writer：Shenghong Li, Binkai Wu, Shaobing Wang, Mengting Jiang, Chundi Pan, Yanjuan Dong, Weiqiang Xu, Hou-yong Yu
keywords：complex signal field, high entropy-dissipative conductive layer, multiple levels, smart sensor, triple self-decoupling effect
source：期刊
specific source：Advanced Materials
Issue time：2024年

The theory of high entropy-dissipative structure is confined to high-entropy

alloys and their oxide materials under harsh conditions, but it is very difficult

to obtain high entropy-dissipative structure for smart sensors based on

polymers and metal oxides under mild conditions. Moreover, multiple signal

coupling effect heavily hinder the sensor applications, and current multimodal

integrated devices can solve two signal-decoupling, but need very

complicated process way. In this work, new synthesis concept is the first time

to fabricate high entropy-dissipative conductive layer of smart sensors with

triple-signal response and self-decoupling ability within poly-pyrrole/zinc

oxide (PPy/ZnO) system. The sensor (SPZ20) amplifies pressure (17.54%/kPa)

and gas (0.37%/ppm), reduces humidity (0.41%/% RH) and temperature

(0.12%/°C) signals, simultaneously achieving the triple self-decoupling effect

of pressure and gas in the complex temperature-humidity field because of the

enlarged pressure-contact area, enhanced gas-responsive sites, altered vapor

path and its own heat insulation function. Additionally, it inherits the strong

robustness (500 rubbing, washing, and heating or freezing cycles) and

endurance (10 000 photo-purification cycles) of traditional high-entropy

materials for information transmission and smart alarms in emergencies or

harsh environments. This work gives a new insight into the multiple-signal

response and smart flexible electronic design from natural fibers.