Self‐Powered Integrated Sensing System with In‐Plane Micro‐Supercapacitors for Wearable Electronics

Abstract

Self‐powered integrated sensor with high‐sensitivity physiological signals detection is indispensable for next‐generation wearable electronic devices. Herein, a Ti3C2Tx/CNTs‐based self‐powered resistive sensor with solar cells and in‐plane micro‐supercapacitors (MSCs) is successfully realized on a flexible styrene–ethylene/butylene–styrene (SEBS) electrospinning film. The prepared Ti3C2Tx/CNTs@SEBS/CNTs nanofiber membranes exhibit high electrical conductivity and mechanical flexibility. The laser‐assisted fabricated Ti3C2Tx/CNTs based‐MSCs demonstrate a high areal energy density of 52.89 and 9.56 µWh cm−2 with a corresponding areal power density of 0.2 and 4 mW cm−2. Additionally, the MSCs exhibit remarkable capacity retention of 90.62% after 10 000 cycles. Furthermore, the Ti3C2Tx/CNTs based‐sensor exhibits real‐time detection capability for human facial micro‐expressions and pulse single under physiological conditions. The repeated bending/release tests indicate the long‐time cycle stability of the Ti3C2Tx/CNTs based‐sensor. Owing to the excellent sensing performance, the sensing array was also fabricated. It is believed that this work develops a route for designing a self‐powered sensor system with flexible production, high performance, and human‐friendly characteristics for wearable electronics.

All-Fabric Tactile Sensors Based on Sandwich Structure Design with Tunable Responsiveness

“…It can be seen that the pixel array provides mapped capacitive signals compatible with the shape of the contact object (Figure e). The sensor can detect the corresponding pressure, while the capacitance responses are stable in the corresponding state while applying the pressure. − The AFTS array exhibits stable capacitance responses in correspondence to the applied pressure, with negligible crosstalk between individual AFTSs. This characteristic highlights the excellent sensitivity and applicability of the AFTS array in various wearable sensing devices.…”

Fish Gelatin Reinforced with Carbon Nanotubes and ZnO Nanorods for Wearable Smart Technologies

“…32 They are the perfect choice for components in microelectronics due to their superior electrical conductivity. 33,34 Additionally, the effective heat conductivity of CNTs points to the prospective uses in thermal management and energy conversion systems. 35 Alam et al synthesized gelatin/multiwalled carbon nanotube (MWCNT) nanocomposite and investigated the electrochemical performance, assessing suitability for its use in energy storage devices.…”

“…Their outstanding thermal stability, electrical conductivity, and mechanical strength , have prompted research in a variety of fields, including electronics, aerospace, materials engineering, sensing, and medicine. , CNTs can be used as effective reinforcement in composites to increase strength while maintaining low weight . They are the perfect choice for components in microelectronics due to their superior electrical conductivity. , Additionally, the effective heat conductivity of CNTs points to the prospective uses in thermal management and energy conversion systems . Alam et al synthesized gelatin/multiwalled carbon nanotube (MWCNT) nanocomposite and investigated the electrochemical performance, assessing suitability for its use in energy storage devices .…”