Thermally and electrically conductive multifunctional sensor based on epoxy/graphene composite

sensen han, Aron Chand, Sherif Araby, Rui Cai, Shuo Chen, Rongqiang Cheng, Hailan Kang, Qingshi Meng

Research output: Contribution to journalArticle

Abstract

Flexible electronics is expected to be one of the most active research areas in the next decade. In this study, a mechanically robust, flexible and durable epoxy/GnP composite film was fabricated having percolation threshold of electrical conductivity at 1.08 vol% GnPs with high thermal conductivity as 1.47 W m-1 K-1 at 10 vol% GnPs. The composite film shows high mechanical performance: Young’s modulus and tensile strength were improved by 1344% and 66.7%, respectively at 10 vol%. The film has demonstrated high sensitivity to various mechanical loads: (i) it gives good electrical response at high bend and torsion angles up to 180o; and (ii) it displays a good compressive load response up to 2N where the absolute value of electrical resistance change increased by 71%. Furthermore, the film has showed an excellent reliability up to 5.5×103 cycles with maintaining zero-point error. Above 20 ºC, the film solely acts as a temperature sensor; upon cyclic temperature testing, the film demonstrated a stable resistive response in the range of 30 −75 ºC. This flexible composite film has remarkable properties that enable it to be used as a full-fledged sensor for universal applications in aerospace, automotive and civil engineering.
Original languageEnglish
Pages (from-to)(In-press)
JournalNanotechnology
Volume(In-press)
Early online date22 Oct 2019
DOIs
Publication statusE-pub ahead of print - 22 Oct 2019

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Graphite
Graphene
Composite films
Sensors
Composite materials
Automotive engineering
Flexible electronics
Aerospace engineering
Acoustic impedance
Temperature sensors
Civil engineering
Torsional stress
Thermal conductivity
Tensile strength
Elastic moduli
Testing
Temperature

Keywords

  • Graphene;
  • Epoxy

Cite this

Thermally and electrically conductive multifunctional sensor based on epoxy/graphene composite. / han, sensen; Chand, Aron; Araby, Sherif; Cai, Rui; Chen, Shuo ; Cheng, Rongqiang ; Kang, Hailan; Meng, Qingshi.

In: Nanotechnology, Vol. (In-press), 22.10.2019, p. (In-press).

Research output: Contribution to journalArticle

han, S, Chand, A, Araby, S, Cai, R, Chen, S, Cheng, R, Kang, H & Meng, Q 2019, 'Thermally and electrically conductive multifunctional sensor based on epoxy/graphene composite' Nanotechnology, vol. (In-press), pp. (In-press). https://doi.org/10.1088/1361-6528/ab5042
han, sensen ; Chand, Aron ; Araby, Sherif ; Cai, Rui ; Chen, Shuo ; Cheng, Rongqiang ; Kang, Hailan ; Meng, Qingshi. / Thermally and electrically conductive multifunctional sensor based on epoxy/graphene composite. In: Nanotechnology. 2019 ; Vol. (In-press). pp. (In-press).
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