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首页> 外文期刊>Advanced Materials >Autonomous Surface Reconciliation of a Liquid-Metal Conductor Micropatterned on a Deformable Hydrogel
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Autonomous Surface Reconciliation of a Liquid-Metal Conductor Micropatterned on a Deformable Hydrogel

机译：可变形水凝胶中液态金属导体微图案的自主表面核性

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Spreading liquid droplets on solid surfaces is a core topic in physical chemistry with significant technological implications. Liquid metals, which are eutectic alloys of constituent metal atoms with low melting temperatures, are practically useful, but difficult to spread on solid surfaces because of their high surface tension. This makes it difficult to use liquid metals as deformable on-board microcircuitry electrodes, despite their intrinsic deformability. In this study, it is discovered that eutectic gallium-indium (EGaIn) can be spread onto the surface of chemically cross-linked hydrogels consisting of aliphatic alkyl chains with numerous hydroxyl groups (-OH), thus facilitating the development of directly micropatterned EGaIn electrodes. More importantly, EGaIn patterned on a hydrogel autonomously reconciliates its surface to form a firm hydrogel interface upon mechanical deformation of the hydrogel. This autonomous surface reconciliation of EGaIn on hydrogels allows researchers to reap the benefits of chemically modified hydrogels, such as reversible stretching, self-healing, and water-swelling capability, thereby facilitating the fabrication of superstretchable, self-healable, and water-swellable liquid-metal electrodes with very high conductance tolerance upon deformation. Such electrodes are suitable for a variety of deformable microelectronic applications.
机译：在固体表面上扩散液滴是物理化学中的核心主题，具有重要的技术意义。液体金属是具有低熔化温度的组成金属原子的共晶合金，实际上是有用的，但由于其高表面张力，难以在固体表面上铺展。这使得难以使用液体金属作为可变形的板载微电路电极，尽管它们的内在易变形性。在该研究中，发现共晶镓 - 铟（EGAIN）可以涂布到由具有许多羟基（-OH）的脂族烷基链组成的化学交联水凝胶表面上，从而促进直接微透明理由的EGAIN电极的开发。更重要的是，在水凝胶上图案化的Egain自治和解其表面以在水凝胶的机械变形时形成固有的水凝胶界面。 Egain在水凝胶上的这种自主表面核对使得研究人员能够获得化学改性水凝胶的益处，例如可逆拉伸，自愈和水溶胀性，从而促进制造超凝固，自愈的和可溶胀的液体在变形时具有非常高的电导耐受性的金属电极。这种电极适用于各种可变形的微电子应用。

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