![alone we are strong together we are stronger tattoo alone we are strong together we are stronger tattoo](https://i.pinimg.com/originals/6e/4f/3d/6e4f3d3a5835e67d7f3d5d9384873969.jpg)
3 While ECG reflects myocardial conduction, myocardial contraction is characterized by mechano-acoustic signals. Wearable devices such as Holter monitors have been developed to track ECG continuously. 2 Among all the cardiovascular signals, the best known is electrocardiogram (ECG), which indicates the electrical activity of the heart. 1 As a result, wearable devices are being developed to perform continuous cardiovascular monitoring for telemedicine and outpatients. Using the EMAC tattoo, strong correlations between STI and the systolic/diastolic blood pressures, are found, which may provide a simple way to estimate blood pressure continuously and noninvasively using one chest-mounted e-tattoo.Ĭardiovascular diseases (CVD) are the leading cause of death in the United States and cost the nation hundreds of billions of dollars each year. Integrating the soft SCG sensor with a pair of soft gold electrodes on a single e-tattoo platform forms a soft electro-mechano-acoustic cardiovascular (EMAC) sensing tattoo, which can perform synchronous ECG and SCG measurements and extract various cardiac time intervals including systolic time interval (STI).
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As piezoelectric sensors easily suffer from motion artifacts, motion artifacts are effectively reduced by performing subtraction between a pair of identical SCG tattoos placed adjacent to each other. 3D digital image correlation (DIC) is used to map chest vibration to identify the best location to mount the e-tattoo and to investigate the effects of substrate stiffness. This work reports an ultrathin and stretchable SCG sensing e-tattoo based on the filamentary serpentine mesh of 28-µm-thick piezoelectric polymer, polyvinylidene fluoride (PVDF).
#Alone we are strong together we are stronger tattoo skin
While skin soft electronic tattoos (e-tattoos) have been widely reported for electrocardiogram (ECG) sensing, wearable SCG sensors are still based on either rigid accelerometers or non-stretchable piezoelectric membranes. Seismocardiography (SCG) is a measure of chest vibration associated with heartbeats.