Thermally reduced graphene oxide-nylon membrane based epidermal sensor using vacuum filtration for wearable electrophysiological signals and human motion monitoring
Thermally reduced graphene oxide-nylon membrane based epidermal sensor using vacuum filtration for wearable electrophysiological signals and human motion monitoring
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DOI：
10.1016/j.carbon.2019.11.001
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发表时间：
2020-03-01
期刊：
影响因子：
10.9
通讯作者：
Park, Jae Yeong
中科院分区：
文献类型：
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作者：
Das, Partha Sarati;Park, Sang Hyun;Park, Jae Yeong
我们在生物相容性尼龙膜上制造高性能纸基表皮传感器，不使用任何有害化学物质和复杂的工艺。所提出的表皮传感器是使用热还原氧化石墨烯和尼龙膜（TRGO/NM）制造的。表皮传感器 (TRGO/NM) 的开发是为了减少 Ag/AgCl（粘性传感器）的使用。该传感器具有高灵敏度（方块电阻 = 40 Omega/sq.），因为低频时皮肤接触阻抗与 20K Omega 相似。我们发现 TRGO/NM 传感器在 NM 表面形成微间隙，在拉伸和压缩应变下产生电阻变化。 TRGO/NM 传感器具有快速响应时间（类似于 0.5 秒）、弛豫时间（类似于 0.5 秒）以及高度稳定性和出色的弯曲拉伸响应。我们应用表皮传感器来获取心电图（ECG）、脑电图（EEG）和肌电图（EMG）以及监测人体运动。通过细胞毒性测试证实了TRGO/NM传感器的生物相容性。 (C) 2019 Elsevier Ltd. 保留所有权利。
We fabricated high-performance paper-based epidermal sensors on biocompatible nylon-membrane without utilizing any harmful chemicals & complicated processes. The proposed epidermal sensor was fabricated using thermally reduced graphene oxide and a nylon-membrane (TRGO/NM). The epidermal sensor (TRGO/NM) has been developed to reduce the usage of Ag/AgCl (sticky sensor). The sensor demonstrates high sensitivity (sheet resistance = 40 Omega/sq.), because skin-contact impedance was similar to 20K Omega at low frequency. We found that the TRGO/NM sensor developed micro-gaps on the surface of NM, which generated resistance changes under tensile and compressive strain. The TRGO/NM sensor shows fast response time (similar to 0.5 s), relaxation time (similar to 0.5 s), and a highly stable with an excellent bending-stretching response. We applied the epidermal sensor for obtaining electrocardiography (ECG), electroencephalography (EEG), and electromyography (EMG) as well as monitoring human motions also. The biocompatibility of the TRGO/NM sensor was confirmed by performing the cytotoxicity test. (C) 2019 Elsevier Ltd. All rights reserved.