▎ 摘　　要

Suspending microscale droplets of liquid metals likeeutectic gallium-indium(EGaIn) in polydimethylsiloxane (PDMS) has been shown to dramaticallyenhance electrical permittivity without sacrificing the elasticityof the host PDMS matrix. However, increasing the dielectric constantof EGaIn-PDMS composites beyond previously reported valuesrequires high EGaIn loading fractions (>50% by volume) that canresultin substantial increases in density and loss of material integrity.In this work, we enhance permittivity without further increasing EGaInloading by incorporating polydopamine (PDA)-coated graphene oxide(GO) and partially reduced GO. In particular, we show that the combinationof EGaIn and PDA-GO within a PDMS matrix results in an elastomer compositewith a high dielectric constant (similar to 10-57), a low dissipationfactor (similar to 0.01), and rubber-like compliance and elasticity.