Monitoring blood pressure and cardiac function without positioning via a deep learning–assisted strain sensor array

Science Advances, Год журнала: 2023, Номер 9(32)

Опубликована: Авг. 11, 2023

Continuous and reliable monitoring of blood pressure cardiac function is great importance for diagnosing preventing cardiovascular diseases. However, existing approaches are bulky costly, limiting their wide applications early diagnosis. Here, we developed an intelligent system based on a conformal flexible strain sensor array deep learning neural networks. The has variety advantages, including high sensitivity, linearity, fast response recovery, isotropy. Experiments simulation synergistically verified that the can acquire high-precise feature-rich pulse waves from wrist without precise positioning. By combining high-quality with well-trained model, monitor parameters. As proof concept, further constructed wearable real-time long-term function, which may contribute to personalized health management, diagnosis, remote treatment.

Язык: Английский

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Advances in Wearable Strain Sensors Based on Electrospun Fibers

Advanced Functional Materials, Год журнала: 2023, Номер 33(18)

Опубликована: Фев. 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.

Язык: Английский

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Smart textiles for self-powered biomonitoring

Med-X, Год журнала: 2023, Номер 1(1)

Опубликована: Июль 11, 2023

Abstract Merging electronics with textiles has become an emerging trend since hold magnificent wearing comfort and user-friendliness compared conventional wearable bioelectronics. Smart can be effectively integrated into our daily to convert on-body biomechanical, biochemical, body heat energy electrical signals for long-term, real-time monitoring of physiological states, showing compelling medical economic benefits. This review summarizes the current progress in self-powered biomonitoring along three pathways: heat, biochemical conversion. Finally, it also presents promising directions challenges field, as well insights future development. aims highlight frontiers smart biomonitoring, which could contribute revolutionizing traditional healthcare a personalized model. Graphical Self-powered via conversion are discussed this work. Platform technologies, including piezoelectric nanogenerators (PENGs), triboelectric (TENGs), magnetoelastic generators (MEGs) biomechanical conversion, thermoelectric (TEGs) boy biofuel cells (BFCs) systematically introduced textile form. Working manner greatly improved comfort, pave road healthcare.

Язык: Английский

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Motion artefact management for soft bioelectronics

Nature Reviews Bioengineering, Год журнала: 2024, Номер 2(7), С. 541 - 558

Опубликована: Апрель 15, 2024

Язык: Английский

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Strong, Tough, and Anti‐Swelling Supramolecular Conductive Hydrogels for Amphibious Motion Sensors

Small, Год журнала: 2023, Номер 19(44)

Опубликована: Июль 2, 2023

Conductive polymer hydrogels (CPHs) are widely employed in emerging flexible electronic devices because they possess both the electrical conductivity of conductors and mechanical properties hydrogels. However, poor compatibility between conductive polymers hydrogel matrix, as well swelling behavior humid environments, greatly compromises CPHs, limiting their applications wearable devices. Herein, a supramolecular strategy to develop strong tough CPH with excellent anti-swelling by incorporating hydrogen, coordination bonds, cation-π interactions rigid conducting soft matrix is reported. Benefiting from effective networks, obtained has homogeneous structural integrity, exhibiting remarkable tensile strength (1.63 MPa), superior elongation at break (453%), toughness (5.5 MJ m-3 ). As strain sensor, possesses high (2.16 S m-1 ), wide linear detection range (0-400%), sensitivity (gauge factor = 4.1), sufficient monitor human activities different windows. Furthermore, this resistance been successfully applied underwater sensors for monitoring frog swimming communication. These results reveal new possibilities amphibious sensors.

Язык: Английский

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Advances in wound dressing based on electrospinning nanofibers

Journal of Applied Polymer Science, Год журнала: 2023, Номер 141(1)

Опубликована: Окт. 3, 2023

Abstract In recent years, there has been a significant focus on bioactive dressings suitable for treating chronic and acute wounds. Electrospinning nanofibers are considered advanced dressing options due to their high porosity permeability air water, effective barrier properties against external pathogens, excellent resemblance the extracellular matrix wound healing skin regeneration. This article reviews advancements in application of electrospinning healing. The review begins with an overview process methods. It then explores advantages disadvantages different synthetic natural polymers used preparation dressings. discussed this include collagen, gelatin, silk fibroin, chitosan, hyaluronic acid, sodium alginate. Additionally, delves into commonly like polyvinyl alcohol, chloride, polyethylene lactone, polylactide, polyurethane applications. Furthermore, examines blending create high‐performance also incorporation functional additives, such as antimicrobial agents, growth factors, extracts, expedite tissue repair. conclusion, is emerging technology that provides unique opportunities designing more care products.

