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3D printing for soft robotics – a review

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Pages 243-262 | Received 11 Jul 2017, Accepted 21 Jan 2018, Published online: 08 Mar 2018

References

  • Duda T , Raghavan LV . 3D metal printing technology. IFAC-PapersOnLine 2016;49:103–110. DOI:10.1016/j.ifacol.2016.11.111.
  • Bikas H , Stavropoulos P , Chryssolouris G . Additive manufacturing methods and modeling approaches: a critical review. Int J Adv Manuf Technol. 2016;83:389–405. DOI:10.1007/s00170-015-7576-2.
  • Gul JZ , Yang B-S , Yang YJ , et al . In situ UV curable 3D printing of multi-material tri-legged soft bot with spider mimicked multi-step forward dynamic gait. Smart Mater Struct. 2016;25:115009. DOI:10.1088/0964-1726/25/11/115009.
  • Gul JZ , Yang YJ , Young Su K , et al . Omni directional multimaterial soft cylindrical actuator and its application as a steerable catheter. Soft Robot. 2017;4(3):224–240. soro.2016.0042. DOI:10.1089/soro.2016.0042.
  • Lifton VA , Lifton G , Simon S . Options for additive rapid prototyping methods (3D printing) in MEMS technology. Rapid Prototyp J. 2014;20:403–412. DOI:10.1108/RPJ-04-2013-0038.
  • Angrish A . A critical analysis of additive manufacturing technologies for aerospace applications. 2014 IEEE Aerosp Conf, Big Sky, MT, USA. 2014;2014:1–6. DOI:10.1109/AERO.2014.6836456.
  • Bhushan B , Caspers M . An overview of additive manufacturing (3D printing) for microfabrication. Microsyst Technol. 2017;23:1117–1124. DOI:10.1007/s00542-017-3342-8.
  • Boparai KS , Singh R , Singh H . Development of rapid tooling using fused deposition modeling: a review. Rapid Prototyp J. 2016;22:281–299. DOI:10.1108/RPJ-04-2014-0048.
  • Chen RK , Jin Y , Wensman J , et al . Additive manufacturing of custom orthoses and prostheses – a review. Addit Manuf. 2016;12:77–89. DOI:10.1016/j.addma.2016.04.002.
  • Yang S , Zhao YF . Additive manufacturing-enabled design theory and methodology: a critical review. Int J Adv Manuf Technol. 2015;80:327–342. DOI:10.1007/s00170-015-6994-5.
  • Engstrom DS , Porter B , Pacios M , et al . Additive nanomanufacturing – a review. J Mater Res. 2014;1–25. DOI:10.1557/jmr.2014.159.
  • Espalin D , Alberto Ramirez J , Medina F , et al . A review of melt extrusion additive manufacturing processes: I Process design and modeling. Rapid Prototyp J. 2014;20:192–204. DOI:10.1108/RPJ-01-2013-0012.
  • Fera M , Fruggiero F , Lambiase A , et al . State of the art of additive manufacturing: review for tolerances, mechanical resistance and production costs. Cogent Eng. 2016;3:1261503. DOI:10.1080/23311916.2016.1261503.
  • Ford SLN . Additive manufacturing technology: potential implications for U.S. manufacturing competitiveness. J Int Commer Econ. 2014;6:1–35.
  • Ford S , Despeisse M . Additive manufacturing and sustainability: an exploratory study of the advantages and challenges. J Clean Prod. 2016;137:1573–1587. DOI:10.1016/j.jclepro.2016.04.150.
  • Frketic J , Dickens T , Ramakrishnan S . Automated manufacturing and processing of fiber-reinforced polymer (FRP) composites: an additive review of contemporary and modern techniques for advanced materials manufacturing. Addit Manuf. 2017;14:69–86. DOI:10.1016/j.addma.2017.01.003.
  • Gong X , Anderson T , Chou K . Review on powder-based electron beam additive manufacturing technology. Manuf Rev. 2014;1:1–2. DOI:10.1051/mfreview/2014001.
  • Guo N , Leu MC . Additive manufacturing: technology, applications and research needs. Front Mech Eng. 2013;8:215–243. DOI:10.1007/s11465-013-0248-8.
  • Hedges M , Marin AB . 3D Aerosol Jet® Printing – adding electronics functionality to RP/RM. WHITEPAPER – optomec. 2012:14–15.
  • Huang Y , Leu MC , Mazumder J , et al . Additive manufacturing: current state, future potential, gaps and needs, and recommendations. J Manuf Sci Eng. 2015;137:14001. DOI:10.1115/1.4028725.
