Stretchable PPG sensor with light polarization for physical activity-permissible monitoring

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Skin-attachable sensors, which represent the ultimate form of wearable electronic devices that ensure conformal contact with skin, suffer from motion artifact limitations owing to relative changes in position between the sensor and skin during physical activities. In this study, a polarization-selective structure of a skin-conformable photoplethysmographic (PPG) sensor was developed to decrease the amount of scattered light from the epidermis, which is the main cause of motion artifacts. The motion artifacts were suppressed more than 10-fold in comparison with those of rigid sensors. The developed sensor-with two orthogonal polarizers-facilitated successful PPG signal monitoring during wrist angle movements corresponding to high levels of physical activity, enabling continuous monitoring of daily activities, even while exercising for personal health care.
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Issue Date
2022-04
Language
English
Article Type
Article
Citation

SCIENCE ADVANCES, v.8, no.15

ISSN
2375-2548
DOI
10.1126/sciadv.abm3622
URI
http://hdl.handle.net/10203/318497
Appears in Collection
BC-Journal Papers(저널논문)
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