Piezoelectric Dynamics of Arterial Pulse for Wearable Continuous Blood Pressure Monitoring

Yi, Zhiran; Liu, Zhaoxu; Li, Wenbo; Ruan, Tao; Chen, Xiang; Liu, Jingquan; Yang, Bin; Zhang, Wenming

doi:10.1002/adma.202110291

Cited by 117 publications

(78 citation statements)

References 44 publications

(88 reference statements)

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“…The recorded real-time signal has three distinct and gradually weakening characteristic peaks, including percussion, tidal, and diastolic waves of ∼12.1, 3.17, and 1.38 mV amplitude (72 beats per minute). 39,40 Furthermore, the working stability of the flexible DMPS was verified by a dynamic loading test with 10 N pressure at 2 Hz frequency for 5000 cycles, which is sufficient to meet the need for safe and dexterous gripping integrated in an intelligent manipulator (Figure 3d). 41 No significant fluctuations of output voltage are observed under cyclic pressure, revealing that the fabricated sensor has good mechanical durability.…”

Section: Resultsmentioning

confidence: 95%

Flexible Dual-Mechanism Pressure Sensor Based on Ag Nanowire Electrodes for Nondestructive Grading and Quality Monitoring of Fruits

Xia

Wang

Kong

et al. 2022

ACS Appl. Nano Mater.

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To extend the application range of flexible pressure sensors and to be widely used as an economical and convenient way, researchers have made efforts toward high sensitivity, wide detection range, and low power consumption. However, most sensors can only work based on a single mechanism, thus limiting the sensing range and applicability. In view of this, we developed a dual-mechanism pressure sensor (DMPS) based on Ag nanowire/PDMS electrodes and ZnO nanoparticle-based force-sensitive membranes, which has a sandwich structure and complete flexibility under the effect of chemical bonding. It can simultaneously sense high-frequency dynamic pressure as well as static load by integrating piezoelectric and piezocapacitive effects, thereby complementing the inability of conventional piezoelectric-type sensors to continuously detect static pressure. The prepared flexible DMPS containing 20 wt % ZnO nanofiller has a pressure frequency-independent electrical output of about 2 V under 20 N force conditions and also has a long-term stability of more than 5000 pressure cycles. Moreover, it exhibits good linearity, repeatability, and stability in the 0–100 kPa detection range in the piezocapacitive mode. On the basis of multimechanism and modularity, the flexible DMPS was demonstrated for fruit quality monitoring, including avocado ripeness grading, tactile sensory gloves, and moisture loss assessment, indicating its promising applications in intelligent agricultural machines and wearable sensing systems.

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Section: Resultsmentioning

confidence: 95%

Flexible Dual-Mechanism Pressure Sensor Based on Ag Nanowire Electrodes for Nondestructive Grading and Quality Monitoring of Fruits

Xia

Wang

Kong

et al. 2022

ACS Appl. Nano Mater.

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“…The finding of a correlation between piezoelectric pulses and their respective blood pressure waves is always a challenging issue for accurate measurement of blood pressure. Yi et al [ 142 ] have also explained the dynamic nature of arterial pulse and a continuous blood pressure measurement system addressing the issue that explored the feasibility of obtaining continuous blood pressure monitoring in wearable electronics with fewer motion artifacts. Muscle-fiber-inspired piezoelectric textile sensors with tunable mechanical properties have been developed by Su et al [ 143 ] for physiological signals monitoring to fulfill the demand for highly stretchable, biocompatible, and robust features for next-generation biosensors in wearable electronics.…”

Section: Sensing Strategiesmentioning

confidence: 99%

Recent Advances in Stretchable and Wearable Capacitive Electrophysiological Sensors for Long-Term Health Monitoring

et al. 2022

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Over the past several years, wearable electrophysiological sensors with stretchability have received significant research attention because of their capability to continuously monitor electrophysiological signals from the human body with minimal body motion artifacts, long-term tracking, and comfort for real-time health monitoring. Among the four different sensors, i.e., piezoresistive, piezoelectric, iontronic, and capacitive, capacitive sensors are the most advantageous owing to their reusability, high durability, device sterilization ability, and minimum leakage currents between the electrode and the body to reduce the health risk arising from any short circuit. This review focuses on the development of wearable, flexible capacitive sensors for monitoring electrophysiological conditions, including the electrode materials and configuration, the sensing mechanisms, and the fabrication strategies. In addition, several design strategies of flexible/stretchable electrodes, body-to-electrode signal transduction, and measurements have been critically evaluated. We have also highlighted the gaps and opportunities needed for enhancing the suitability and practical applicability of wearable capacitive sensors. Finally, the potential applications, research challenges, and future research directions on stretchable and wearable capacitive sensors are outlined in this review.

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“…The system supports one-click sharing of health data and data-driven cardiovascular diagnostics. Yi et al developed a wireless wearable continuous blood pressure monitoring system [ 46 ]. Through kinetic theory, simulation, and experimental analysis, three kinds of correlations between piezoelectric response and blood pressure were revealed: integration, transition correction, and direct correlation.…”

Section: Biomechanical Monitoring In the Cardiovascular Systemmentioning

confidence: 99%

“…Reprinted/adapted with permission from Ref. [ 46 ]. ( B ) Diagram illustrating a self-powered textile-based triboelectric sensor.…”

Section: Figurementioning

confidence: 99%

Mechanical Sensors for Cardiovascular Monitoring: From Battery-Powered to Self-Powered

Tang

Liu

2022

Biosensors

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Cardiovascular disease is one of the leading causes of death worldwide. Long-term and real-time monitoring of cardiovascular indicators is required to detect abnormalities and conduct early intervention in time. To this end, the development of flexible wearable/implantable sensors for real-time monitoring of various vital signs has aroused extensive interest among researchers. Among the different kinds of sensors, mechanical sensors can reflect the direct information of pressure fluctuations in the cardiovascular system with the advantages of high sensitivity and suitable flexibility. Herein, we first introduce the recent advances of four kinds of mechanical sensors for cardiovascular system monitoring, based on capacitive, piezoresistive, piezoelectric, and triboelectric principles. Then, the physio-mechanical mechanisms in the cardiovascular system and their monitoring are described, including pulse wave, blood pressure, heart rhythm, endocardial pressure, etc. Finally, we emphasize the importance of real-time physiological monitoring in the treatment of cardiovascular disease and discuss its challenges in clinical translation.

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Piezoelectric Dynamics of Arterial Pulse for Wearable Continuous Blood Pressure Monitoring

Cited by 117 publications

References 44 publications

Flexible Dual-Mechanism Pressure Sensor Based on Ag Nanowire Electrodes for Nondestructive Grading and Quality Monitoring of Fruits

Flexible Dual-Mechanism Pressure Sensor Based on Ag Nanowire Electrodes for Nondestructive Grading and Quality Monitoring of Fruits

Recent Advances in Stretchable and Wearable Capacitive Electrophysiological Sensors for Long-Term Health Monitoring

Mechanical Sensors for Cardiovascular Monitoring: From Battery-Powered to Self-Powered

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