  • Ivanova O , Williams C , Campbell T . Rapid Prototyping Journal Additive manufacturing (AM) and nanotechnology: promises and challenges. Rapid Prototyp J. 2013;19:353–364. DOI:10.1108/RPJ-12-2011-0127.
  • Khorram Niaki M , Nonino F . Additive manufacturing management: a review and future research agenda. Int J Prod Res. 2016;7543:1–21. DOI:10.1080/00207543.2016.1229064.
  • Rosen DW . A review of synthesis methods for additive manufacturing. Virtual Phys Prototyp. 2016;1–13. DOI:10.1080/17452759.2016.1240208.
  • Snyder TJ , Andrews M , Weislogel M , et al . 3D systems’ technology overview and new applications in manufacturing, engineering, science, and education, 3D print. Addit Manuf. 2014;1:169–176. DOI:10.1089/3dp.2014.1502.
  • Vaezi M , Seitz H , Yang S . A review on 3D micro-additive manufacturing technologies. Int J Adv Manuf Technol. 2013;67:1721–1754. DOI:10.1007/s00170-012-4605-2.
  • Yadollahi A , Shamsaei N . Additive manufacturing of fatigue resistant materials: challenges and opportunities. Int J Fatigue. 2017;98:14–31. DOI:10.1016/j.ijfatigue.2017.01.001.
  • Chimene D , Lennox KK , Kaunas RR , et al . Advanced bioinks for 3D printing: a materials science perspective. Ann Biomed Eng. 2016;44:2090–2102. DOI:10.1007/s10439-016-1638-y.
  • Elahinia M , Shayesteh Moghaddam N , Taheri Andani M , et al . Fabrication of NiTi through additive manufacturing: a review. Prog Mater Sci. 2016;83:630–663. DOI:10.1016/j.pmatsci.2016.08.001.
  • Vaezi M , Chianrabutra S , Mellor B , et al . Multiple material additive manufacturing – part 1: a review. Virtual Phys Prototyp. 2013;8:19–50. DOI:10.1080/17452759.2013.778175.
  • Choi J , Kwon OC , Jo W , et al . 4D printing technology: a review, 3d print. Addit Manuf. 2015;2:159–167. DOI:10.1089/3dp.2015.0039.
  • Khoo ZX , Teoh JEM , Liu Y , et al . 3D printing of smart materials: a review on recent progresses in 4D printing. Virtual Phys Prototyp. 2015;10:103–122. DOI:10.1080/17452759.2015.1097054.
  • Zolfagharian A , Kouzani AZ , Khoo SY , et al . Evolution of 3D printed soft actuators. Sensors Actuators A Phys. 2016;250:258–272. DOI:10.1016/j.sna.2016.09.028.
  • Elango N , Faudzi AAM . A review article: investigations on soft materials for soft robot manipulations. Int J Adv Manuf Technol. 2015;80(5-8):1027–1037. DOI:10.1007/s00170-015-7085-3.
  • Hines L , Petersen K , Lum GZ , et al . Soft actuators for small-scale robotics. Adv Mater. 2016:1603483. DOI:10.1002/adma.201603483.
  • Dordlofva C , Lindwall A , Törlind P . Opportunities and challenges for additive manufacturing in space applications. Proc Nord. 2016; Trondheim, Norway, 10th - 12th August 2016;1:401–410. ISBN: 978-1-904670-80-3.
  • Goh GD , Agarwala S , Goh GL , et al . Additive manufacturing in unmanned aerial vehicles (UAVs): challenges and potential. Aerosp Sci Technol. 2016;63:140–151. DOI:10.1016/j.ast.2016.12.019.
  • Gross BC , Erkal JL , Lockwood SY , et al . Evaluation of 3D printing and its potential impact on biotechnology and the chemical sciences. Anal Chem. 2014;86:3240–3253. DOI:10.1021/ac403397r.
  • He Y , Wu Y , Fu JZ , et al . Developments of 3D printing microfluidics and applications in chemistry and biology: a review. Electroanalysis 2016;28:1658–1678. DOI:10.1002/elan.201600043.
  • Liu W , Li Y , Liu J , et al . Application and performance of 3D printing in nanobiomaterials. J Nanomater. 2013;2013:1–7. DOI:10.1155/2013/681050.
  • Patra S , Young V . A review of 3D printing techniques and the future in biofabrication of bioprinted tissue. Cell Biochem Biophys. 2016;74:93–98. DOI:10.1007/s12013-016-0730-0.
