Indirect 3D and 4D Printing of Soft Robotic Microstructures | Zendy

de Marco Carmela | Zendy; Alcântara Carlos C. J. | Zendy; Kim Sangwon | Zendy; Briatico Francesco | Zendy; Kadioglu Ahmet | Zendy; de Bernardis Gaston | Zendy; Chen Xiangzhong | Zendy; Marano Claudia | Zendy; Nelson Bradley J. | Zendy; Pané Salvador | Zendy

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Indirect 3D and 4D Printing of Soft Robotic Microstructures

Author(s) -

de Marco Carmela,

Alcântara Carlos C. J.,

Kim Sangwon,

Briatico Francesco,

Kadioglu Ahmet,

de Bernardis Gaston,

Chen Xiangzhong,

Marano Claudia,

Nelson Bradley J.,

Pané Salvador

Publication year - 2019

Publication title -

advanced materials technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.184

H-Index - 42

ISSN - 2365-709X

DOI - 10.1002/admt.201900332

Subject(s) - 3d printing , fabrication , materials science , microstructure , 3d printed , soft materials , 3d printer , nanotechnology , gelatin , template , soft tissue , engineering drawing , computer science , biomedical engineering , mechanical engineering , composite material , engineering , surgery , chemistry , alternative medicine , pathology , medicine , biochemistry

The development of 3D soft‐robotic components is currently hindered by material limitations associated with conventional 3D printing techniques. To overcome this challenge, an indirect 3D printing approach based on the fabrication of 3D printed sacrificial templates is proposed. High‐resolution micromolds produced by direct laser writing are infused with polymers and then dissolved, leading to the final 3D printed soft microstructures. This method is used to indirectly print 3D and 4D soft microrobots. The versatility of this technique is shown through the fabrication and actuation of gelatin helices filled with magnetic nanoparticles. In addition, it is shown that stent‐like microstructures with shape memory properties can be manufactured with minimum features of 5 µm, which is 40 times smaller than those reported to date. In summary, the utilization of this technique can overcome obstacles associated with the fabrication of soft microrobots and surgical tools for minimally invasive surgery.

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