Super Tough and Spontaneous Water‐Assisted Autonomous Self‐Healing Elastomer for Underwater Wearable Electronics (Adv. Sci. 21/2021)

Biomimetic Spun Silk Ionotronic Fibers for Intelligent Discrimination of Motions and Tactile Stimuli

“…More quantitative tensile measurement results show that under cyclic stretching deformations with an amplitude of 60% and at a fixed rate of 200 mm min −1 , the hysteresis in the SSIF was only 20.2% after 100 cycles (Figure 2C). This hysteresis value was 1.1-3.1-fold smaller than that of previously reported ionoelastomers, including polyacrylamide/phenylboronic acid-ionic liquid/cellulose nanofibril hydrogels, [44] polyacrylic acid elastomers, [45] and poly(dimethylsiloxane) (PDMS) elastomers, [46,47] and even 1.7-2.7-fold smaller than commonly used rubbers, such as silicone and functional rubbers, [48,49] as well as bioelastomers, such as organohydrogels, [50,51] cellulosic hydrogels, [52][53][54] and silk-based hydrogels. [55,56] More remarkably, mechanical instabilities were not observed in the SSIFs during the cyclic deformations due to the reinforcing effects of the rigid SMFs (Table S1, Supporting Information).…”

Recent progress in self-healable energy harvesting and storage devices – a future direction for reliable and safe electronics

“…Therefore self-healing (SH) of devices without human intervention is needed to solve this problem. 5–7…”

“…Therefore self-healing (SH) of devices without human intervention is needed to solve this problem. [5][6][7] Conventional polymer materials and polymer-based binders used in the electrodes and electrolytes can break down on repeated deformation during cycling leading to the failure of devices while operating. 8 SH feature helps the biological systems in nature to survive from damage and extends its lifetime.…”