A self-powered analog sensor-data-logging device based on Fowler-Nordheim dynamical systems.

A self-powered analog sensor-data-logging device based on Fowler-Nordheim dynamical systems.
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DOI:
10.1038/s41467-020-19292-w
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发表时间:
2020-10-28
影响因子:
16.6
通讯作者:
Chakrabartty S
Chakrabartty S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Mehta D;Aono K;Chakrabartty S

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Continuous, battery-free operation of sensor nodes requires ultra-low-power sensing and data-logging techniques. Here we report that by directly coupling a sensor/transducer signal into globally asymptotically stable monotonic dynamical systems based on Fowler-Nordheim quantum tunneling, one can achieve self-powered sensing at an energy budget that is currently unachievable using conventional energy harvesting methods. The proposed device uses a differential architecture to compensate for environmental variations and the device can retain sensed information for durations ranging from hours to days. With a theoretical operating energy budget less than 10 attojoules, we demonstrate that when integrated with a miniature piezoelectric transducer the proposed sensor-data-logger can measure cumulative “action” due to ambient mechanical acceleration without any additional external power. Designing ultra-low-power sensing and data-logging techniques with battery-free operation of sensor nodes remains a challenge. Here, the authors present a self-powered sensor-data-logger device that records a cumulative measure of the sensor signal intensity over its entire duration.
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