You can also search for this author in acknowledges financial support from a Samsung Scholarship.These authors contributed equally: Yoonho Kim, Hyunwoo Yuk, Ruike ZhaoSoft Active Materials Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USAHarvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USADepartment of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ, USADepartment of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USAYou can also search for this author in Morphable 3D mesostructures and microelectronic devices by multistable buckling mechanics. Our paper published in Nature can be found here: https://go.nature.com/2l5H0B8. Printing under the applied field of 50 mT yields a magnetic moment density that corresponds to 63%–64% of the maximum achievable magnetization at each volume fraction of NdFeB particles.This file contains Supplementary Text and Data, and Supplementary Figure 1.A straight line printed with an alternating magnetization pattern rapidly transforms into an ‘m’ shape under the applied magnetic field and quickly reverts to its original shape upon removal of the applied field.Various two-dimensional planar structures, including two annular rings with equidistant and varying -magnitude alternating magnetization patterns, a Miura-ori pattern, a hollow cross and quadrupedal and hexapedal structures, exhibit fast and reversible transformations via magnetic actuations.This video shows the overall process of (i) printing a 3D construct with programmed magnetic domains, assisted by the use of support ink and (ii) actuating the printed structure by magnetic fields.Various 3D structures, including two adjoining hexagonal tubes with high aspect ratios and a pyramid-shaped thin-walled construct, exhibit fast and reversible transformations via magnetic actuations.Various 3D auxetic structures, or mechanical metamaterials, exhibit fast shrinkage and recovery in both length and width via magnetic actuation.The reconfigurable electronic device exhibits different electronic functions depending on the direction of applied magnetic fields.The hexapedal structure exhibits a diverse set of interactions, including stopping, catching, holding and releasing of a glass ball, under applied magnetic fields.The hexapedal structure wraps its body and rotates along a horizontal axis under a rotating magnetic field to create rolling-based locomotion, which allows the hexapedal structure to move forwards and backwards depending on the rolling direction.Sudden reversal of the applied field direction while attenuating the strength triggers drastic release of the combined elastic and magnetic potential energies that are converted to kinetic energy, creating a horizontal leap of the demonstrated 3D auxetic structure. Wehner, M. et al. designed and fabricated the printed structures and demonstrated their functions. and X.Z. MIT MechE website. Babaee, S. et al. We thank D. Bono for help in magnetic characterizations. You can also search for this author in PubMed Google Scholar ... Sign up for the Nature Briefing newsletter — what matters in … The uniformly magnetized samples are printed in the absence of external fields, cured, and then magnetized under impulsive fields (about 2.7 T). Rahmer, J., Stehning, C. & Gleich, B. Spatially selective remote magnetic actuation of identical helical micromachines. and X.Z. acknowledges financial support from Harvard-MIT Division of Health Sciences and Technology. Zhang, Y. H. et al. Multi-shape active composites by 3D printing of digital shape memory polymers. Y.K. Y.K., H.Y. Fusco, S. et al. Ultrafast digital printing toward 4D shape changing materials. Ware, T. H., McConney, M. E., Wie, J. J., Tondiglia, V. P. & White, T. J. Voxelated liquid crystal elastomers.

and H.Y. Gladman, A. S., Matsumoto, E. A., Nuzzo, R. G., Mahadevan, L. & Lewis, J. and S.A.C. You are using a browser version with limited support for CSS. An integrated microrobotic platform for on-demand, targeted therapeutic interventions. performed the simulations. Active scaffolds for on-demand drug and cell delivery. Xuanhe Zhao (赵选贺) Professor, Massachusetts Institute of Technology. Erb, R. M., Martin, J. J., Soheilian, R., Pan, C. & Barber, J. R. Actuating soft matter with magnetic torque. We use cookies to help improve your experience.

Magnetic self-assembly of three-dimensional surfaces from planar sheets. View author publications. Lum, G. Z. et al. developed materials and methods of printing and performed material characterizations. Thank you for visiting nature.com. Kim, J., Hanna, J. Written by Yoonho Kim and Xuanhe Zhao at MIT. Li, W. et al. Y.K., H.Y., R.Z. Zhao, X. H. et al. 3D soft metamaterials with negative Poisson’s ratio. Zhang, Q., Zhang, K. & Hu, G. Smart three-dimensional lightweight structure triggered from a thin composite sheet via 3D printing technique. A mechanically driven form of kirigami as a route to 3D mesostructures in micro/nanomembranes.

designed the study and interpreted the results. developed the theory for soft materials with ferromagnetic domains, R.Z. Mar 05, 2019. Wu, J. et al. Internet Explorer).

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