Wearable Pressure Sensors for Pulse Wave Monitoring

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(21)

Published: Jan. 19, 2022

Abstract Cardiovascular diseases remain the leading cause of death worldwide. The rapid development flexible sensing technologies and wearable pressure sensors have attracted keen research interest been widely used for long‐term real‐time cardiovascular status monitoring. Owing to compelling characteristics, including light weight, wearing comfort, high sensitivity pulse pressures, physiological waveforms can be precisely continuously monitored by health Herein, an overview human wave monitoring is presented, with a focus on transduction mechanism, microengineering structures, related applications in condition assessment. conceptualizations methods acquisition pathological information system are outlined. biomechanics arterial waves working mechanism various sensors, triboelectric, piezoelectric, magnetoelastic, piezoresistive, capacitive, optical also subject systematic debate. Exemple measurement based structured devices then summarized. Finally, discussion opportunities challenges that face, as well their potential intelligent personalized healthcare given conclusion.

Language: Английский

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Piezoelectric nanogenerators for personalized healthcare

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(9), P. 3380 - 3435

Published: Jan. 1, 2022

Piezoelectric nanogenerators are becoming a compelling bioelectronics platform technology for human-associated energy harvesting, self-powered sensing, and therapeutics, which will largely contribute to the medical field in era of Internet things.

Language: Английский

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High-performance piezoelectric composites via β phase programming

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Aug. 18, 2022

Polymer-ceramic piezoelectric composites, combining high piezoelectricity and mechanical flexibility, have attracted increasing interest in both academia industry. However, their activity is largely limited by intrinsically low crystallinity weak spontaneous polarization. Here, we propose a Ti3C2Tx MXene anchoring method to manipulate the intermolecular interactions within all-trans conformation of polymer matrix. Employing phase-field simulation molecular dynamics calculations, show that OH surface terminations on nanosheets offer hydrogen bonding with fluoropolymer matrix, leading dipole alignment enhanced net polarization polymer-ceramic composites. We then translated this interfacial strategy into electrospinning boost response samarium doped Pb (Mg1/3Nb2/3)O3-PbTiO3/polyvinylidene fluoride composite nanofibers 160% via inclusion. With excellent attributes, as-electrospun can be easily integrated conventional shoe insoles form foot sensor network for all-around gait patterns monitoring, walking habits identification Metatarsalgi prognosis. This work utilizes coupling mechanism as develop high-performance composites wearable electronics.

Language: Английский

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Advanced Fiber Materials for Wearable Electronics

Advanced Fiber Materials, Journal Year: 2022, Volume and Issue: 5(1), P. 12 - 35

Published: Oct. 13, 2022

Abstract Fiber materials are highly desirable for wearable electronics that expected to be flexible and stretchable. Compared with rigid planar electronic devices, fiber-based provide significant advantages in terms of flexibility, stretchability breathability, they considered as the pioneers new generation soft wearables. The convergence textile science, engineering nanotechnology has made it feasible build functions on fibers maintain them during wear. Over last few years, fiber-shaped desired designability integration features have been intensively explored developed. As an indispensable part cornerstone great significance. Herein, research progress advanced fiber is reviewed, which mainly includes various material preparations, fabrication technologies representative studies different applications. Finally, key challenges future directions examined along analysis possible solutions. Graphical abstract

Language: Английский

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Sensing–transducing coupled piezoelectric textiles for self-powered humidity detection and wearable biomonitoring

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(3), P. 842 - 851

Published: Jan. 1, 2023

The performance of chemical sensors is dominated by the perception target molecules via sensitive materials and conduction sensing signals through transducers. However, transduction are spatially temporally independent in most sensors, which poses a challenge for device miniaturization integration. Herein, we proposed sensing-transducing coupled strategy embedding high piezoresponse Sm-PMN-PT ceramic (d33 = ∼1500 pC N-1) into moisture-sensitive polyetherimide (PEI) polymer matrix electrospinning to conjugate humidity signal synchronously sympatrically. Through phase-field simulation experimental characterization, reveal principle design composition topological structure piezoelectric (STP) textiles order modulate recognition, conversion, component utilization ratio prepared active achieving sensitivity (0.9%/RH%) fast response (20 s) toward ambient moisture. STP textile can be worn on human body realize emotion exercise status monitoring, physiological stress identification. This work offers unprecedented insights coupling mechanism between chemisorption-related interfacial state energy conversion efficiency opens up new paradigm developing autonomous, multifunctional highly flexible sensors.

Language: Английский

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Kirigami‐Inspired Pressure Sensors for Wearable Dynamic Cardiovascular Monitoring

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(36)

Published: June 29, 2022

Continuously and accurately monitoring pulse-wave signals is critical to prevent diagnose cardiovascular diseases. However, existing wearable pulse sensors are vulnerable motion artifacts due the lack of proper adhesion conformal interface with human skin during body movement. Here, a highly sensitive pressure sensor inspired by kirigami structure developed measure wave on different artery sites under various prestressing conditions even COMSOL multiphysical field coupling simulation experimental testing used verify unique advantages structure. The device shows superior sensitivity (35.2 mV Pa-1 ) remarkable stability (>84 000 cycles). Toward practical applications, wireless system for wirelessly transmitting mobile phone in real-time, which successfully distinguished waveforms from participants. measured as accurate those provided commercial medical device. Given compelling features, provides an ascendant way electronics overcome when signals, thus representing solid advancement toward personalized healthcare era Internet Things.

Language: Английский

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Hydrophilic porous PVDF membrane embedded with BaTiO3 featuring controlled oxygen vacancies for piezocatalytic water cleaning

Nano Energy, Journal Year: 2022, Volume and Issue: 94, P. 106930 - 106930

Published: Jan. 7, 2022

Language: Английский

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Advances in Wearable Strain Sensors Based on Electrospun Fibers

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 25, 2023

Abstract Wearable strain sensors with the ability of detecting physiological activities play an important role in personalized healthcare. Electrospun fibers have become a popular building block for wearable due to their excellent mechanical properties, breathability, and light weight. In this review, structure preparation process electrospun conductive layer are systematically introduced. The impact materials structures on following discussion sensing performance optimization strategies is outlined. Furthermore, applications fiber‐based biomonitoring, motion detection, human‐machine interaction presented. Finally, challenges promising future directions community based pointed out.

Language: Английский

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Simultaneous Biomechanical and Biochemical Monitoring for Self-Powered Breath Analysis

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(5), P. 7301 - 7310

Published: Jan. 25, 2022

The high moisture level of exhaled gases unavoidably limits the sensitivity breath analysis via wearable bioelectronics. Inspired by pulmonary lobe expansion/contraction observed during respiration, a respiration-driven triboelectric sensor (RTS) was devised for simultaneous respiratory biomechanical monitoring and acetone concentration analysis. A tin oxide-doped polyethyleneimine membrane to play dual role as both layer an sensing material. prepared RTS exhibited excellent ability in measuring flow rate (2-8 L/min) frequency (0.33-0.8 Hz). Furthermore, presented good performance biochemical (2-10 ppm range at levels), which validated finite element This work has led development novel real-time active system strengthened triboelectric-chemisorption coupling mechanism.

Language: Английский

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Maxwell displacement current induced wireless self-powered gas sensor array

Materials Today Physics, Journal Year: 2022, Volume and Issue: 30, P. 100951 - 100951

Published: Dec. 13, 2022

Language: Английский

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