In the era of 5 G, the rise in power density in miniaturized, flexible electronic devices has created an urgent need for thin, flexible, polymer-based electrically and thermally conductive nanocomposites to address challenges related to electromagnetic interference (EMI) and heat accumulation. However, the difficulties in establishing enduring and continuous transfer pathways for electrons and phonons using solid-rigid conductive fillers within insulative polymer matrices limit the development of such nanocomposites. Herein, we incorporate MXene-bridging-liquid metal (MBLM) solid-liquid bi-continuous electrical-thermal conductive networks within aramid nanofiber/polyvinyl alcohol (AP) matrices, resulting in the AP/MBLM nanocomposite with ultra-high electrical conductivity (3984 S/cm) and distinguished thermal conductivity of 13.17 W m⁻¹ K⁻¹. This nanocomposite exhibits excellent EMI shielding efficiency (SE) of 74.6 dB at a minimal thickness of 22 μm, and maintains high EMI shielding stability after enduring various harsh conditions. Meanwhile, the AP/MBLM nanocomposite also demonstrates promising heat dissipation behavior. This work expands the concept of creating thin films with high electrical and thermal conductivity.

The emerging slippery liquid-infused porous surfaces inspired by Nepenthes pitcher plants have attracted considerable attention because of their excellent self-cleaning properties and potential applications in novel microfluidics, microchips, and liquid transportation and liquid manipulation technologies. However, the development of anisotropic slippery surfaces is in its infancy. Although some information of anisotropic slippery surfaces has been reported, the factors influencing their self-healing properties and electrically driven droplet motion have not been deeply explored. To address this limitation, anisotropic slippery surfaces have been designed and prepared with directional, porous and conductive PCDTPT films and lubricants (silicone oils with different viscosities), which are used here to investigate the influencing factors of the self-healing properties and electrically driven droplet motion. The results elucidate that the critical self-healing thickness increases with increasing silicone oil viscosity and that low-viscosity silicone oils filling in the porous films can reduce the responsive voltage of the electrical control of droplet motion on the anisotropic slippery surfaces with the same lubricant layer thickness.