Sensitive Electronic-Skin Strain Sensor Array Based on the Patterned Two-Dimensional α-In 2 Se 3

Wei Feng, Wei Zheng, Feng Gao, Xiaoshuang Chen, Guangbo Liu, Tawfique Hasan, Wenwu Cao, Pingan Hu

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Two-dimensional (2D) layered semiconductors have emerged as a highly attractive class of materials for flexible and wearable strain sensor-centric devices such as electronic-skin (e-skin). This is primarily due to their dimensionality, excellent mechanical flexibility, and unique electronic properties. However, the lack of effective and low-cost methods for wafer-scale fabrication of these materials for strain sensor arrays limits their potential for such applications. Here, we report growth of large-scale 2D In 2 Se 3 nanosheets by templated chemical vapor deposition (CVD) method, using In 2 O 3 and Se powders as precursors. The strain sensors fabricated from the as-grown 2D In 2 Se 3 films show 2 orders of magnitude higher sensitivity (gauge factor ∼237 in -0.39% to 0.39% uniaxial strain range along the device channel length) than what has been demonstrated from conventional metal-based (gauge factor: ∼1-5) and graphene-based strain sensors (gauge factor: ∼2-4) in a similar uniaxial strain range. The integrated strain sensor array, fabricated from the template-grown 2D In 2 Se 3 films, exhibits a high spatial resolution of ∼500 μm in strain distribution. Our results demonstrate the applicability and highly attractive properties of 2D layered semiconductors in e-skins for robotics and human body motion monitoring.

Original languageEnglish (US)
Pages (from-to)4278-4283
Number of pages6
JournalChemistry of Materials
Volume28
Issue number12
DOIs
StatePublished - Jun 28 2016

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Sensor arrays
Skin
Gages
Sensors
Graphite
Nanosheets
Electronic properties
Powders
Graphene
Chemical vapor deposition
Robotics
Metals
Fabrication
Monitoring

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Feng, Wei ; Zheng, Wei ; Gao, Feng ; Chen, Xiaoshuang ; Liu, Guangbo ; Hasan, Tawfique ; Cao, Wenwu ; Hu, Pingan. / Sensitive Electronic-Skin Strain Sensor Array Based on the Patterned Two-Dimensional α-In 2 Se 3 In: Chemistry of Materials. 2016 ; Vol. 28, No. 12. pp. 4278-4283.
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Sensitive Electronic-Skin Strain Sensor Array Based on the Patterned Two-Dimensional α-In 2 Se 3 . / Feng, Wei; Zheng, Wei; Gao, Feng; Chen, Xiaoshuang; Liu, Guangbo; Hasan, Tawfique; Cao, Wenwu; Hu, Pingan.

In: Chemistry of Materials, Vol. 28, No. 12, 28.06.2016, p. 4278-4283.

Research output: Contribution to journalArticle

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