Wrist-wearable blood flow meter by biomimetically structured conductive PDMS composite

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-06-17 DOI:10.1016/j.sna.2025.116813

Gyeong J. Jin , M. Mahabubur Rahman , Mookyoung Yoo , M. Jalal Uddin , Bappa Sarkar , Joon S. Shim

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引用次数: 0

Abstract

Real-time diagnosis of cardiovascular disease is essential in its earliest stages due to reducing the uncertainty of death and heart attack. The wearable device have received significant attention for predicting arterial stiffness by detecting real-time heart pulse information. In this work, a two-layered biomimetic-flexible wearable sensor based on conductive polydimethylsiloxane (PDMS) has been developed to diagnose heart pulse signals. When the soft arterial expansion and compression applies pressure over the sensor embodied onto the wrist, the contact between the biomimetic patterns in the two layers of the sensor is ON and OFF, respectively, detecting, detailed heart pulse waves. Since the sensor's sensitivity in measuring pulse signal depends on the conductivity of the flexible biomimetic patterns, the structure of the patterns, including their length, diameter, and density is optimized to maximize the sensor performance. Finally, the proposed sensor is demonstrated to record the real-time heart pulse on the wrist artery and pulse wave velocity as a provision of the point-of- healthcare (PoHC).

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仿生结构导电PDMS复合材料腕戴式血流计

由于减少死亡和心脏病发作的不确定性，在心血管疾病的早期阶段进行实时诊断至关重要。该可穿戴设备通过检测实时心脏脉搏信息来预测动脉僵硬度，受到了广泛关注。在这项工作中，开发了一种基于导电聚二甲基硅氧烷（PDMS）的双层仿生柔性可穿戴传感器，用于诊断心脏脉搏信号。当软动脉扩张和压缩施加压力到腕上的传感器时，传感器两层仿生模式之间的接触分别是ON和OFF，检测详细的心脏脉搏波。由于传感器测量脉冲信号的灵敏度取决于柔性仿生模式的电导率，因此模式的结构，包括它们的长度，直径和密度被优化，以最大限度地提高传感器的性能。最后，该传感器被证明可以记录手腕动脉上的实时心脏脉搏和脉搏波速度，作为医疗点（PoHC）的提供。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...