Hermetic stretchable seals enabled by a viscoplastic surface effect.

IF 38.5 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nature Materials Pub Date : 2025-10-17 DOI:10.1038/s41563-025-02386-5

Rui Xia,Chun Li,Yan Shao,Dong He,Jianfeng Yan,Mao Yu,Kangjie Chu,Huanhuan Yang,Daohang Cai,Guoli Chen,Yaqi Du,Guangfu Luo,Weishu Liu,Fuzeng Ren,Zhubing He,Yanhao Yu

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引用次数: 0

Abstract

Elastic seals safeguard stretchable electronics from reactive species in the surrounding environment. However, elastic contact with device modules and the intrinsic small-molecule permeability of elastomers limit the hermeticity of devices. Here we present a viscoplastic surface effect in polymeric elastomers for deriving sealing platforms with high hermeticity and large stretchability, made possible by controlling phase separations of partially miscible polar plastics within the near-surface region of block copolymer elastomers. The resulting viscoplastic surface allows the elastomer to form defect-free interfaces regardless of their size, materials chemistry and geometry. This capability facilitates the airtight integration of device modules to mitigate side leakage and enable the seamless assembly of high-potential gas barriers to prevent bulk penetration. A multilayer seal that incorporates scavenging components demonstrates properties that are as hermetic as aluminium foil while being stretchable like a rubber band. This breakthrough extends the operational lifetime of perovskite optoelectronics, hydrogel thermoelectrics and implantable bioelectronics without sacrificing their stretchability or efficiency.

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通过粘塑性表面效应实现密封可拉伸密封。

弹性密封保护可拉伸的电子产品免受周围环境中的反应性物质的影响。然而，与器件模块的弹性接触和弹性体固有的小分子渗透性限制了器件的密封性。在这里，我们提出了粘塑性表面效应的聚合物弹性体，以获得密封平台具有高密封性和大拉伸性，使可能通过控制部分混相极性塑料在嵌段共聚物弹性体的近表面区域的相分离。由此产生的粘塑性表面允许弹性体形成无缺陷的界面，无论其尺寸，材料化学和几何形状如何。这种能力有助于设备模块的密封集成，以减少侧泄漏，并实现高电位气体屏障的无缝组装，以防止大量渗透。多层密封件包含清除组件，具有铝箔的密封性能，同时又像橡皮筋一样可拉伸。这一突破延长了钙钛矿光电子器件、水凝胶热电器件和植入式生物电子器件的使用寿命，而不会牺牲它们的可拉伸性或效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Materials 工程技术-材料科学：综合

CiteScore

62.20

自引率

0.70%

发文量

221

审稿时长

3.2 months

期刊介绍： Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. It covers all applied and fundamental aspects of the synthesis/processing, structure/composition, properties, and performance of materials. The journal recognizes that materials research has an increasing impact on classical disciplines such as physics, chemistry, and biology. Additionally, Nature Materials provides a forum for the development of a common identity among materials scientists and encourages interdisciplinary collaboration. It takes an integrated and balanced approach to all areas of materials research, fostering the exchange of ideas between scientists involved in different disciplines. Nature Materials is an invaluable resource for scientists in academia and industry who are active in discovering and developing materials and materials-related concepts. It offers engaging and informative papers of exceptional significance and quality, with the aim of influencing the development of society in the future.