Liquid metal-elastomer composites for water-resilient soft electronics

被引:6
|
作者
Barron, Edward J., III [1 ,2 ]
Williams, Ella T. [1 ]
Wilcox, Brittan T. [1 ]
Ho, Dong Hae [1 ]
Bartlett, Michael D. [1 ,2 ]
机构
[1] Virginia Tech, Mech Engn Soft Mat & Struct Lab, Blacksburg, VA 24061 USA
[2] Virginia Tech, Macromol Innovat Inst, Blacksburg, VA USA
关键词
aging; elastomer; electrical conductivity; liquid metal; soft electronics; WEARABLE HEALTH; CORROSION; COPPER; INHIBITION; SEALANTS; SEAWATER;
D O I
10.1002/pol.20230616
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Liquid metal-elastomer composites have immense potential for emerging electronic applications due to their exceptional mechanical and functional properties. Underwater exploration is one area of interest for these composites, where divers or robots could benefit from wearable sensing, health monitoring, and energy harvesting. However, the influence of water submersion on liquid metal composites is not well understood. Here, the effect of underwater environments on the mechanical, thermal, and electrical properties of liquid metal composites exposed to month-long aging is quantified. Under most conditions, liquid metal composites maintain their initial properties over the course of aging. However, for composites with high volume loadings of liquid metal (phi$$ \phi $$ = 80%) exposed to saltwater conditions, a decrease up to 70% in tensile modulus and up to 44% in thermal conductivity can occur. The aging environments were not shown to have an effect on the electrical conductivity of the composites. Liquid metal composites are then shown to outperform traditional copper electrodes after saltwater aging, demonstrating these soft, multifunctional composites as strong candidates for wearable, water-resistant devices and machines. image
引用
收藏
页码:3818 / 3829
页数:12
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