A Chest-Laminated Ultrathin and Stretchable E-Tattoo for the Measurement of Electrocardiogram, Seismocardiogram, and Cardiac Time Intervals

Advanced Science
Taewoo HaNanshu Lu

Abstract

Seismocardiography (SCG) is a measure of chest vibration associated with heartbeats. 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. 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). 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. 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. 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). Using the EMAC tattoo, strong correlations between STI and the systolic/dias...Continue Reading

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Citations

Apr 16, 2020·Sensors·Mariana Jacob RodriguesFrancisco Cercas
Mar 29, 2020·Scientific Reports·José AlbertoMahmoud Tavakoli
Jan 17, 2020·Advanced Materials·Ting WangXiaodong Chen
Aug 5, 2020·Herzschrittmachertherapie & Elektrophysiologie·Aenne S von FalkenhausenMoritz F Sinner
Jan 29, 2021·Advanced Healthcare Materials·Hyung Joon ShimDae-Hyeong Kim
Feb 17, 2021·ACS Applied Materials & Interfaces·Xue-Feng ZhaoHong-Liang Lu
Nov 24, 2020·AI & Society·Tyler L Jaynes
Apr 29, 2021·ACS Applied Materials & Interfaces·Hangfei LiXue Feng
May 8, 2021·Advanced Healthcare Materials·Shuwen ChenChwee Teck Lim
May 25, 2021·Advanced Science·Yangfan ChaiXiangjiang Liu
Aug 19, 2020·ACS Nano·Yuyao LuKuniharu Takei
Nov 25, 2021·Science Advances·Won Jun SongJeong-Yun Sun

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Software Mentioned

EMAC
Silhouette Studio
LabView
SOMNO
StrainMaster
Ecoflex
SOMNOtouch
ABAQUS
FEM
SOMNOtough

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