Multi-Level High Entropy-Dissipative Structure Enables Efficient Self-Decoupling of Triple Signals
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.