TY - JOUR
T1 - Self-Powered Sweat-Responsive Structural Color Display
AU - Kim, Taebin
AU - Park, Tae Hyun
AU - Lee, Jae Won
AU - Lee, Dongwook
AU - Mun, Seungsoo
AU - Kim, Gwangmook
AU - Kim, Yeonji
AU - Kim, Gwanho
AU - Park, Jong Woong
AU - Lee, Kyuho
AU - Lee, Seung Won
AU - Jeon, Seungbae
AU - Ryu, Du Yeol
AU - Shim, Wooyoung
AU - Kim, Jayoung
AU - Park, Cheolmin
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024/5/29
Y1 - 2024/5/29
N2 - Despite the remarkable progress in the development of sweat sensors, self-powered sweat-responsive sensing displays that detect sweat in electric signals with simultaneous and direct visualization of the sweat is rarely demonstrated. Here, a self-powered sweat-responsive structural color (SC) display enabled by ionomer-doped block copolymer (BCP) photonic crystals (PCs) is presented. The sweat-responsive BCP PC is developed by employing a cross-linking single-mobile ionomer (SMI) with mobile anions anchored to immobile polycations to a 1-D 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. Moreover, the mobile anions periodically confined in the SMI-doped BCP PC harvest triboelectric energy, giving rise to a high-power density of ≈0.774 Mw cm−2. Cation-sensitive SC variation is observed in the SMI-doped BCP PC, allowing the visualization of sweat containing various cations. A skin-patchable self-powered sweat-responsive display is demonstrated in which kirigami-patterned SMI-doped BCP PC incorporated in the display can withstand up to 50% strain during exercise. Sweat from the exercise is visualized via SC display and measured using both ionic resistance changes and triboelectric signals. In addition, the integration of sweat sensing membrane into SMI-doped BCP PC enables the quantification of sweat.
AB - Despite the remarkable progress in the development of sweat sensors, self-powered sweat-responsive sensing displays that detect sweat in electric signals with simultaneous and direct visualization of the sweat is rarely demonstrated. Here, a self-powered sweat-responsive structural color (SC) display enabled by ionomer-doped block copolymer (BCP) photonic crystals (PCs) is presented. The sweat-responsive BCP PC is developed by employing a cross-linking single-mobile ionomer (SMI) with mobile anions anchored to immobile polycations to a 1-D 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. Moreover, the mobile anions periodically confined in the SMI-doped BCP PC harvest triboelectric energy, giving rise to a high-power density of ≈0.774 Mw cm−2. Cation-sensitive SC variation is observed in the SMI-doped BCP PC, allowing the visualization of sweat containing various cations. A skin-patchable self-powered sweat-responsive display is demonstrated in which kirigami-patterned SMI-doped BCP PC incorporated in the display can withstand up to 50% strain during exercise. Sweat from the exercise is visualized via SC display and measured using both ionic resistance changes and triboelectric signals. In addition, the integration of sweat sensing membrane into SMI-doped BCP PC enables the quantification of sweat.
KW - block copolymer photonic crystals
KW - self-powered sensing display
KW - single-mobile ionomers
KW - sweat-responsive structural color
KW - triboelectrification
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U2 - 10.1002/adfm.202314721
DO - 10.1002/adfm.202314721
M3 - Article
AN - SCOPUS:85184238340
SN - 1616-301X
VL - 34
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 22
M1 - 2314721
ER -