Journal
ADVANCED MATERIALS TECHNOLOGIES
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/admt.202300898
Keywords
composites; electrospinning fabrics; spraying method; temperature sensors; vanadium dioxide
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Long-term effective temperature monitoring is crucial for health monitoring, disease diagnosis, and other applications. A flexible temperature sensor with stability and high sensitivity has been developed using VO2/PEDOT:PSS composites sprayed onto an SBS electrospinning substrate. This sensor exhibits high thermal sensitivity, precision, and ultra-fast response time, enabling accurate real-time temperature detection and long-term monitoring.
Long-term effective temperature monitoring using a flexible wearable temperature sensor is critical for future health monitoring, noninvasive clinical biomonitoring, disease diagnosis, and so on. Thermistors have the merits of simple structure, ease of preparation and great sensitivity, but the preparation of thermistors with good flexibility is often at the expense of their sensitivity and requirement of high temperature. Here, a flexible temperature sensor with stability and high sensitivity by spraying VO2/PEDOT:PSS composites on an SBS electrospinning substrate is reported. The sensor exhibits high thermal sensitivity (-2.712%/?), high precision (85 mK), ultra-fast response time (1 s) and recovery time (2.5 s), enabling accurate real-time temperature detection and meeting the need for long-term temperature monitoring and tracking. As a proof of concept, this sensor is applied to monitor human skin temperature, breathing rate, and temperature recognition, and as a temperature-based input keyboard, demonstrating its tremendous potential to further develop personalized flexible sensors.
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