Choi, Dong Yun Kim, Min Hyeong Oh, Yong Suk Jung, Soo-Ho Jung, Jae Hee Sung, Hyung Jin Lee, Hyung Woo Lee, Hye Moon 2024-01-20T02:31:17Z 2024-01-20T02:31:17Z 2021-09-05 2017-01-18 1944-8244 https://pubs.kist.re.kr/handle/201004/123187 A highly stretchable, low-cost strain sensor was successfully prepared using an extremely cost-effective ionic liquid of ethylene glycol/sodium chloride. The hysteresis performance of the ionic-liquid-based sensor was able to be improved by introducing a wavy-shaped fluidic channel diminishing the hysteresis by the viscoelastic relaxation of elastomers. From the simulations on visco-hyperelastic behavior of the elastomeric channel, we demonstrated that the wavy structure can offer lower energy dissipation compared to a flat structure under a given deformation. The resistance response of the ionic-liquid-based wavy (ILBW) sensor was fairly deterministic with no hysteresis, and it was well-matched to the theoretically estimated curves. The ILBW sensors exhibited a low degree of hysteresis (0.15% at 250%), low overshoot (1.7% at 150% strain), and outstanding durability (3000 cycles at 300% strain). The ILBW sensor has excellent potential for use in precise and quantitative strain detections in various areas, such as human motion monitoring, healthcare, virtual reality, and smart clothes. English American Chemical Society CARBON NANOTUBES ELASTOMERS SKIN TRANSPARENT ELECTRONICS DESIGN SOFT COMPOSITES NETWORKS FILMS Highly Stretchable, Hysteresis-Free Ionic Liquid -Based Strain Sensor for Precise Human Motion Monitoring Article 10.1021/acsami.6b12415 1 ACS Applied Materials & Interfaces, v.9, no.2, pp.1770 - 1780 ACS Applied Materials & Interfaces 9 2 1770 1780 scie scopus 000392458300066 2-s2.0-85026381166 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article CARBON NANOTUBES ELASTOMERS SKIN TRANSPARENT ELECTRONICS DESIGN SOFT COMPOSITES NETWORKS FILMS stretchable sensor strain sensor human motion detection ionic liquid viscoelastic effect