TY - JOUR
T1 - Humidity-resistive, elastic, transparent ion gel and its use in a wearable, strain-sensing device
AU - Son, Young Jun
AU - Bae, Jin Woo
AU - Lee, Ho Jung
AU - Bae, Seonghyun
AU - Baik, Seunghyun
AU - Chun, Kyoung Yong
AU - Han, Chang Soo
N1 - Funding Information:
This work was supported by a Korea University Grants and National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (NRF-2019R1A2C1002355 and NRF-2018R1A2A1A05023556).
Publisher Copyright:
This journal is © The Royal Society of Chemistry.
PY - 2020/3/28
Y1 - 2020/3/28
N2 - With the growing interest in human-electronics interaction, the development of ion gels that operate in response to variable human movement is widely spreading. However, conventional ion gels, based on hydrogel and non-hydrogel materials, have the fatal disadvantages of vulnerability to humidity and lack of transparency. Therefore, the need for an ion gel to satisfy all the requirements of elasticity, toughness, transparency, conductivity, and strong resistivity under humidity is emerging. Here, we demonstrate a polyvinylchloride (PVC)-based conductive ion gel with humidity-insensitive properties. To impart conductivity to the PVC gel, we use an ionic liquid. The prepared ion gel retains its elasticity with repeated tensile cycles of (200% strain) up to thirty times, and it exhibits ∼93% transparency and ∼40 kJ m-3 of toughness. In addition, excellent performance of this ion gel as a strain sensor was obtained, giving a conductivity increase with the factor of 100 compared with raw PVC gel. We show its application in human motion using a glove attached to the ion gel to monitor sign language and control a mouse pointer on the screen.
AB - With the growing interest in human-electronics interaction, the development of ion gels that operate in response to variable human movement is widely spreading. However, conventional ion gels, based on hydrogel and non-hydrogel materials, have the fatal disadvantages of vulnerability to humidity and lack of transparency. Therefore, the need for an ion gel to satisfy all the requirements of elasticity, toughness, transparency, conductivity, and strong resistivity under humidity is emerging. Here, we demonstrate a polyvinylchloride (PVC)-based conductive ion gel with humidity-insensitive properties. To impart conductivity to the PVC gel, we use an ionic liquid. The prepared ion gel retains its elasticity with repeated tensile cycles of (200% strain) up to thirty times, and it exhibits ∼93% transparency and ∼40 kJ m-3 of toughness. In addition, excellent performance of this ion gel as a strain sensor was obtained, giving a conductivity increase with the factor of 100 compared with raw PVC gel. We show its application in human motion using a glove attached to the ion gel to monitor sign language and control a mouse pointer on the screen.
UR - http://www.scopus.com/inward/record.url?scp=85082658999&partnerID=8YFLogxK
U2 - 10.1039/d0ta00090f
DO - 10.1039/d0ta00090f
M3 - Article
AN - SCOPUS:85082658999
VL - 8
SP - 6013
EP - 6021
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 12
ER -