Flexible Weaving Constructed Self‐Powered Pressure Sensor Enabling Continuous Diagnosis of Cardiovascular Disease and Measurement of Cuffless Blood Pressure

Abstract

Pulse wave carries comprehensive information regarding the human cardiovascular system (CS), which is essential for directly capturing CS parameters. More importantly, cuffless blood pressure (BP) is one of the most critical markers in CS. Accurately measuring BP via the pulse wave for continuous and noninvasive diagnosis of a disease associated with hypertension remains a challenge and highly desirable. Here, a flexible weaving constructed self‐powered pressure sensor (WCSPS) is reported for measurement of the pulse wave and BP in a noninvasive manner. The WCSPS holds an ultrasensitivity of 45.7 mV Pa−1 with an ultrafast response time of less than 5 ms, and no performance degradation is observed after up to 40 000 motion cycles. Furthermore, a low power consumption sensor system is developed for precisely monitoring pulse wave from the fingertip, wrist, ear, and ankles. A practical measurement is performed with 100 people with ages spanning from 24 to 82 years and different health statuses. The discrepancy between the measured BP results using the WCSPS and that provided by the commercial cuff‐based device is about 0.87–3.65%. This work demonstrates an efficient and cost‐effective way for human health monitoring, which would be a competitive alternative to current complex cardiovascular monitoring systems.

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

“…Fortunately, the sensing capability of textile‐based NGs can be improved through structural design, systematic circuit management, and custom personalized user interface. As listed in Table 9 , the sensing accuracies of several optimized NGs are similar to or even better than those of commercial devices . Therefore, it is firmly believed that the power output of future NGs will be greatly enhanced and improved. 5) Evaluation Standard : There is an incredible fact behind the vigorous development of NGs that the electrical output performance of different NGs are unable to compare.…”

Quantum Dots for Hybrid Energy Harvesting: From Integration to Piezo‐Phototronics

“…This is because the piezoelectric charges are related to the crystal structure whereas the triboelectric charges are associated with the contact electrification effect. The typical materials for a mechanical energy harvester are ZnO NWs, PbZrTiO, BaTiO, and poly(vinylidene fluoride) (PVDF)‐based polymers for a PENG, and polytetrafluoroethylene (PTFE), polydimethylsiloxane (PDMS), and PVDF‐based polymers for a TENG …”

“…The typical materials for a mechanical energy harvester are ZnO NWs, PbZrTiO, BaTiO, and poly(vinylidene fluoride) (PVDF)-based polymers for a PENG, [55][56][57][58][59] and polytetrafluoroethylene (PTFE), polydimethylsiloxane (PDMS), and PVDF-based polymers for a TENG. [60][61][62][63][64]…”

High‐Performance Flexible Tactile Sensor Enabling Intelligent Haptic Perception for a Soft Prosthetic Hand

“…Recently, benefited from the development of material science and manufacturing, many flexible tactile sensors have been realized based on different transduction mechanisms including capacitance, piezoelectricity, resistance, and triboelectricity . To increase the sensitivity of the sensor, microstructure have been introduced in many researches, such as pyramid, hemispheres, and micropillar .…”