Autonomous alignment and healing in multilayer soft electronics using immiscible dynamic polymers
Autonomous alignment and healing in multilayer soft electronics using immiscible dynamic polymers
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DOI：
10.1126/science.adh0619
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发表时间：
2023-06
期刊：
影响因子：
56.9
通讯作者：
Christopher B. Cooper;Samuel E. Root;Lukas Michalek;Shuai Wu;J. Lai;Muhammad Khatib;Solomon T. Oyakhire;Renee Zhao;Jian Qin;Zhenan Bao
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文献类型：
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作者：
Christopher B. Cooper;Samuel E. Root;Lukas Michalek;Shuai Wu;J. Lai;Muhammad Khatib;Solomon T. Oyakhire;Renee Zhao;Jian Qin;Zhenan Bao
自我修复的软电子和机器人设备可以像人类皮肤一样从损伤中自动恢复。虽然目前的设备使用单一类型的动态聚合物的所有功能层，以确保强大的层间粘合，这种方法需要手动层对齐。在这项研究中，我们使用了两种动态聚合物，这两种聚合物具有不混溶的主链，但相同的动态键，以保持层间粘附力，同时使愈合过程中的自主重新排列。这些动态聚合物表现出弱互穿和粘合界面，其宽度可调。当多层聚合物膜在损伤后未对齐时，这些结构在愈合期间自动重新对齐以最小化界面自由能。我们制造了具有导电，介电和磁性颗粒的设备，这些颗粒在损坏后可以在功能上愈合，使薄膜压力传感器，磁性组装软机器人和水下电路组装成为可能。描述编辑总结使用软材料制造机器人设备的一个优点是有更大的自我修复的范围，但多层设备的挑战是确保损坏后的重新对齐。库珀等人提出了一种用于修复多层和功能性聚合物材料的方法，该方法通过显示如何利用不同聚合物结构单元之间的动态氢键相互作用和相分离的组合来实现多层聚合物膜的同时自主重新排列和修复。这种方法可以恢复复杂聚合物复合材料的机械和功能特性，甚至可以实现水下自组装。- 马克·S Lavine Soft电子设备和机器人无需人工干预即可自愈。
Self-healing soft electronic and robotic devices can, like human skin, recover autonomously from damage. While current devices use a single type of dynamic polymer for all functional layers to ensure strong interlayer adhesion, this approach requires manual layer alignment. In this study, we used two dynamic polymers, which have immiscible backbones but identical dynamic bonds, to maintain interlayer adhesion while enabling autonomous realignment during healing. These dynamic polymers exhibit a weakly interpenetrating and adhesive interface, whose width is tunable. When multilayered polymer films are misaligned after damage, these structures autonomously realign during healing to minimize interfacial free energy. We fabricated devices with conductive, dielectric, and magnetic particles that functionally heal after damage, enabling thin-film pressure sensors, magnetically assembled soft robots, and underwater circuit assembly. Description Editor’s summary One advantage of using soft materials for robotic devices is that there is greater scope for self-healing, but a challenge for multilayer devices is to ensure realignment after damage. Cooper et al. present a method for healing multilayered and functional polymer materials by showing how a combination of dynamic hydrogen-bonding interactions and phase separation between different polymeric building blocks can be leveraged to achieve simultaneous autonomous realignment and healing of multilayered polymer films. This approach can restore both the mechanical and functional properties of complex polymer composites and even enables underwater self-assembly. —Marc S. Lavine Soft electronic devices and robots heal themselves without manual intervention.