3D Printing Hydrogel-Based Soft and Biohybrid Actuators: A Mini-Review on Fabrication Techniques, Applications, and Challenges.
3D Printing Hydrogel-Based Soft and Biohybrid Actuators: A Mini-Review on Fabrication Techniques, Applications, and Challenges.
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DOI：
10.3389/frobt.2021.673533
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发表时间：
2021
影响因子：
3.4
通讯作者：
Webster-Wood V
中科院分区：
文献类型：
--
作者：
Sun W;Schaffer S;Dai K;Yao L;Feinberg A;Webster-Wood V
刺激响应性水凝胶由于其许多独特的性质，包括可调的机械性能和生物相容性，是软机器人应用的候选构建块。在过去的十年中，在使用天然存在的和合成的水凝胶开发软和生物混合致动器方面取得了重大进展，以满足对能够与脆弱的生物系统相互作用的机器日益增长的需求。三维（3D）打印技术的最新进展，无论是作为一个独立的制造工艺或与传统的制造技术集成，已经使水凝胶为基础的致动器的发展与按需的几何形状和致动模态。这篇小型综述调查了现有的研究工作，以激发使用水凝胶构建块的新型制造技术的发展，并确定潜在的未来方向。在这篇文章中，现有的3D制造技术的水凝胶致动器首先检查。接下来，现有的驱动机制，包括气动，液压，离子，脱水-再水化，和细胞动力驱动，审查与他们的优点和局限性进行了讨论。随后，基于水凝胶的致动器的应用，包括易碎物品，微型游泳者，可穿戴设备和折纸结构的顺应性处理，进行了描述。最后，使用现有技术制造功能致动器的挑战进行了讨论。
Stimuli-responsive hydrogels are candidate building blocks for soft robotic applications due to many of their unique properties, including tunable mechanical properties and biocompatibility. Over the past decade, there has been significant progress in developing soft and biohybrid actuators using naturally occurring and synthetic hydrogels to address the increasing demands for machines capable of interacting with fragile biological systems. Recent advancements in three-dimensional (3D) printing technology, either as a standalone manufacturing process or integrated with traditional fabrication techniques, have enabled the development of hydrogel-based actuators with on-demand geometry and actuation modalities. This mini-review surveys existing research efforts to inspire the development of novel fabrication techniques using hydrogel building blocks and identify potential future directions. In this article, existing 3D fabrication techniques for hydrogel actuators are first examined. Next, existing actuation mechanisms, including pneumatic, hydraulic, ionic, dehydration-rehydration, and cell-powered actuation, are reviewed with their benefits and limitations discussed. Subsequently, the applications of hydrogel-based actuators, including compliant handling of fragile items, micro-swimmers, wearable devices, and origami structures, are described. Finally, challenges in fabricating functional actuators using existing techniques are discussed.
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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