A Snowflake-Patterned CNT/LIG@SEBS-Based Flexible Electrocardiogram Patch Sensor For Early Diagnosis Of Arrhythmia
Arrhythmias is a disease caused by irregular heartbeats, which can lead to serious complications such as stroke, so it is important to diagnose it early. In this study, we aim to develop a wearable electrocardiogram (ECG) patch sensor that can diagnose arrhythmias by monitoring the ECG in real-time. Laser induced graphene (LIG) electrode features a snowflake pattern to increase surface area and minimize noise from motion artifacts. Additionally, the carbon nanotube (CNT) make electrodes through drop-casting improve electrical conductivity and reduce skin contact impedance, as a result it has 0.2 mV R-peak value and 5.5x10 Ω at 100Hz. The signal-to-noise ratio (SNR) value of the fabricated sensor is 49 dB, which is a higher SNR value compared to commercial electrodes such as Ag/AgCl electrodes, enabling more precise ECG waveform monitoring. This ECG patch sensor is highly promising for smart wearable devices to monitor and diagnose personal health conditions in real-time.
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