School of Mechanical Engineering and ‡Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST) , 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea.
ACS Appl Mater Interfaces. 2017 Aug 9;9(31):25700-25705. doi: 10.1021/acsami.7b05264. Epub 2017 Jul 25.
Monitoring cardiovascular signals such as heart rate and blood flow provides critically important healthcare information about patients under medical care. However, when the sensors are worn for extended times, the sensors sometimes require higher mechanical compatibility with soft deformable tissues. In this paper, we report an attachable and flexible pulse sensor (bending radius: 2.4 mm), integrated with micro-inorganic photodetectors (thickness: 4.1 μm, photocurrent: 8.99 μA under 1.5 mW/cm) and a red light emitting diode (620 nm), to monitor vital signals for extended times. Operating in a reflection mode, it can be attached and measure heart pulse waveforms from various locations on the human body including the finger, fingertip, nail, and forearm. The small form factor also enables integration on a finger ring. Electrical and mechanical performance assessments demonstrated the practical feasibility of the concept.
监测心血管信号，如心率和血流，为接受医疗护理的患者提供了至关重要的医疗保健信息。然而，当传感器长时间佩戴时，传感器有时需要与柔软的可变形组织具有更高的机械兼容性。在本文中，我们报告了一种可附着和灵活的脉搏传感器（弯曲半径：2.4 毫米），它集成了微无机光电探测器（厚度：4.1 微米，在 1.5 mW/cm 下的光电流：8.99 μA）和一个红色发光二极管（620nm），用于长时间监测重要信号。在反射模式下工作时，它可以附着在人体的各种位置（包括手指、指尖、指甲和前臂）上测量心脏脉搏波形。其小尺寸还使其能够集成在手指环上。电气和机械性能评估证明了该概念的实际可行性。
