KAUST DepartmentPhysical Science and Engineering Division Materials Science and Engineering King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi Arabia
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Embargo End Date2022-09-21
Permanent link to this recordhttp://hdl.handle.net/10754/672003
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AbstractIn the booming development of flexible electronics represented by electronic skins, soft robots, and human–machine interfaces, 3D printing of hydrogels, an approach used by the biofabrication community, is drawing attention from researchers working on hydrogel-based stretchable ionotronic devices. Such devices can greatly benefit from the excellent patterning capability of 3D printing in three dimensions, as well as the free design complexity and easy upscale potential. Compared to the advanced stage of 3D bioprinting, 3D printing of hydrogel ionotronic devices is in its infancy due to the difficulty in balancing printability, ionic conductivity, shape fidelity, stretchability, and other functionalities. In this review, a guideline is provided on how to utilize the power of 3D printing in building high-performance hydrogel-based stretchable ionotronic devices mainly from a materials’ point of view, highlighting the systematic approach to balancing the printability, printing quality, and performance of printed devices. Various 3D printing methods for hydrogels are introduced, and then the ink design principles, balancing printing quality, printed functions, such as elastic conductivity, self-healing ability, and device (e.g., flexible sensors, shape-morphing actuators, soft robots, electroluminescent devices, and electrochemical biosensors) performances are discussed. In conclusion, perspectives on the future directions of this exciting field are presented.
CitationGe, G., Wang, Q., Zhang, Y., Alshareef, H. N., & Dong, X. (2021). 3D Printing of Hydrogels for Stretchable Ionotronic Devices. Advanced Functional Materials, 2107437. doi:10.1002/adfm.202107437
SponsorsThe work was supported by the NNSF of China (21805136, 62174085), Jiangsu Province Policy Guidance Plan (BZ2019014), Six talent peak innovation team in Jiangsu Province (TD-SWYY-009), “Taishan scholars” construction special fund of Shandong Province, and King Abdullah University of Science & Technology (KAUST).
JournalAdvanced Functional Materials