Takaya Maika, Matsuda Ryosuke, Inamori Go, Kamoto Umihiro, Isoda Yutaka, Tachibana Daiki, Nakamura Fumika, Fuchiwaki Ohmi, Okubo Yusuke, Ota Hiroki
Department of Mechanical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan.
Graduate School of System Integration, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan.
ACS Sens. 2021 Jan 22;6(1):212-219. doi: 10.1021/acssensors.0c02135. Epub 2021 Jan 4.
In this study, a highly transformable electrocardiograph that can considerably deform the position of stretchable electrodes based on the lead method for diagnosing heart disease was developed; these electrodes exhibited high resistance stability against considerable stretching and multiple stretching. To realize the large deformable functionality of the electrodes of a system, liquid metal electrodes and a heteroconnector composed of a liquid metal paste and carbon-based conductive rubber were employed. The developed device can achieve a 200% strain with only 6% resistance change and a high stability of resistances after the 100-time stretching test. In addition, the study demonstrated electrocardiograms in different lead methods of adult and child using the same device. The proposed combination of large deformable electrodes with high electric stability and a robust heteroconnector is an important technology, and it presents a considerable advancement in the application of stretchable electronic systems.
在本研究中，开发了一种高度可变形的心电图仪，它可以根据诊断心脏病的导联方法显著改变可拉伸电极的位置；这些电极在经历大幅拉伸和多次拉伸时表现出高电阻稳定性。为了实现系统电极的大变形功能，采用了液态金属电极以及由液态金属糊和碳基导电橡胶组成的异质连接器。所开发的装置在仅6%的电阻变化情况下就能实现200%的应变，并且在100次拉伸测试后电阻具有高稳定性。此外，该研究还展示了使用同一装置在成人和儿童不同导联方法下的心电图。所提出的具有高电稳定性的大变形电极与坚固的异质连接器的组合是一项重要技术，并且在可拉伸电子系统的应用方面取得了显著进展。
