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Abstract Wearable textile electronics are highly desirable for realizing personalized health management through non-invasive monitoring of the individual’s physiological condition. However, most reported textile electronics can either periodically target a single physiological signal or miss the explicit details of the signals, leading to a partial assessment of the health condition. Furthermore, electronic textiles with excellent sensing property as well as comfortable wearability remain a challenge. Here, we report a triboelectric all-textile sensor-array (TATSA), with high pressure sensitivity and comfort, for monitoring epidermal pressure related to physiological conditions. It exhibits high pressure sensitivity (7.84 mVPa-1), fast response time (20 ms), stability (> 100,000 cycles), wide working frequency bandwidth (up to 20 Hz), and machine washability (> 40 washes). The fabricated TATSAs ...
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To make UM a better place to learn and to study, we have been inviting world-renowned scholars and prominent leaders from different fields to speak at the University Lecture Series (ULS). We are honored to have Academician Binxing FANG be our keynote speaker of the forthcoming ULS. Academician Fang is an expert in the field of cyberspace security. He is a member of the Chinese Academy of Engineering, the president of the Chinese Information Processing Society of China, and the chair of the Committee of Cyberspace and Information Security Technology of the China Association for Standardization. In this lecture, Academician Fang will speak on the topic “Cyberspace Security in Relation to New Technology”. He will discuss security issues related to artificial intelligence, ... |
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Abstract A novel lead-free flexible piezoelectric energy harvester structure based on porous BCZT pillars and PDMS was achieved. Compared with 0–3 type piezoelectric composites, where the piezoelectric phase is isolated within the material, flexible piezoelectric energy harvesters based on a three-dimensional interconnected ceramic skeleton are of particular interest due to their high stress transfer capability and high piezoelectric coefficients. Herein, a novel lead-free flexible piezoelectric energy harvester structure based on porous BCZT pillars and PDMS was developed. The effect of porosity on piezoelectric coefficients, ferroelectric properties and energy harvesting performance is investigated in detail. The aligned BCZT-PDMS composite shows great potential in piezoelectric energy harvesting due to excellent piezoelectric properties and stress transfer capability compared with 0–3 type composites. The ... |
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