Liquid metal-based soft, hermetic, and wireless-communicable seals for stretchable systems
Liquid metal-based soft, hermetic, and wireless-communicable seals for stretchable systems
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DOI：
10.1126/science.ade7341
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发表时间：
2023-02
期刊：
影响因子：
56.9
通讯作者：
Qingchen Shen;Modi Jiang;Ruitong Wang;Kexian Song;M. Vong;Woojin Jung;Febby Krisnadi;Ruyu Kan;Feiyu Zheng;B. Fu;P. Tao;Chengyi Song;Guoming Weng;Bo Peng;Jun Wang;W. Shang;M. Dickey;T. Deng
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文献类型：
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作者：
Qingchen Shen;Modi Jiang;Ruitong Wang;Kexian Song;M. Vong;Woojin Jung;Febby Krisnadi;Ruyu Kan;Feiyu Zheng;B. Fu;P. Tao;Chengyi Song;Guoming Weng;Bo Peng;Jun Wang;W. Shang;M. Dickey;T. Deng
软材料往往对气体具有高度的渗透性，这使得制造可伸缩的密封密封件变得困难。通过集成垫片，我们演示了液态金属作为可伸缩密封件的使用，液态金属既具有金属性质又具有流体性质。这种软密封件既可用于可伸缩电池，也可用于涉及挥发性流体(包括水和有机流体)的可伸缩热传递系统。电池在500次循环后的容量保持率约为72.5%，密封换热系统在拉伸和加热时的导热系数增加了约309瓦/米-开尔文。此外，随着信号传输窗口的加入，我们还演示了通过这种密封进行无线通信。这项工作提供了一条为软设备创建可伸缩但密封的包装设计解决方案的途径。描述可伸缩密封件可伸缩电子设备和技术的一个经常被忽视的方面是对材料的选择以对其进行密封保护。沈等人。为可伸缩设备设计了基于共晶镓铟的液态金属密封。液态金属的低气体渗透性和流体特性克服了其他材料在渗透性和模数之间的权衡。作者们展示了可伸缩电池和使用挥发性液体的热传递设备的保护作用。-MSL液态金属可伸缩薄膜用于保护柔性设备免受液体和气体的渗透。
Soft materials tend to be highly permeable to gases, making it difficult to create stretchable hermetic seals. With the integration of spacers, we demonstrate the use of liquid metals, which show both metallic and fluidic properties, as stretchable hermetic seals. Such soft seals are used in both a stretchable battery and a stretchable heat transfer system that involve volatile fluids, including water and organic fluids. The capacity retention of the battery was ~72.5% after 500 cycles, and the sealed heat transfer system showed an increased thermal conductivity of approximately 309 watts per meter-kelvin while strained and heated. Furthermore, with the incorporation of a signal transmission window, we demonstrated wireless communication through such seals. This work provides a route to create stretchable yet hermetic packaging design solutions for soft devices. Description Stretchable hermetic seals An often overlooked aspect of stretchable electronics and technology is the choice of materials to hermetically protect them. Shen et al. devised liquid metal hermetic seals based on eutectic gallium indium for stretchable devices. The low gas permeability and fluidic properties of liquid metals overcome the tradeoff between permeability and modulus that arises with other materials. The authors demonstrate the protection of a stretchable battery and a heat-transfer device that uses volatile liquids. —MSL Stretchable films of liquid metal are used to protect flexible devices from liquid and gas permeation.