre, M Jorda, et al. A hierarchically patterned, bioinspired e-skin able to detect the direction of applied pressure for robotics. Science Robotics, 2018, 3(24): eaau6914.
[57] T P Tomo, A Schmitz, W K Wong, et al. Covering a robot fingertip with uSkin: A soft electronic skin with distributed 3-axis force sensitive elements for robot hands. International Conference on Robotics and Automation, Brisbane, Australia, May 21–25, 2018, 3(1): 124–131.
[58] H Guo, F Ju, Y Cao, et al. Continuum robot shape estimation using permanent magnets and magnetic sensors. Sensors and Actuators A: Physical, 2019, 285: 519–530.
[59] J Ge, X Wang, M Drack, et al. A bimodal soft electronic skin for tactile and touchless interaction in real time. Nature Communications, 2019, 10(1): 1–10.
[60] H Liu, J Back, K Althoefer. Feasibility study-novel optical soft tactile array sensing for minimally invasive surgery. IEEE/RSJ International Conference on Intelligent Robots & Systems, Hamburg, Germany, September 28–October 02, 2015: 1528–1533.
[61] Llamosiartemis, Toussaintseverine. Measuring force intensity and direction with a spatially resolved soft sensor for biomechanics and robotic haptic capability. Soft Robotics, 2019, 6(3): 346–355.
[62] H Zhao, O Brien, Kevin, S Li, et al. Optoelectronically innervated soft prosthetic hand via stretchable optical waveguides. Science Robotics, 2016, 1(1): eaai7529.
[63] J Jung, M Park, D Kim, et al. Optically sensorized elastomer air chamber for proprioceptive sensing of soft pneumatic actuators. International Conference on Robotics and Automation, Paris, France, May 31–Jun 4, 2020, 5(2): 2333–2340.