Gallium-Indium-Tin Liquid Metal Nanodroplet-Based Anisotropic Conductive Adhesives for Flexible Integrated Electronics
Gallium-Indium-Tin Liquid Metal Nanodroplet-Based Anisotropic Conductive Adhesives for Flexible Integrated Electronics
复制标题
用于柔性集成电子产品的基于镓-铟-锡液态金属纳米液滴的各向异性导电粘合剂
DOI：
10.1021/acsanm.0c02870
复制
发表时间：
2021-01-06
影响因子：
5.9
通讯作者：
Du, Yi
中科院分区：
文献类型：
--
作者：
Bo, Guyue;Yu, Huiwu;Du, Yi
与传统的焊点连接相比，各向异性导电胶（ACA）为小型电子器件的互连提供了一种高效、简单的方法。然而，由于缺乏耐用且具有成本效益的导电元件，ACAS在纳米电子学中的广泛应用仍然受到抑制。本文采用激光辐照和超声处理相结合的方法，成功地合成了一系列不同直径的核壳共晶镓铟锡液态金属（LM）纳米液滴。由于它们的高导电性和良好的流动性，这些LM ND被用作用于制造ACAS的软导电填料微米/纳米粒子。所制备的ND基ACA呈现出令人满意的各向异性导电性时，用于小规模的电子电路互连。即使在弯曲或扭曲操作模式下，柔性封装器件也保持了高度耐用的各向异性电性能。
Compared with traditional solder joint bonding, an anisotropic conductive adhesive (ACA) provides an efficient and simple method for the interconnection of small-scale electronics. The wider application of ACAS for nanoelectronics is still suppressed, however, by the lack of durable and cost-effective conductive components. Herein, a series of core-shell eutectic gallium-indium-tin liquid metal (LM) nanodroplets (NDs) with different diameters have been successfully synthesized and regulated by a combination of laser irradiation and sonication. Due to their high conductivity and good fluidity, these LM NDs were used as soft conductive filler micro/nanoparticles for fabricating ACAS. The as-prepared ND-based ACAs present satisfactory anisotropic conductivity when used to interconnect small-scale electronic circuits. Highly durable anisotropic electrical performance was also maintained in flexible packed devices, even under bending or twisting operation modes.