  • Tack P , Victor J , Gemmel P , et al . 3D-printing techniques in a medical setting: a systematic literature review. Biomed Eng Online. 2016;15:115. DOI:10.1186/s12938-016-0236-4.
  • Martinez RV , Glavan AC , Keplinger C , et al . Soft actuators and robots that are resistant to mechanical damage. Adv Funct Mater. 2014;24:3003–3010. DOI:10.1002/adfm.201303676.
  • Tolley MT , Shepherd RF , Mosadegh B , et al . Untethered soft robot. Soft Robot. 2014;1:213–223. DOI:10.1089/soro.2014.0008.
  • Hong S , Sycks D , ai Chan HF , et al . 3D printing: 3D printing of highly stretchable and tough hydrogels into complex, cellularized structures. Adv Mater. 2015;27:4034. DOI:10.1002/adma.201570182.
  • Culha U , Hughes J , Rosendo A , et al . Soft robotics: trends, applications and challenges. 2017. DOI:10.1007/978-3-319-46460-2.
  • Zhao H , O’Brien K , Li S , et al . Optoelectronically innervated soft prosthetic hand via stretchable optical waveguides. Sci Robot. 2016;1:eaai7529. DOI:10.1126/scirobotics.aai7529.
  • Wehner M , Truby RL , Fitzgerald DJ , et al . An integrated design and fabrication strategy for entirely soft, autonomous robots. Nature 2016;536:451–455. DOI:10.1038/nature19100.
  • Mosadegh B , Polygerinos P , Keplinger C , et al . Pneumatic networks for soft robotics that actuate rapidly. Adv Funct Mater. 2014;24:2163–2170. DOI:10.1002/adfm.201303288.
  • Martinez RV , Branch JL , Fish CR , et al . Robotic tentacles with three-dimensional mobility based on flexible elastomers. Adv Mater. 2013;25:205–212. DOI:10.1002/adma.201203002.
  • Song YS , Sun Y , Van Den Brand R , et al . Soft robot for gait rehabilitation of spinalized rodents. IEEE Int Conf Intell Robot Syst, Tokyo, Japan. 2013:971–976. DOI:10.1109/IROS.2013.6696468.
  • Umedachi T , Trimmer BA . Design of a 3D-printed soft robot with posture and steering control. 2014 IEEE Int Conf Robot Autom, Hong Kong, China. IEEE 2014:2874–2879. DOI:10.1109/ICRA.2014.6907272.
  • Kim J , Alspach A , Yamane K . 3D printed soft skin for safe human-robot interaction. IEEE Int Conf Intell Robot Syst, Hamburg, Germany. 2015 Dec:2419–2425. DOI:10.1109/IROS.2015.7353705.
  • Bartlett NW , Tolley MT , Overvelde JTB , et al . A 3D-printed, functionally graded soft robot powered by combustion. Science (80-.). 2015;349:161–165. DOI:10.1126/science.aab0129.
  • Katzschmann RK , Marchese AD , Rus D . Hydraulic autonomous soft robotic fish for 3D swimming. In Chatila R , Hirzinger G , editors. Berlin, Heidelberg: Springer Berlin Heidelberg; 2016. p. 405–420. DOI:10.1007/978-3-319-23778-7_27.
  • Onal CD , Rus D . Autonomous undulatory serpentine locomotion utilizing body dynamics of a fluidic soft robot. Bioinspir Biomim. 2013;8:26003. DOI:10.1088/1748-3182/8/2/026003.
  • Homberg BS , Katzschmann RK , Dogar MR , et al . Haptic identification of objects using a modular soft robotic gripper. Intell Robots Systems (IROS), 2015 IEEE/RSJ Int Conf, Hamburg, Germany. 2015;1698–1705.
  • Umedachi T , Vikas V , Trimmer BA . Softworms: the design and control of non-pneumatic, 3D-printed, deformable robots. Bioinspir Biomim. 2016;11:25001. DOI:10.1088/1748-3190/11/2/025001.
  • Truby RL , Lewis JA . Printing soft matter in three dimensions. Nature 2016;540:371–378. DOI:10.1038/nature21003.
  • Chan V , Park K , Collens MB , et al . Development of miniaturized walking biological machines. Sci Rep. 2012;2:857. DOI:10.1038/srep00857.
  • Chan V , Jeong JH , Bajaj P , et al . Multi-material bio-fabrication of hydrogel cantilevers and actuators with stereolithography. Lab Chip. 2012;12:88–98. DOI:10.1039/C1LC20688E.
