TY - JOUR
T1 - Printing paper-derived ultralight and highly sensitive E-skin for health monitoring and information encryption
AU - Lai, Qin Teng
AU - Liang, Hui Qiang
AU - Tang, Xin Gui
AU - Zhang, Dan
AU - Roy, Vellaisamy A.L.
AU - Sun, Qi Jun
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/3/5
Y1 - 2024/3/5
N2 - Simplified fabrication technology and excellent sensing performance are highly desired for the development of flexible and user-friendly wearable sensors. However, there is usually a trade-off between the simplicity of the fabrication technology and the sensing performance of the device. Recently, paper-based wearable sensors have attracted much attention due to their excellent flexibility, simplified preparation, and low cost etc. However, the pressure sensitivity of the paper-derived sensors is far from satisfactory. In this work, a strategy of pencil graphite frottage (PGF) is reported by employing sandpaper as template and a pencil sketch technique to achieve functional printing paper as pressure-sensitive layers for electronic skin (e-skin). As a result, the e-skin prepared by our PGF technique shows excellent reproducibility and pressure sensing performance, including a maximum sensitivity of 7202.2 kPa−1, a fast response time of 25.0 ms, and an excellent durability over 20,000 loading/unloading cycles, and high ambient stability (> 6 months). For application demonstration, the e-skins are applied to monitor human wrist pulses, acoustical vibration and information encryption. Furthermore, pressure sensing arrays are developed and employed to map the spatial pressure distribution, indicating potential application in intelligent robots and prosthetics. It is believed that the fabrication strategies proposed in this work can bring insight onto the other area of bionic e-skin and multifunctional sensor devices.
AB - Simplified fabrication technology and excellent sensing performance are highly desired for the development of flexible and user-friendly wearable sensors. However, there is usually a trade-off between the simplicity of the fabrication technology and the sensing performance of the device. Recently, paper-based wearable sensors have attracted much attention due to their excellent flexibility, simplified preparation, and low cost etc. However, the pressure sensitivity of the paper-derived sensors is far from satisfactory. In this work, a strategy of pencil graphite frottage (PGF) is reported by employing sandpaper as template and a pencil sketch technique to achieve functional printing paper as pressure-sensitive layers for electronic skin (e-skin). As a result, the e-skin prepared by our PGF technique shows excellent reproducibility and pressure sensing performance, including a maximum sensitivity of 7202.2 kPa−1, a fast response time of 25.0 ms, and an excellent durability over 20,000 loading/unloading cycles, and high ambient stability (> 6 months). For application demonstration, the e-skins are applied to monitor human wrist pulses, acoustical vibration and information encryption. Furthermore, pressure sensing arrays are developed and employed to map the spatial pressure distribution, indicating potential application in intelligent robots and prosthetics. It is believed that the fabrication strategies proposed in this work can bring insight onto the other area of bionic e-skin and multifunctional sensor devices.
KW - E-skin
KW - Health monitoring
KW - High sensitivity
KW - Information encryption
KW - PGF technique
UR - http://www.scopus.com/inward/record.url?scp=85181852440&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2023.173411
DO - 10.1016/j.jallcom.2023.173411
M3 - Article
AN - SCOPUS:85181852440
SN - 0925-8388
VL - 976
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 173411
ER -