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

Autor(es)

Braga, Thyago Santos ^{[1, 2]} ; Vieira, Nirton C. S. ^[3] ; Antonelli, Eduardo ^[3] ; Rosa, Filipe Menezes ^[1] ; Donadon, Mauricio Vicente ^[2] ; Corat, Evaldo Jose ^[1]

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res, BR-12227010 Sao Jose Dos Campos - Brazil

^[2] Aeronaut Inst Technol, Dept Aeronaut, Sao Jose Dos Campos - Brazil

^[3] Univ Fed Sao Paulo, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SENSORS AND ACTUATORS A-PHYSICAL; v. 315, NOV 1 2020.
• Citações Web of Science: 0

Resumo

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. (AU)

• Processo FAPESP: 12/15857-1 - Estudos científicos e aplicações inovadoras em diamante-CVD, Diamond-Like Carbon (DLC) e carbono nanoestruturado, obtidos por deposição química na fase vapor
• Beneficiário: Vladimir Jesus Trava-Airoldi
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/07508-3 - Explorando as propriedades elétricas e ópticas de derivados de grafeno para detecção de cianotoxinas
• Beneficiário: Nirton Cristi Silva Vieira
• Modalidade de apoio: Auxílio à Pesquisa - Regular