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
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
收藏
页数:9
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