Tunable piezoresistivity of nanographene films for strain sensing

Jing Zhao; Guole Wang; Rong Yang; Xiaobo Lu; Meng Cheng; Congli He; Guibai Xie; Jianling Meng; Dongxia Shi; Guangyu Zhang

doi:10.1021/nn506341u

Tunable piezoresistivity of nanographene films for strain sensing

Jing Zhao, Guole Wang, Rong Yang, Xiaobo Lu, Meng Cheng, Congli He, Guibai Xie, Jianling Meng, Dongxia Shi, Guangyu Zhang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

253 Citations (Scopus)

Abstract

Graphene-based strain sensors have attracted much attention recently. Usually, there is a trade-off between the sensitivity and resistance of such devices, while larger resistance devices have higher energy consumption. In this paper, we report a tuning of both sensitivity and resistance of graphene strain sensing devices by tailoring graphene nanostructures. For a typical piezoresistive nanographene film with a sheet resistance of ∼100 KΩ/â-¡, a gauge factor of more than 600 can be achieved, which is 50× larger than those in previous studies. These films with high sensitivity and low resistivity were also transferred on flexible substrates for device integration for force mapping. Each device shows a high gauge factor of more than 500, a long lifetime of more than 10⁴ cycles, and a fast response time of less than 4 ms, suggesting a great potential in electronic skin applications.

Original language	English
Pages (from-to)	1622-1629
Number of pages	8
Journal	ACS Nano
Volume	9
Issue number	2
DOIs	https://doi.org/10.1021/nn506341u
Publication status	Published - 24 Feb 2015
Externally published	Yes

Keywords

artificial electronic skin
controllable size
graphene
tunneling effect
ultrasensitivity

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/nn506341u

Cite this

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title = "Tunable piezoresistivity of nanographene films for strain sensing",

abstract = "Graphene-based strain sensors have attracted much attention recently. Usually, there is a trade-off between the sensitivity and resistance of such devices, while larger resistance devices have higher energy consumption. In this paper, we report a tuning of both sensitivity and resistance of graphene strain sensing devices by tailoring graphene nanostructures. For a typical piezoresistive nanographene film with a sheet resistance of ∼100 KΩ/{\^a}-¡, a gauge factor of more than 600 can be achieved, which is 50× larger than those in previous studies. These films with high sensitivity and low resistivity were also transferred on flexible substrates for device integration for force mapping. Each device shows a high gauge factor of more than 500, a long lifetime of more than 104 cycles, and a fast response time of less than 4 ms, suggesting a great potential in electronic skin applications.",

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author = "Jing Zhao and Guole Wang and Rong Yang and Xiaobo Lu and Meng Cheng and Congli He and Guibai Xie and Jianling Meng and Dongxia Shi and Guangyu Zhang",

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T1 - Tunable piezoresistivity of nanographene films for strain sensing

AU - Zhao, Jing

AU - Wang, Guole

AU - Yang, Rong

AU - Lu, Xiaobo

AU - Cheng, Meng

AU - He, Congli

AU - Xie, Guibai

AU - Meng, Jianling

AU - Shi, Dongxia

AU - Zhang, Guangyu

PY - 2015/2/24

Y1 - 2015/2/24

N2 - Graphene-based strain sensors have attracted much attention recently. Usually, there is a trade-off between the sensitivity and resistance of such devices, while larger resistance devices have higher energy consumption. In this paper, we report a tuning of both sensitivity and resistance of graphene strain sensing devices by tailoring graphene nanostructures. For a typical piezoresistive nanographene film with a sheet resistance of ∼100 KΩ/â-¡, a gauge factor of more than 600 can be achieved, which is 50× larger than those in previous studies. These films with high sensitivity and low resistivity were also transferred on flexible substrates for device integration for force mapping. Each device shows a high gauge factor of more than 500, a long lifetime of more than 104 cycles, and a fast response time of less than 4 ms, suggesting a great potential in electronic skin applications.

AB - Graphene-based strain sensors have attracted much attention recently. Usually, there is a trade-off between the sensitivity and resistance of such devices, while larger resistance devices have higher energy consumption. In this paper, we report a tuning of both sensitivity and resistance of graphene strain sensing devices by tailoring graphene nanostructures. For a typical piezoresistive nanographene film with a sheet resistance of ∼100 KΩ/â-¡, a gauge factor of more than 600 can be achieved, which is 50× larger than those in previous studies. These films with high sensitivity and low resistivity were also transferred on flexible substrates for device integration for force mapping. Each device shows a high gauge factor of more than 500, a long lifetime of more than 104 cycles, and a fast response time of less than 4 ms, suggesting a great potential in electronic skin applications.

KW - artificial electronic skin

KW - controllable size

KW - graphene

KW - tunneling effect

KW - ultrasensitivity

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SP - 1622

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JO - ACS Nano

JF - ACS Nano

IS - 2

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Tunable piezoresistivity of nanographene films for strain sensing

Abstract

Keywords

UN SDGs

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