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Gallium-Based Liquid Metal Amalgams: Transitional-State Metallic Mixtures (TransM2ixes) with Enhanced and Tunable Electrical, Thermal, and Mechanical Properties
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-10-04 00:00:00 , DOI: 10.1021/acsami.7b10256 Jianbo Tang 1 , Xi Zhao , Jing Li , Rui Guo 1 , Yuan Zhou , Jing Liu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-10-04 00:00:00 , DOI: 10.1021/acsami.7b10256 Jianbo Tang 1 , Xi Zhao , Jing Li , Rui Guo 1 , Yuan Zhou , Jing Liu 1
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Metals are excellent choices for electrical- and thermal-current conducting. However, either the stiffness of solid metals or the fluidity of liquid metals could be troublesome when flexibility and formability are both desired. To address this problem, a reliable two-stage route to improve the functionalities of gallium-based liquid metals is proposed. A series of stable semiliquid/semisolid gallium-based liquid metal amalgams with well-controlled particle packing ratios, which we call TransM2ixes, are prepared and characterized. Through effectively packing the liquid metal with copper particles (which are found to turn into intermetallic compound, CuGa2, after dispersing), remarkable enhancements in electrical conductivity (6 × 106 S m–1, ∼80% increase) and thermal conductivity (50 W m–1 K–1, ∼100% increase) are obtained, making the TransM2ixes stand out from current conductive soft materials. The TransM2ixes also exhibit appealing semiliquid/semisolid mechanical behaviors such as excellent adhesion, tunable formability, and self-healing ability. As a class of highly conductive yet editable metallic mixtures, the TransM2ixes demonstrate potential applications in fields like printed and/or flexible electronics and thermal interface materials, as well as other circumstances where the flexibility and conductivity of interfaces and connections are crucial.
中文翻译：
镓基液态金属汞合金：具有增强和可调的电，热和机械性能的过渡态金属混合物（TransM 2 ixes）
金属是导电和导热电流的极佳选择。但是，当同时需要柔韧性和可成型性时，固体金属的刚度或液体金属的流动性可能会很麻烦。为了解决这个问题，提出了一种可靠的两步法来改善镓基液态金属的功能。制备并表征了一系列稳定的半液体/半固体镓基液态金属汞齐，其颗粒填充比得到了很好的控制，我们称其为TransM 2 ixes。通过用铜颗粒（分散后发现变成金属间化合物CuGa 2）有效地填充液态金属，电导率显着提高（6×10 6 S m –1），增加了约80％）和热导率（增加了50 W m –1 K –1，增加了约100％），使TransM 2 ix在当前的导电软材料中脱颖而出。TransM 2 ixes还具有吸引人的半液体/半固体机械性能，例如出色的附着力，可调节的可成型性和自修复能力。作为一类高导电性且可编辑的金属混合物，TransM 2 ixs在印刷和/或柔性电子和热界面材料等领域以及界面和连接的柔韧性和导电性至关重要的其他情况下展示了潜在的应用。
更新日期：2017-10-04
中文翻译：
镓基液态金属汞合金：具有增强和可调的电，热和机械性能的过渡态金属混合物（TransM 2 ixes）
金属是导电和导热电流的极佳选择。但是，当同时需要柔韧性和可成型性时，固体金属的刚度或液体金属的流动性可能会很麻烦。为了解决这个问题，提出了一种可靠的两步法来改善镓基液态金属的功能。制备并表征了一系列稳定的半液体/半固体镓基液态金属汞齐，其颗粒填充比得到了很好的控制，我们称其为TransM 2 ixes。通过用铜颗粒（分散后发现变成金属间化合物CuGa 2）有效地填充液态金属，电导率显着提高（6×10 6 S m –1），增加了约80％）和热导率（增加了50 W m –1 K –1，增加了约100％），使TransM 2 ix在当前的导电软材料中脱颖而出。TransM 2 ixes还具有吸引人的半液体/半固体机械性能，例如出色的附着力，可调节的可成型性和自修复能力。作为一类高导电性且可编辑的金属混合物，TransM 2 ixs在印刷和/或柔性电子和热界面材料等领域以及界面和连接的柔韧性和导电性至关重要的其他情况下展示了潜在的应用。
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