  • Peele BN , Wallin TJ , Zhao H , et al . 3D printing antagonistic systems of artificial muscle using projection stereolithography. Bioinspir Biomim. 2015;10:55003. DOI:10.1088/1748-3190/10/5/055003.
  • MacCurdy R , Katzschmann R , Kim Y , et al . Printable hydraulics: a method for fabricating robots by 3D co-printing solids and liquids. arXiv Prepr. arXiv1512.03744. 2015. Available from: http://arxiv.org/abs/1512.03744.
  • Gul JZ , Yang B-S , Yang YJ , et al . In situ UV curable 3D printing of multi-material tri-legged soft bot with spider mimicked multi-step forward dynamic gait. Smart Mater Struct. 2016;25:115009. DOI:10.1088/0964-1726/25/11/115009.
  • Lin H-T , Leisk GG , Trimmer B . GoQBot: a caterpillar-inspired soft-bodied rolling robot. Bioinspir Biomim. 2011;6:26007. DOI:10.1088/1748-3182/6/2/026007.
  • Rost A , Schadle S . The SLS-generated soft robotic hand – an integrated approach using additive manufacturing and reinforcement learning. 2013 12th Int Conf Mach Learn Appl, Miami Beach, Miami, FL, USA. IEEE 2013:215–220. DOI:10.1109/ICMLA.2013.44.
  • Roppenecker DB , Pfaff A , Coy JA , et al . Multi arm snake-like robot kinematics. 2013 IEEE/RSJ Int Conf Intell Robot Syst, Tokyo, Japan. IEEE 2013;2013:5040–5045. DOI:10.1109/IROS.2013.6697085.
  • Guo SZ , Heuzey M , Therriault D . Solvent – cast direct – write microfabrication of thermoplastic-based nanocomposite structures. 19TH Int Conf Compos Mater, Montreal, Quebec, Canada. 2013:1–9.
  • Lewis JA . Direct ink writing of 3D functional materials. Adv Funct Mater. 2006;16:2193–2204. DOI:10.1002/adfm.200600434.
  • Robinson SS , O’Brien KW , Zhao H , et al . Integrated soft sensors and elastomeric actuators for tactile machines with kinesthetic sense. Extrem Mech Lett. 2015;5:47–53. DOI:10.1016/j.eml.2015.09.005.
  • Xu X , Cheng W , Dudek D , et al . Material modeling for shape deposition manufacturing of biomimetic components. Am Soc Mech Eng. 2000;DETC2000/D:1–10.
  • Bailey SA , Cham JG , Cutkosky MR , et al . Biomimetic robotic mechanisms via shape deposition manufacturing. Robot Res 9th Int Symp. 1999:403–410.
  • Cham JG , Bailey SA , Clark JE , et al . Fast and robust: hexapedal robots via shape deposition manufacturing. Int J Rob Res. 2002;21:869–882. DOI:10.1177/0278364902021010837.
  • Dollar AM , Howe RD . Design and evaluation of a robust compliant grasper using shape deposition manufacturing. Dyn Syst Control Parts A B. ASME 2005:1403–1410. DOI:10.1115/IMECE2005-79791.
  • Gafford J , Ding Y , Harris A , et al . Shape deposition manufacturing of a soft, atraumatic, and deployable surgical grasper. J Mech Robot. 2015;7:21006. DOI:10.1115/1.4029493.
  • Morrow J , Hemleben S , Menguc Y . Directly fabricating soft robotic actuators with an open-source 3-D printer. IEEE Robot Autom Lett. 2017;2:277–281. DOI:10.1109/LRA.2016.2598601.
  • Carrico JD , Traeden NW , Aureli M , et al . Fused filament 3D printing of ionic polymer-metal composites (IPMCs). Smart Mater Struct. 2015;24:125021. DOI:10.1088/0964-1726/24/12/125021.
  • Onal CD , Rus D . A modular approach to soft robots. Proc IEEE RAS EMBS Int Conf Biomed Robot Biomechatronics, Rome, Italy. 2012:1038–1045. DOI:10.1109/BioRob.2012.6290290.
  • Mutlu R , Yildiz SK , Alici G , et al . Mechanical stiffness augmentation of a 3D printed soft prosthetic finger. 2016 IEEE Int Conf Adv Intell Mechatronics, Banff, Alberta, Canada. 2016:7–12. DOI:10.1109/AIM.2016.7576735.
