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 | |
| Publication status | Published - 2016 Jul 1 |
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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
Cite this
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Kinetic control of nanocrack formation in a palladium thin film on an elastomeric substrate for hydrogen gas sensing in air. / Kim, Sungyeon; Jang, Byungjin; Park, Jongbin; Lee, Young-Kook; Lee, Hyun Sook; Cho, Sungmee; Lee, Wooyoung.
In: Sensors and Actuators, B: Chemical, Vol. 230, 01.07.2016, p. 367-373.Research output: Contribution to journal › Article
TY - JOUR
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
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.
UR - http://www.scopus.com/inward/record.url?scp=84959332673&partnerID=8YFLogxK
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U2 - 10.1016/j.snb.2016.02.093
DO - 10.1016/j.snb.2016.02.093
M3 - Article
VL - 230
SP - 367
EP - 373
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
ER -