Kinetic control of nanocrack formation in a palladium thin film on an elastomeric substrate for hydrogen gas sensing in air

Sungyeon Kim; Byungjin Jang; Jongbin Park; Young Kook Lee; Hyun Sook Lee; Sungmee Cho; Wooyoung Lee

doi:10.1016/j.snb.2016.02.093

Kinetic control of nanocrack formation in a palladium thin film on an elastomeric substrate for hydrogen gas sensing in air

Sungyeon Kim, Byungjin Jang, Jongbin Park, Young Kook Lee, Hyun Sook Lee, Sungmee Cho, Wooyoung Lee

Department of Materials Science and Engineering

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

7 Citations (Scopus)

Abstract

We report the effects of various tensile velocities on the nanocrack formation in a Pd thin film on an elastomeric polydimethylsiloxane substrate and its H₂ sensing properties. A tunable nanocrack along the x and y axes was created by mechanical stretching/compression cycles with varying tensile velocities. From the microstructural analyses, we found that the tensile velocity has a significant effect on the crack density but little effect on the average crack width. The Pd nanogap sensor prepared under a high tensile velocity showed a high performance with a low detection limit of 500 ppm of H₂ in air. Our results indicate that the higher crack density with the narrow nanocrack width (55-100 nm) propagated over the entire film provides the enhanced H₂ sensing properties in air.

Original language	English
Pages (from-to)	367-373
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	230
DOIs	https://doi.org/10.1016/j.snb.2016.02.093
Publication status	Published - 2016 Jul 1

Bibliographical note

Funding Information:
This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) (2009-0093823).

Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.snb.2016.02.093

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title = "Kinetic control of nanocrack formation in a palladium thin film on an elastomeric substrate for hydrogen gas sensing in air",

abstract = "We report the effects of various tensile velocities on the nanocrack formation in a Pd thin film on an elastomeric polydimethylsiloxane substrate and its H2 sensing properties. A tunable nanocrack along the x and y axes was created by mechanical stretching/compression cycles with varying tensile velocities. From the microstructural analyses, we found that the tensile velocity has a significant effect on the crack density but little effect on the average crack width. The Pd nanogap sensor prepared under a high tensile velocity showed a high performance with a low detection limit of 500 ppm of H2 in air. Our results indicate that the higher crack density with the narrow nanocrack width (55-100 nm) propagated over the entire film provides the enhanced H2 sensing properties in air.",

author = "Sungyeon Kim and Byungjin Jang and Jongbin Park and Lee, {Young Kook} and Lee, {Hyun Sook} and Sungmee Cho and Wooyoung Lee",

note = "Funding Information: This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) (2009-0093823). Publisher Copyright: {\textcopyright} 2016 Elsevier B.V. All rights reserved.",

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doi = "10.1016/j.snb.2016.02.093",

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T1 - Kinetic control of nanocrack formation in a palladium thin film on an elastomeric substrate for hydrogen gas sensing in air

AU - Kim, Sungyeon

AU - Jang, Byungjin

AU - Park, Jongbin

AU - Lee, Young Kook

AU - Lee, Hyun Sook

AU - Cho, Sungmee

AU - Lee, Wooyoung

N1 - Funding Information: This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) (2009-0093823). Publisher Copyright: © 2016 Elsevier B.V. All rights reserved.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - We report the effects of various tensile velocities on the nanocrack formation in a Pd thin film on an elastomeric polydimethylsiloxane substrate and its H2 sensing properties. A tunable nanocrack along the x and y axes was created by mechanical stretching/compression cycles with varying tensile velocities. From the microstructural analyses, we found that the tensile velocity has a significant effect on the crack density but little effect on the average crack width. The Pd nanogap sensor prepared under a high tensile velocity showed a high performance with a low detection limit of 500 ppm of H2 in air. Our results indicate that the higher crack density with the narrow nanocrack width (55-100 nm) propagated over the entire film provides the enhanced H2 sensing properties in air.

AB - We report the effects of various tensile velocities on the nanocrack formation in a Pd thin film on an elastomeric polydimethylsiloxane substrate and its H2 sensing properties. A tunable nanocrack along the x and y axes was created by mechanical stretching/compression cycles with varying tensile velocities. From the microstructural analyses, we found that the tensile velocity has a significant effect on the crack density but little effect on the average crack width. The Pd nanogap sensor prepared under a high tensile velocity showed a high performance with a low detection limit of 500 ppm of H2 in air. Our results indicate that the higher crack density with the narrow nanocrack width (55-100 nm) propagated over the entire film provides the enhanced H2 sensing properties in air.

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JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

SN - 0925-4005

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Kinetic control of nanocrack formation in a palladium thin film on an elastomeric substrate for hydrogen gas sensing in air

Abstract

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