期刊
ADVANCED ELECTRONIC MATERIALS
卷 9, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/aelm.202200534
关键词
nanomaterial percolation networks; Seebeck coefficient; strain-insensitivity; wearable healthcare sensors
Wearable healthcare sensors with real-time monitoring capabilities are gaining popularity. The challenge lies in maintaining reliable data while ensuring comfortable wear with good stretchability. This study discusses strain-insensitive design strategies compatible with large deformations and explores the potential of using the Seebeck effect for strain-insensitive sensors.
Large healthcare markets have been created in highly developed economies to improve the quality of life. Wearable healthcare sensors are attracting considerable interest because of their 24 h real-time monitoring capability, which make them useful in the detection of potential diseases. To guide the diagnosis, these sensors are designed to monitor various physical (e.g., pressure, temperature, strain, touch, bioelectricity, etc...) or chemical (e.g., glucose, oxygen, bacteria, viruses, proteins, etc...) quantities. In order to be comfortable to wear for a longer period of time, the sensors must be made with good stretchability to conformably deform with human organs. However, high stretchability always brings the problem that the measurement is very often polluted by the deformation of the substrate, making the data unreliable. According to each the sensor mechanism, multiple strain-insensitive design strategies compatible with large deformations of the human body are discussed and the performance of these strategies are comprehensively analyzed. Then, how the intrinsic strain insensitivity of the Seebeck coefficient of nanomaterial percolation networks can define an alternative promising strategy is demostrated. Finally, the outlooks for future research and challenges in realizing strain-insensitive sensors by applying the Seebeck effect are reported.
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