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Self-Powered and Green Ionic-Type Thermoelectric Paper Chips for Early Fire Alarming
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posted on 2020-07-29, 10:14 authored by Xun Wu, Naiwei Gao, Xiaoting Zheng, Xinglei Tao, Yonglin He, Zhiping Liu, Yapei WangEarly
fire alarming is of vital importance to lower the damages led by forest
fires. Thus far, methods to monitor the forest fires at their early
stage are mainly focused on artificial ground patrol, unmanned aerial
vehicle cruise monitoring, observation by watchtower, or satellite
inspection, whereas these methods are practically encountered with
the problems of untimely feedback before the forest fires are out
of control. This work proposes a particular kind of self-powered,
low-cost, and green thermoelectric paper chips based on the principle
of self-assembly and disassembly of ionic liquids on the surface of
gold electrodes. By adjustment of the species of ionic liquids, both
“n-
and p-type” thermoelectric behaviors have been exploited that
correspond to the opposite open-circuit voltages. Owing to the fluidic
nature of ionic liquids, those “n- and p-type” thermoelectric
units can be readily connected in series on one paper chip, leading
to remarkable voltage signals in the presence of the temperature difference
of 35 K. Followed by signal acquisition and transmission, such a thermoelectric
paper chip successfully affords immediate electrical alarming at the
early stage of an afire circumstance.