Язык: Английский

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Advanced Dielectric Materials for Triboelectric Nanogenerators: Principles, Methods, and Applications

Advanced Materials, Год журнала: 2024, Номер 36(52)

Опубликована: Март 22, 2024

Abstract Triboelectric nanogenerator (TENG) manifests distinct advantages such as multiple structural selectivity, diverse selection of materials, environmental adaptability, low cost, and remarkable conversion efficiency, which becomes a promising technology for micro‐nano energy harvesting self‐powered sensing. Tribo‐dielectric materials are the fundamental core components high‐performance TENGs. In particular, charge generation, dissipation, storage, migration dielectrics, dynamic equilibrium behaviors determine overall performance. Herein, comprehensive summary is presented to elucidate dielectric transport mechanism tribo‐dielectric material modification principle toward The contact electrification started first, followed by introducing basic Subsequently, mechanisms strategies highlighted regarding physical/chemical, surface/bulk, coupling, structure optimization. Furthermore, representative applications based TENGs power sources, sensors demonstrated. existing challenges potential opportunities advanced outlined, guiding design, fabrication, materials.

Язык: Английский

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Thermoelectric and Photoelectric Dual Modulated Sensors for Human Internet of Things Application in Accurate Fire Recognition and Warning

Advanced Functional Materials, Год журнала: 2023, Номер 33(41)

Опубликована: Июнь 11, 2023

Abstract The emergence of the Internet Things (IoT) era has necessitated development intelligent wearable electronics for fire warning to mitigate hazards prior ignition. Although significant advancements are achieved in thermoelectric materials and devices, design a specific device precision still remains challenging. In this study, an sensing system human IoT that utilizes novel light/heat dual‐parameter‐responsive single‐walled carbon nanotube/poly(3‐hexylthiophene‐2,5‐diyl) (SWCNT/P3HT) composite is developed. This comprises composite, circuit microcontroller, message transmission system, which together create source device. synergistic effect light heat observed enhance output voltage response time under concurrent stimuli, as compared heating alone. found effectively identify alarm sources, owing high photoelectric performance SWCNT/P3HT precise recognition, ability adjust alarming threshold detecting hazards. study presents new approach designing hold potential applications smart home living environments, including child protection against

Язык: Английский

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Flexible electronics for cardiovascular healthcare monitoring

The Innovation, Год журнала: 2023, Номер 4(5), С. 100485 - 100485

Опубликована: Июль 25, 2023

•Flexible electronics can revolutionize cardiovascular healthcare monitoring.•Flexible aid in promptly identifying disease indicators, enabling better personalized treatment.•Further developments include wireless design, miniaturization, multifunction, artificial intelligence-assisted diagnosis, virtual medicine, customized healthcare, etc. Cardiovascular diseases (CVDs) are one of the most urgent threats to humans worldwide, which responsible for almost one-third global mortality. Over last decade, research on flexible monitoring and treatment CVDs has attracted tremendous attention. In contrast conventional medical instruments hospitals that usually bulky, hard move, monofunctional, time-consuming, capable continuous, noninvasive, real-time, portable monitoring. Notable progress been made this emerging field, thus a number significant achievements concomitant prospects deserve attention practical implementation. Here, we comprehensively review latest CVDs, focusing new functions provided by electronics. First, characteristics foundation their combination briefly reviewed. Then, four representative applications elaborated: blood pressure (BP) monitoring, electrocardiogram (ECG) echocardiogram direct epicardium Their operational principles, progress, merits demerits, future efforts discussed. Finally, remaining challenges opportunities outlined.

Язык: Английский

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Wireless Technologies in Flexible and Wearable Sensing: From Materials Design, System Integration to Applications

Advanced Materials, Год журнала: 2024, Номер 36(27)

Опубликована: Апрель 23, 2024

Wireless and wearable sensors attract considerable interest in personalized healthcare by providing a unique approach for remote, noncontact, continuous monitoring of various health-related signals without interference with daily life. Recent advances wireless technologies have promoted practical applications due to their significantly improved characteristics, such as reduction size thickness, enhancement flexibility stretchability, conformability the human body. Currently, most researches focus on active materials structural designs sensors, just few exceptions reflecting data transmission. This review provides comprehensive overview state-of-the-art related studies empowering sensors. The emerging functional nanomaterials utilized designing modules are highlighted, which include metals, carbons, MXenes. Additionally, outlines system-level integration flexible spanning from novel design strategies enhanced efficient transmitting wirelessly. Furthermore, introduces representative remote noninvasive physiological through on-skin implantable sensing systems. Finally, challenges, perspectives, unprecedented opportunities discussed.

Язык: Английский

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