Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics
Stretchable electrodes comprising thin gold films with initial nanocracks on elastic substrates of poly(dimethylsiloxane) are developed in this work, which can be stretched reversibly while maintaining conductivity to an applied uniaxial strain as large as 120%. Reliable electromechanical performanc...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/105009 http://hdl.handle.net/10220/48664 |
| _version_ | 1811678744306253824 |
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| author | Zhao, Yang Yu, Mei Liu, Zhiyuan Yu, Zhe |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Zhao, Yang Yu, Mei Liu, Zhiyuan Yu, Zhe |
| author_sort | Zhao, Yang |
| collection | NTU |
| description | Stretchable electrodes comprising thin gold films with initial nanocracks on elastic substrates of poly(dimethylsiloxane) are developed in this work, which can be stretched reversibly while maintaining conductivity to an applied uniaxial strain as large as 120%. Reliable electromechanical performance is essential for the application of stretchable electronics as bioelectronic interfaces under various working conditions; therefore, the electrical and thermal effects on the electromechanical performance of the stretchable gold film electrodes are investigated in this work. It is found that the stretchability deteriorates to some extent depending on the electrical and thermal treatments. Microstructures and stress analysis in the cracks are studied, along with crack quantification. It is believed that the decrease of the stretchability is ascribed to the combination of the crack widening by thermal mismatch stress and crack tip smoothening by the electromigration phenomenon. Therefore, the current density and temperature through the electrodes should be controlled within a certain range for wide applications in order to maintain a stable performance of the electrodes. This study also provides some guiding significance for the design of other stretchable electronic devices composed of two materials with large different physical properties. |
| first_indexed | 2024-10-01T02:58:08Z |
| format | Journal Article |
| id | ntu-10356/105009 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:58:08Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1050092023-07-14T15:55:59Z Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics Zhao, Yang Yu, Mei Liu, Zhiyuan Yu, Zhe School of Materials Science & Engineering Electromigation DRNTU::Engineering::Materials Electrodes Stretchable electrodes comprising thin gold films with initial nanocracks on elastic substrates of poly(dimethylsiloxane) are developed in this work, which can be stretched reversibly while maintaining conductivity to an applied uniaxial strain as large as 120%. Reliable electromechanical performance is essential for the application of stretchable electronics as bioelectronic interfaces under various working conditions; therefore, the electrical and thermal effects on the electromechanical performance of the stretchable gold film electrodes are investigated in this work. It is found that the stretchability deteriorates to some extent depending on the electrical and thermal treatments. Microstructures and stress analysis in the cracks are studied, along with crack quantification. It is believed that the decrease of the stretchability is ascribed to the combination of the crack widening by thermal mismatch stress and crack tip smoothening by the electromigration phenomenon. Therefore, the current density and temperature through the electrodes should be controlled within a certain range for wide applications in order to maintain a stable performance of the electrodes. This study also provides some guiding significance for the design of other stretchable electronic devices composed of two materials with large different physical properties. Published version 2019-06-12T03:58:34Z 2019-12-06T21:44:27Z 2019-06-12T03:58:34Z 2019-12-06T21:44:27Z 2019 Journal Article Zhao, Y., Yu, M., Liu, Z., & Yu, Z. (2019). Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics. Journal of Applied Physics, 125(16), 165305-. doi:10.1063/1.5079435 0021-8979 https://hdl.handle.net/10356/105009 http://hdl.handle.net/10220/48664 10.1063/1.5079435 en Journal of Applied Physics © 2019 The Author(s). All rights reserved. This paper was published by AIP in Journal of Applied Physics and is made available with permission of The Author(s). 7 p. application/pdf |
| spellingShingle | Electromigation DRNTU::Engineering::Materials Electrodes Zhao, Yang Yu, Mei Liu, Zhiyuan Yu, Zhe Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics |
| title | Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics |
| title_full | Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics |
| title_fullStr | Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics |
| title_full_unstemmed | Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics |
| title_short | Electrical and thermal effects on electromechanical performance of stretchable thin gold films on PDMS substrates for stretchable electronics |
| title_sort | electrical and thermal effects on electromechanical performance of stretchable thin gold films on pdms substrates for stretchable electronics |
| topic | Electromigation DRNTU::Engineering::Materials Electrodes |
| url | https://hdl.handle.net/10356/105009 http://hdl.handle.net/10220/48664 |
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