3D printing stretchable and compressible porous structures by polymerizable emulsions for soft robotics
文献信息
Ouriel Bliah, Seonggun Joe, Roei Reinberg, Lucia Beccai
UV-curable 3D printing compositions for the fabrication of stretchable and flexible porous structures for soft robotics are presented. The stereolithography-based printing compositions are water-in-oil (W/O) emulsions in which water droplets are the pore-forming material, and the continuous phase is a stretchable polyurethane diacrylate (PUA). The porosity of the printed objects is controlled by the material's micro-porosity and by the macro-porosity obtained by a cellular design. The mechanical behavior can be tailored by the composition of the emulsion, providing both compliance and strength while utilizing a unique optimization methodology for fitting the ink to the 3D printer. This approach enables developing materials having superior mechanical properties, with the highest reported elongation-at-break for 3D printed porous structures, 450%. The emulsion-based printing compositions were utilized for fabricating a soft robotic gripper with unique actuation performance that could not be obtained with commonly used materials.
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Materials Horizons
Materials Horizons is a leading journal for the publication of exceptionally high quality, innovative materials science.The journal places an emphasis on original research that demonstrates a new concept or a new way of thinking (a conceptual advance), rather than primarily reporting technological improvements. However, outstanding articles featuring truly breakthrough developments such as record performance of materials alone may also be published in the journal. For work to be published it must be of significant general interest to our community-spanning readership. All articles published in Materials Horizons from 2021 onwards will be indexed in MEDLINE©
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