Mechanical sintering-induced conductive flexible self-healing eGaInSn@PDA NDs/TPU composite based on structural design to against liquid metal leakage

Liquid Metal Encased in Biomimic Polydopamine Armor to Reinforce Photothermal Conversion and Photothermal Stability

“…[16] Moreover, the peaks of In 3d and Sn 3d were also observed (Figure S5). [29] Importantly, the peak of Ga 3 + in PDA@GaInSn was shifted to a higher binding energy (20.2 eV) than that in GaInSn (19.9 eV), coming from the coordination interaction between PDA and Ga 2 O 3 . [30] These phenomena of N 1s and Ga 3d demonstrated that PDA was successfully selfpolymerized and closely connected with Ga 2 O 3 on the surface of PDA@GaInSn.…”

Structural design underpinning self-healing materials for electromagnetic interference shielding: coupling of dynamic polymer chemistry and electrical conductivity

“…78,79 However, in its natural state aer synthesis, LM is electrically insulating and requires activation (such as stretching and compression) to obtain conductivity. Wu et al 80 used a sintering process to deform and rupture LM nanodroplets to aggregate them and form a continuous conductive network (the product is referred to as eGaInSn@PDA ND). The resulting composite material can swily transition from an insulating state to a conductive state upon the application of mechanical pressure (Fig.…”

Interfacial interaction-induced super-wettability of gallium-based liquid metals: a review

“…41 Mechanical sintering assists in destroying the surface oxide layer of LM during the experimental process to achieve the effect of reactivating conductive and uid properties of LM, thus forming a continuous phase compound inside or on the surface of the substrate. 42 Mechanical sintering is widely used to restore the electrical conductivity of LM circuits and can overcome poor wettability of LM inks. However, mechanical sintering still has some limitations, and the uneven pressure action may lead to insufficient sintering in some areas and even destroy the ne shape of LM.…”