通过表面涂层实现液态金属嵌入石墨烯的三维网络，实现柔性热管理。

IF 13 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Small Pub Date : 2024-10-03 DOI:10.1002/smll.202406574

Wenmei Luo, Baojie Wei, Tianlin Luo, Baowen Li, Guimei Zhu

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引用次数: 0

摘要

柔性电子器件的快速发展导致了对相关配件的大量需求，尤其是对高效柔性散热器的需求。液态金属（LM）的流动性使其成为实现柔性热界面材料（TIM）的候选材料。然而，如何将液态金属与导电导热网络相结合，实现导热性和柔性的同步提高，仍然是一项挑战。在这项工作中，通过超声将石墨烯纳米液滴涂覆在石墨烯纳米片（GN）上，然后将其与芳纶纳米纤维（ANF）结合，制成了高导电柔性 LM@GN/ANF 薄膜。研究发现，LM@GN/ANF 薄膜的导热系数为 5.67 W m-1 K-1，杨氏模量降低了 24.5%，因此适用于可穿戴设备和生物传感器等各种柔性电子应用。

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3D Network of Liquid Metal-Embedded Graphene via Surface Coating for Flexible Thermal Management.

The rapid growth of flexible electronics has led to significant demand for relevant accessories, particularly highly efficient flexible heat dissipators. The fluidity of liquid metal (LM) makes it a candidate for realizing flexible thermal interface materials (TIMs). However, it is still challenging to combine LM with a conductive thermal network to achieve the synchronous improvement of thermal conductivity and flexibility. In this work, highly conductive flexible LM@GN/ANF films are made by coating LM nano-droplets with graphene nanosheets (GN) via sonication, and then they are combined with aramid nanofibers (ANF). The LM@GN/ANF film is found to have a thermal conductivity of 5.67 W m^-1 K^-1 and a 24.5% reduction in Young's modulus, making it suitable for various flexible electronic applications such as wearable devices and biosensors.

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来源期刊

Small 工程技术-材料科学：综合

CiteScore

17.70

自引率

3.80%

发文量

1830

审稿时长

2.1 months

期刊介绍： Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.