Graphene/MXene/Cellulose cellulosic paper-based flexible bifunctional sensors utilizing molecular bridge strategy with tunable piezoresistive effect for Temperature-Pressure sensing

被引：1

作者：

Zhang, Tianxu ^{[1
]}

Zhao, Yunong ^{[1
]}

Long, Qiang ^{[2
]}

Zhu, Xiaowen ^{[1
]}

He, Langyu ^{[1
]}

Li, Zhuoyang ^{[1
]}

Qian, Xingyu ^{[1
]}

He, Xin ^{[1
]}

Li, Jiahao ^{[1
]}

Lv, Cancan ^{[1
]}

Zha, Yuxing ^{[1
]}

Chen, Yiting ^{[1
]}

Hong, Weiqiang ^{[3
,4
]}

Hong, Qi ^{[1
]}

Guo, Xiaohui ^{[1
]}

机构：

[1] Anhui Univ, Sch Integrated Circuits, Key Lab Intelligent Comp & Signal Proc, Minist Educ, Hefei 230601, Peoples R China

[2] Huadong Photoelectron IC Inst, Bengbu 233030, Anhui, Peoples R China

[3] Dalian Univ Technol, State Key Lab High Performance Precis Mfg, Dalian 116024, Peoples R China

[4] Dalian Univ Technol, Key Lab Micro Nano Technol & Syst Liaoning Prov, Dalian 116024, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 497卷

基金：

中国国家自然科学基金;

关键词：

Tunable piezoresistive effects; Molecular bridge effect; Bifunctional sensors; Binary hybrid conductive fillers;

D O I：

10.1016/j.cej.2024.154972

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Wearable technology is changing the way we interact with the digital world. Wearable systems can enable a smarter lifestyle when connected to other smart devices. This work reports a bifunctional sensor prepared from cellulosic paper as substrate for response to both temperature and pressure. The introduction of CMC-Na improves the dispersion of the binary hybrid conductive fillers in the deionized water. Meanwhile, relying on the intermolecular forces of both hydrogen bonding and cation-It interaction, the interfacial interactions of the binary hybrid conductive fillers are strengthened, which is anticipated to create a stable and homogenous conductive layer. And the concept of "effective conductive fillers distribution density" is introduced to explain and analyze the pressure sensing mechanism. The reported sensor has a pressure sensitivity of -1.6189 %/kPa, a sensing range of 370 kPa, and a response recovery time of 37.5 ms/37.5 ms. In addition to its response to mechanical force, the sensor has a detecting range of 23-58 degrees C, a response recovery time of 325 ms/1000 ms, and a temperature coefficient of resistance (TCR) of -1.77 %/degrees C. The potential applications of this sensor demonstrate the excellent gesture tracking characteristics, multi-point tactile sensing capability, and dual stimulus-response of the sensor.

引用

页数：14