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Miniaturized Battery‐Free Wireless Systems for Wearable Pulse Oximetry
Author(s) -
Kim Jeonghyun,
Gutruf Philipp,
Chiarelli Antonio M.,
Heo Seung Yun,
Cho Kyoungyeon,
Xie Zhaoqian,
Banks Anthony,
Han Seungyoung,
Jang KyungIn,
Lee Jung Woo,
Lee KyuTae,
Feng Xue,
Huang Yonggang,
Fabiani Monica,
Gratton Gabriele,
Paik Ungyu,
Rogers John A.
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201604373
Subject(s) - wireless , wearable computer , pulse oximetry , battery (electricity) , computer science , wearable technology , materials science , interface (matter) , electronics , biomedical engineering , embedded system , telecommunications , electrical engineering , engineering , medicine , power (physics) , physics , bubble , quantum mechanics , anesthesia , maximum bubble pressure method , parallel computing
Development of unconventional technologies for wireless collection and analysis of quantitative, clinically relevant information on physiological status is of growing interest. Soft, biocompatible systems are widely regarded as important because they facilitate mounting on external (e.g., skin) and internal (e.g., heart and brain) surfaces of the body. Ultraminiaturized, lightweight, and battery‐free devices have the potential to establish complementary options in biointegration, where chronic interfaces (i.e., months) are possible on hard surfaces such as the fingernails and the teeth, with negligible risk for irritation or discomfort. Here, the authors report materials and device concepts for flexible platforms that incorporate advanced optoelectronic functionality for applications in wireless capture and transmission of photoplethysmograms, including quantitative information on blood oxygenation, heart rate, and heart rate variability. Specifically, reflectance pulse oximetry in conjunction with near‐field communication capabilities enables operation in thin, miniaturized flexible devices. Studies of the material aspects associated with the body interface, together with investigations of the radio frequency characteristics, the optoelectronic data acquisition approaches, and the analysis methods capture all of the relevant engineering considerations. Demonstrations of operation on various locations of the body and quantitative comparisons to clinical gold standards establish the versatility and the measurement accuracy of these systems, respectively.