  • Yap HK , Ng HY , Yeow C-H . High-force soft printable pneumatics for soft robotic applications. Soft Robot. 2016;3:144–158. DOI:10.1089/soro.2016.0030.
  • Rossiter J , Walters P , Stoimenov B . Printing 3D dielectric elastomer actuators for soft robotics. Proc Spie. 2009;7287:1–10. DOI:10.1117/12.815746.
  • Cai J . 4D printing dielectric elastomer actuator based soft robots; 2016.
  • Zarek M , Layani M , Cooperstein I , et al . 3D printing of shape memory polymers for flexible electronic devices. Adv Mater. 2016;28:4449–4454. DOI:10.1002/adma.201503132.
  • Yang Y , Chen Y , Wei Y , et al . 3D printing of shape memory polymer for functional part fabrication. Int J Adv Manuf Technol. 2016;84:2079–2095. DOI:10.1007/s00170-015-7843-2.
  • Zolfagharian A , Kouzani AZ , Khoo SY , et al . 3D printed hydrogel soft actuators. 2016 IEEE Reg 10 Conf, Marina Bay Sands, Singapore. IEEE. 2016;2016:2272–2277. DOI:10.1109/TENCON.2016.7848433.
  • Ozbolat IT , Hospodiuk M . Current advances and future perspectives in extrusion-based bioprinting. Biomaterials 2016;76:321–343. DOI:10.1016/j.biomaterials.2015.10.076.
  • Yuk H , Lin S , Ma C , et al . Hydraulic hydrogel actuators and robots optically and sonically camouflaged in water. Nat Commun. 2017;8:14230. DOI:10.1038/ncomms14230.
  • Paik JK , Wood RJ . A bidirectional shape memory alloy folding actuator. Smart Mater Struct. 2012;21:65013. DOI:10.1088/0964-1726/21/6/065013.
  • Umedachi T , Vikas V , Trimmer BA . Highly deformable 3-D printed soft robot generating inching and crawling locomotions with variable friction legs. IEEE Int Conf Intell Robot Syst, Tokyo, Japan. 2013:4590–4595. DOI:10.1109/IROS.2013.6697016.
  • Rus D , Tolley MT . Design, fabrication and control of soft robots. Nature 2015;521:467–475. DOI:10.1038/nature14543.
  • Marchese AD , Katzschmann RK , Rus D . A recipe for soft fluidic elastomer robots. Soft Robot. 2015;2:7–25. DOI:10.1089/soro.2014.0022.
  • Robinson SS , O’Brien KW , Zhao H , et al . Integrated soft sensors and elastomeric actuators for tactile machines with kinesthetic sense. Extrem Mech Lett. 2015;5:47–53. DOI:10.1016/j.eml.2015.09.005.
  • Ahn S-H , Lee K-T , Kim H-J , et al . Smart soft composite: an integrated 3D soft morphing structure using bend-twist coupling of anisotropic materials. Int J Precis Eng Manuf. 2012;13:631–634. DOI:10.1007/s12541-012-0081-8.
  • Cheng N , Ishigami G , Hawthorne S , et al . Design and analysis of a soft mobile robot composed of multiple thermally activated joints driven by a single actuator. 2010 IEEE Int Conf Robot Autom, Anchorage, AK, USA. IEEE 2010:5207–5212. DOI:10.1109/ROBOT.2010.5509247.
  • Polygerinos P , Wang Z , Galloway KC , et al . Soft robotic glove for combined assistance and at-home rehabilitation. Rob Auton Syst. 2015;73:135–143. DOI:10.1016/j.robot.2014.08.014.
  • Maeder-York P , Clites T , Boggs E , et al . Biologically inspired soft robot for thumb rehabilitation. J Med Device. 2014;8:20934. DOI:10.1115/1.4027031.
  • Menguc Y , Park Y-L , Pei H , et al . Wearable soft sensing suit for human gait measurement. Int J Rob Res. 2014;33:1748–1764. DOI:10.1177/0278364914543793.
  • Zhang Y , Kim WS . Highly sensitive flexible printed accelerometer system for monitoring vital signs. Soft Robot. 2014;1:132–135. DOI:10.1089/soro.2014.0003.
  • Connolly F , Walsh CJ , Bertoldi K . Automatic design of fiber-reinforced soft actuators for trajectory matching. Proc Natl Acad Sci. 2016:201615140. DOI:10.1073/pnas.1615140114.
  • Mutlu R , Alici G , in het Panhuis M , et al . 3D printed flexure hinges for soft monolithic prosthetic fingers. Soft Robot. 2016;3:120–133. DOI:10.1089/soro.2016.0026.
