Non-oxidized graphene/elastomer composite films for wearable strain and pressure sensors with ultra-high flexibility and sensitivity

Qingshi Meng, Zhiwen Liu, Rui Cai, Shaowei Lu, Tianqing Liu

Research output: Contribution to journalArticle

Abstract

It remains challenging to prepare wearable strain and pressure sensors with excellent mechanical properties, ultra-high flexibility and sensitivity. Electrically conductive graphene platelets (GnPs) with high structural integrity are used in making a composite film fabricated using robust fabrication techniques. The gauge factor for the strain is up to 100 at 0-5% strain and 50 at 5%-30% strain, and the sensitivity to pressure is 2.7×10-2 kPa-1 between 0-10 kPa and 1.5×10-4 kPa-1 between 300-1000 kPa. In addition, the flexible sensor demonstrates good repeatability and durability after 1000 cycles of tensile and compression tests. The flexible sensor has fast response ability and a wide operating temperature range, suggesting the excellent response to temperature. The flexible sensor is applied in monitoring several human motions as a wearable device with high accuracy. The ability to detect strain, pressure and temperature of the flexible sensor extends its applications to multifunctional wearable devices.
Original languageEnglish
Pages (from-to)(In-press)
JournalPolymers for Advanced Technologies
Volume(In-press)
Early online date12 Nov 2019
DOIs
Publication statusE-pub ahead of print - 12 Nov 2019

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Pressure sensors
Composite films
Elastomers
Graphene
Sensors
Structural integrity
Platelets
Temperature
Gages
Durability
Fabrication
Mechanical properties
Monitoring

Keywords

  • Graphene
  • Composite films
  • Flexible conductor

Cite this

Non-oxidized graphene/elastomer composite films for wearable strain and pressure sensors with ultra-high flexibility and sensitivity. / Meng, Qingshi; Liu, Zhiwen; Cai, Rui; Lu, Shaowei ; Liu, Tianqing .

In: Polymers for Advanced Technologies, Vol. (In-press), 12.11.2019, p. (In-press).

Research output: Contribution to journalArticle

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