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Wearable Temperature Sensor with High Resolution for Skin Temperature Monitoring
Fan Li1, Hua Xue1, Xiuzhu Lin1
1State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P.R. China.
Abstract:
Flexible temperature sensors with high resolution and good reliability under deformation are a major research focus for wearable electronic devices for skin temperature monitoring. In this study, a fiber-like temperature sensor is fabricated by in situ growing poly(3,4-ethylenedioxythiophene) (PEDOT) on the surface of thermoplastic polyurethane (TPU) fiber. The temperature sensor achieves a high sensitivity of 0.95%·°C-1 with a high linearity between 20 and 40 °C. Most importantly, the sensor achieves a high temperature resolution of 0.2 °C. Due to its structure, the temperature-sensitive fiber is easily embedded into textiles. By sewing the fiber into normal textiles in an S-shape, the interference of strain can be nearly avoided, even when the textile is stretched to 140%. Also, the obtained sensors can monitor skin temperature during exercise, which demonstrates the potential of the sensor's application in healthcare and disease diagnosis.
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01:13Equipments Used to Measure Body Temperature
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01:14Assessing Body Temperature - Axilla
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01:19Assessing Body Temperature - Temporal Artery
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01:27Assessing Body Temperature - Rectal
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01:14Assessing Body Temperature - Tympanic membrane
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