Highly sensitive and flexible strain sensors based on patterned ITO nanoparticle channels

Do Hoon Lee; Jonghyurk Park; Jong Kwon Lee; Kwang Heo; Dong Jin Lee; Ye Rim Lee; Byung Yang Lee

doi:10.1088/1361-6528/aa9237

Highly sensitive and flexible strain sensors based on patterned ITO nanoparticle channels

Do Hoon Lee, Jonghyurk Park, Jong Kwon Lee, Kwang Heo, Dong Jin Lee, Ye Rim Lee, Byung Yang Lee

School of Mechanical Engineering

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

4 Citations (Scopus)

Abstract

We demonstrate a highly sensitive and flexible bending strain sensor using tin-doped indium oxide (ITO) nanoparticles (NPs) assembled in line patterns on flexible substrates. By utilizing transparent ITO NPs without any surface modifications, we could produce strain sensors with adjustable gauge factors and optical transparency. We were able to control the dimensional and electrical properties of the sensors, such as channel height and resistance, by controlling the NP assembly speed. Furthermore, we were able to generate controlled gauge factor with values ranging from 18 to 157, which are higher than previous cases using metallic Cr NPs and Au NPs. The alignment of the ITO NPs in parallel lines resulted in low crosstalk between the transverse and longitudinal bending directions. Finally, our sensor showed high optical transmittance, up to ∼93% at 500 nm wavelength, which is desirable for flexible electronic applications.

Original language	English
Article number	495501
Journal	Nanotechnology
Volume	28
Issue number	49
DOIs	https://doi.org/10.1088/1361-6528/aa9237
Publication status	Published - 2017 Nov 15

Keywords

ITO
gauge factor
nanoparticle
strain sensor
tin-doped indium oxide

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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title = "Highly sensitive and flexible strain sensors based on patterned ITO nanoparticle channels",

abstract = "We demonstrate a highly sensitive and flexible bending strain sensor using tin-doped indium oxide (ITO) nanoparticles (NPs) assembled in line patterns on flexible substrates. By utilizing transparent ITO NPs without any surface modifications, we could produce strain sensors with adjustable gauge factors and optical transparency. We were able to control the dimensional and electrical properties of the sensors, such as channel height and resistance, by controlling the NP assembly speed. Furthermore, we were able to generate controlled gauge factor with values ranging from 18 to 157, which are higher than previous cases using metallic Cr NPs and Au NPs. The alignment of the ITO NPs in parallel lines resulted in low crosstalk between the transverse and longitudinal bending directions. Finally, our sensor showed high optical transmittance, up to ∼93% at 500 nm wavelength, which is desirable for flexible electronic applications.",

keywords = "ITO, gauge factor, nanoparticle, strain sensor, tin-doped indium oxide",

author = "Lee, {Do Hoon} and Jonghyurk Park and Lee, {Jong Kwon} and Kwang Heo and Lee, {Dong Jin} and Lee, {Ye Rim} and Lee, {Byung Yang}",

note = "Funding Information: This project was supported by the Nano-Material Technology Development Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (2016M3A7B4909581), and the Center for Integrated Smart Sensors, funded by the Ministry of Science, ICT & Future Planning as Global Frontier Project (CISS-2011-0031866). JHP acknowledges the support of the Ministry of Trade, Industry and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT) through the International Cooperative R&D program (No. N0001819).",

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AU - Lee, Do Hoon

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AU - Lee, Jong Kwon

AU - Heo, Kwang

AU - Lee, Dong Jin

AU - Lee, Ye Rim

AU - Lee, Byung Yang

N1 - Funding Information: This project was supported by the Nano-Material Technology Development Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (2016M3A7B4909581), and the Center for Integrated Smart Sensors, funded by the Ministry of Science, ICT & Future Planning as Global Frontier Project (CISS-2011-0031866). JHP acknowledges the support of the Ministry of Trade, Industry and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT) through the International Cooperative R&D program (No. N0001819).

PY - 2017/11/15

Y1 - 2017/11/15

N2 - We demonstrate a highly sensitive and flexible bending strain sensor using tin-doped indium oxide (ITO) nanoparticles (NPs) assembled in line patterns on flexible substrates. By utilizing transparent ITO NPs without any surface modifications, we could produce strain sensors with adjustable gauge factors and optical transparency. We were able to control the dimensional and electrical properties of the sensors, such as channel height and resistance, by controlling the NP assembly speed. Furthermore, we were able to generate controlled gauge factor with values ranging from 18 to 157, which are higher than previous cases using metallic Cr NPs and Au NPs. The alignment of the ITO NPs in parallel lines resulted in low crosstalk between the transverse and longitudinal bending directions. Finally, our sensor showed high optical transmittance, up to ∼93% at 500 nm wavelength, which is desirable for flexible electronic applications.

AB - We demonstrate a highly sensitive and flexible bending strain sensor using tin-doped indium oxide (ITO) nanoparticles (NPs) assembled in line patterns on flexible substrates. By utilizing transparent ITO NPs without any surface modifications, we could produce strain sensors with adjustable gauge factors and optical transparency. We were able to control the dimensional and electrical properties of the sensors, such as channel height and resistance, by controlling the NP assembly speed. Furthermore, we were able to generate controlled gauge factor with values ranging from 18 to 157, which are higher than previous cases using metallic Cr NPs and Au NPs. The alignment of the ITO NPs in parallel lines resulted in low crosstalk between the transverse and longitudinal bending directions. Finally, our sensor showed high optical transmittance, up to ∼93% at 500 nm wavelength, which is desirable for flexible electronic applications.

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KW - gauge factor

KW - nanoparticle

KW - strain sensor

KW - tin-doped indium oxide

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Highly sensitive and flexible strain sensors based on patterned ITO nanoparticle channels

Abstract

Keywords

ASJC Scopus subject areas

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