Performance-enhanced and cost-effective triboelectric nanogenerator based on stretchable electrode for wearable SpO2 monitoring

Flexible photoplethysmographic sensing devices for intelligent medical treatment

“…As a high-performance flexible wearable device, it needs to have the following characteristics; good character adaptability, scalability, biological compatibility, high stability, and low-power consumption. 78–83,90–100 For real-time monitoring of the blood oxygen saturation signal of the human body in complex exercise states and the physiological environment, the device must have good environmental adaptability to ensure that the monitored electrical signal can accurately represent the human health status in real time for early diagnosis and intervention of cardiovascular diseases. To achieve the required performance of the flexible devices, extensive work has been conducted on (among others) the design of the interconnection of devices into a graphic structure that can withstand external tensile strain to realize the ductility of devices and use two-dimensional materials with performance advantages to improve the sensing performance of devices.…”

Human body IoT systems based on the triboelectrification effect: energy harvesting, sensing, interfacing and communication

“…By combining the advantages of carbon materials with high conductivity and organic electrodes with high stretchability, Chen et al fabricated a stretchable electrode with a rough surface. 203 As the carbon concentration increased, it exhibited high output performance with the maximum voltage performance further increased under a large strain (100%), which is suitable for wearable systems.…”

Flexible Wide-Range Triboelectric Sensor for Physiological Signal Monitoring and Human Motion Recognition

“…TENGs can not only provide power for other devices but also be used as self-powered sensors to sense external stimuli. , Many flexible materials can also be used as friction materials, which gives TENGs great potential for health monitoring. The typical physiological signals such as oxyhemoglobin saturation, pulse waves, , and breathing wave , were accurately measured by the TENGs-based pressure sensors.…”