Development and study of low-cost VACNT/PDMS stretchable and resistive strain sensor

被引：9

作者：

Braga, Thyago Santos ^{[1
,3
]}

Vieira, Nirton C. S. ^{[2
]}

Antonelli, Eduardo ^{[2
]}

Rosa, Filipe Menezes ^{[3
]}

Donadon, Mauricio Vicente ^{[1
]}

Corat, Evaldo Jose ^{[3
]}

机构：

[1] Aeronaut Inst Technol, Dept Aeronaut, Sao Jose Dos Campos, Brazil

[2] Univ Fed Sao Paulo, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP, Brazil

[3] Natl Inst Space Res, BR-12227010 Sao Jose Dos Campos, Brazil

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2020年 / 315卷

基金：

巴西圣保罗研究基金会;

关键词：

Carbon nanotube; Low cost; Sensor; Nanocomposite; Electrical properties; PDMS; CARBON NANOTUBES; COMPOSITES; BEHAVIOR; CONDUCTIVITY;

D O I：

10.1016/j.sna.2020.112358

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study introduces fast manufactured (4-5 hours) vertical aligned carbon nanotubes/polydimethylsiloxane (VACNT/PDMS) stretchable sensor for aircraft structures and polymer composites. The VACNT growth method from thermal CVD with camphor and ferrocene precursors create a dense and homogeneous CNT structure with many ohmic conducting paths that surpass any more resistive tunneling phenomena. The extensive AC/DC piezoresistive performance investigation shows ohmic conduction. The VACNTs/PDMS sensor presented high linearity (r(2) = 0.99) under similar to 20 % strain with an average gauge factor of 3.28 at DC measurements and minor resistance variations (0.052 %) attributed to the copper terminals electrodeposition. An important feature is the resistance value compatible with conventional extensometry equipment. The DC gauge factor was similar to 60 % higher than the conventional metallic strain gauge allowing measurements within a wider strain range. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：9

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