  • Muth JT , Vogt DM , Truby RL , et al . Embedded 3D printing of strain sensors within highly stretchable elastomers. Adv Mater. 2014:1–6. DOI:10.1002/adma.201400334.
  • Frutiger A , Muth JT , Vogt DM , et al . Capacitive soft strain sensors via multicore-shell fiber printing. Adv Mater. 2015;27:2440–2446. DOI:10.1002/adma.201500072.
  • Someya T , Kato Y , Sekitani T , et al . Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes. Proc Natl Acad Sci USA. 2005;102:12321–12325. DOI:10.1073/pnas.0502392102.
  • Cho kJ , Koh JS , Kim S , et al . Review of manufacturing processes for soft biomimetic robots. Int J Precis Eng Manuf. 2009;10:171–181. DOI:10.1007/s12541-009-0064-6.
  • Ahn SH , Lee KT , Kim HJ , et al . Smart soft composite: an integrated 3D soft morphing structure using bend-twist coupling of anisotropic materials. Int J Precis Eng Manuf. 2012;13:631–634. DOI:10.1007/s12541-012-0081-8.
  • Lind JU , Busbee TA , Valentine AD , et al . Instrumented cardiac microphysiological devices via multimaterial three-dimensional printing. Nat Mater.2017;16:303–308. DOI:10.1038/nmat4782.
  • Roche ET , Wohlfarth R , Overvelde JTB , et al . A bioinspired soft actuated material. Adv Mater. 2014;26:1200–1206. DOI:10.1002/adma.201304018.
  • Lewis JA . Direct ink writing of 3D functional materials. Adv Funct Mater. 2006;16:2193–2204. DOI:10.1002/adfm.200600434.
  • Hockaday LA , Kang KH , Colangelo NW , et al . Rapid 3D printing of anatomically accurate and mechanically heterogeneous aortic valve hydrogel scaffolds. Biofabrication 2012;4:35005. DOI:10.1088/1758-5082/4/3/035005.
  • Wei Y , Chen Y , Ren T , et al . Variable stiffness robotic gripper based on integrated soft actuating and particle jamming. Soft Robot. 2016;3:134–143. DOI:10.1089/soro.2016.0027.
  • Bogue R . Flexible and soft robotic grippers: the key to new markets? Ind Robot An Int J. 2016;43(3):258–263.
  • Rost A , Schädle S . The SLS-generated soft robotic hand – an integrated approach using additive manufacturing and reinforcement learning. Proc 2013 12th Int Conf Mach Learn Appl ICMLA 2013, Miami, FL, USA. 2013;1:215–220. DOI:10.1109/ICMLA.2013.44.
  • Morrison RJ , Hollister SJ , Niedner MF , et al . Mitigation of tracheobronchomalacia with 3D-printed personalized medical devices in pediatric patients. Sci Transl Med. 2015;7:285ra64. DOI:10.1126/scitranslmed.3010825.
  • Schumacher CM , Loepfe M , Fuhrer R , et al . 3D printed lost-wax casted soft silicone monoblocks enable heart-inspired pumping by internal combustion. RSC Adv. 2014;4:16039. DOI:10.1039/C4RA01497A.
  • Chan V , Jeong JH , Bajaj P , et al . Multi-material bio-fabrication of hydrogel cantilevers and actuators with stereolithography. Lab Chip. 2012;12:88–98. DOI:10.1039/c1lc20688e.
  • Roche ET , Horvath MA , Wamala I , et al . Soft robotic sleeve supports heart function. Sci Transl Med. 2017:1–12.
  • Raman R , Cvetkovic C , Bashir R . A modular approach to the design, fabrication, and characterization of muscle-powered biological machines. Nat Protoc. 2017;12:519–533. DOI:10.1038/nprot.2016.185.
  • Petruska AJ , Nelson BJ . Soft micro-robots for military medicine. HDIAC J. 2017:25–27.
  • Nelson BJ , Kaliakatsos IK , Abbott JJ . Microrobots for minimally invasive medicine. Annu Rev Biomed Eng. 2010;12:55–85. DOI:10.1146/annurev-bioeng-010510-103409.
  • Sliker LJ , Kern MD , Schoen JA , et al . Surgical evaluation of a novel tethered robotic capsule endoscope using micro-patterned treads. Surg Endosc Other Interv Tech. 2012;26:2862–2869. DOI:10.1007/s00464-012-2271-y.