Skin-Inspired Hydrogel-Elastomer Hybrid Forms a Seamless Interface by Autonomous Hetero-Self-Healing

• DOI: 10.1021/acsapm.0c00925
• Publication Date: 2020-10-19T20:37:44Z
• Authors: Sung-Ho Shin; Seon-Mi Kim; Hyeonyeol Jeon; Sung Yeon Hwang; Dongyeop X. Oh; Jeyoung Park
• Keywords: Interface (matter)

Inspired by the human skin, a wholly self-healing electronic-skin (e-skin) is designed monolithic combination of dermis-like hydrogel for conductivity and an epidermis-like thermoplastic polyurethane (TPU) elastomer protection. The hydrogen-bond-mediated "heteroself-healing" through simple assembly this hydrogel-elastomer hybrid forms seamless interface with strong adhesion. A low degree microphase-separated TPU promotes heteroswapping hydrogen bonds at interface. e-skin recovers all mechanical, electrical, strain-sensing performances as original recontacting cut pieces room temperature. This polymer-based provides insights in field soft electronics.