Self-powered Sweat-responsive Structural Color Display with Ionoelastomer-doped Block Copolymers
발표자
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초록
내용
Despite the remarkable progress in the development of sweat sensors, sweat-responsive sensing displays that detect sweat in electric signals with simultaneous and direct visualization of the sweat is rarely demonstrated. Here, we present a self-powered sweat-responsive structural color display with ionomer-doped block copolymer photonic crystals. Our sweat-responsive BCP PC is developed by employing a chemically cross-linking ionoelastomer with mobile anions anchored to immobile polycations to a 1-dimensional BCP PC. The hydrophobic SMI-doped BCP PC is mechanically robust as well as water and temperature-resistive, exhibiting ionomer concentration-dependent full visible SCs. Cation-sensitive SC variation is observed in the SMI-doped BCP PC, allowing the detection of sweat containing various cations. Moreover, the mobile anions periodically confined in the SMI-doped BCP PC efficiently harvest triboelectric energy with the fast development of electric double layers in the individual BCP nanodomains.