A Facile Strain Visualization Method for Stretchable Serpentine Interconnects
Evaluating the stretchability of stretchable interconnects is crucial for ensuring stable operation in practical applications of stretchable electronics. Conventional methods often involve destructive testing and lack comprehensive strain distribution data. Digital image correlation (DIC) can provid...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-08-01
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| Series: | Small Structures |
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| Online Access: | https://doi.org/10.1002/sstr.202500134 |
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| author | Hak Jun Yang Sang Hyun Han Jun Hyuk Shin Su Seok Choi |
| author_facet | Hak Jun Yang Sang Hyun Han Jun Hyuk Shin Su Seok Choi |
| author_sort | Hak Jun Yang |
| collection | DOAJ |
| description | Evaluating the stretchability of stretchable interconnects is crucial for ensuring stable operation in practical applications of stretchable electronics. Conventional methods often involve destructive testing and lack comprehensive strain distribution data. Digital image correlation (DIC) can provide clear strain visualization, but its application to serpentine electrodes, which generally deform in the out‐of‐plane direction, remains challenging. With the growing interest of the in‐plane stretching serpentine electrodes, this study proposes the possibility to resolve the problems in conventional approaches using DIC and thick serpentine electrodes. Herein, a facile method for DIC analysis is presented by utilizing a simple speckle patterning method and optical microscopy. Using this method, the strain distribution in various electrode designs bonded to a soft substrate under extension can be experimentally visualized. Furthermore, the accumulation of plastic strain at various positions on the electrode is investigated. The proposed analysis method offers a new way for evaluating stretchability of serpentine electrodes, which has profound implications for the development and future applications of stretchable electronics. |
| format | Article |
| id | doaj-art-f06dbaf261cc413c853e3c94af284694 |
| institution | Kabale University |
| issn | 2688-4062 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj-art-f06dbaf261cc413c853e3c94af2846942025-08-20T03:40:54ZengWiley-VCHSmall Structures2688-40622025-08-0168n/an/a10.1002/sstr.202500134A Facile Strain Visualization Method for Stretchable Serpentine InterconnectsHak Jun Yang0Sang Hyun Han1Jun Hyuk Shin2Su Seok Choi3Department of Electrical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam‐Ro, Nam‐Gu Pohang Gyeongbuk 37673 KoreaDepartment of Electrical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam‐Ro, Nam‐Gu Pohang Gyeongbuk 37673 KoreaDepartment of Electrical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam‐Ro, Nam‐Gu Pohang Gyeongbuk 37673 KoreaDepartment of Electrical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam‐Ro, Nam‐Gu Pohang Gyeongbuk 37673 KoreaEvaluating the stretchability of stretchable interconnects is crucial for ensuring stable operation in practical applications of stretchable electronics. Conventional methods often involve destructive testing and lack comprehensive strain distribution data. Digital image correlation (DIC) can provide clear strain visualization, but its application to serpentine electrodes, which generally deform in the out‐of‐plane direction, remains challenging. With the growing interest of the in‐plane stretching serpentine electrodes, this study proposes the possibility to resolve the problems in conventional approaches using DIC and thick serpentine electrodes. Herein, a facile method for DIC analysis is presented by utilizing a simple speckle patterning method and optical microscopy. Using this method, the strain distribution in various electrode designs bonded to a soft substrate under extension can be experimentally visualized. Furthermore, the accumulation of plastic strain at various positions on the electrode is investigated. The proposed analysis method offers a new way for evaluating stretchability of serpentine electrodes, which has profound implications for the development and future applications of stretchable electronics.https://doi.org/10.1002/sstr.202500134digital image correlationserpentine electrodesstretchable electronics |
| spellingShingle | Hak Jun Yang Sang Hyun Han Jun Hyuk Shin Su Seok Choi A Facile Strain Visualization Method for Stretchable Serpentine Interconnects Small Structures digital image correlation serpentine electrodes stretchable electronics |
| title | A Facile Strain Visualization Method for Stretchable Serpentine Interconnects |
| title_full | A Facile Strain Visualization Method for Stretchable Serpentine Interconnects |
| title_fullStr | A Facile Strain Visualization Method for Stretchable Serpentine Interconnects |
| title_full_unstemmed | A Facile Strain Visualization Method for Stretchable Serpentine Interconnects |
| title_short | A Facile Strain Visualization Method for Stretchable Serpentine Interconnects |
| title_sort | facile strain visualization method for stretchable serpentine interconnects |
| topic | digital image correlation serpentine electrodes stretchable electronics |
| url | https://doi.org/10.1002/sstr.202500134 |
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