Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure
In soft lithography roof collapse is frequently observed on the stamp surface consisting of rectangular micro-grooves which yields unwanted contact between the sagged surface and the substrate. Deep understanding of the adhesive contact behavior is a key to design of high-performance collapse-resist...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-01-01
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| Series: | International Journal of Smart and Nano Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475411.2025.2450728 |
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| _version_ | 1841525899050090496 |
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| author | Fan Jin Jiayao Hu Fan Xia Zhigeng Fan |
| author_facet | Fan Jin Jiayao Hu Fan Xia Zhigeng Fan |
| author_sort | Fan Jin |
| collection | DOAJ |
| description | In soft lithography roof collapse is frequently observed on the stamp surface consisting of rectangular micro-grooves which yields unwanted contact between the sagged surface and the substrate. Deep understanding of the adhesive contact behavior is a key to design of high-performance collapse-resistant stamp. Both theoretical and numerical studies are presented for a single rectangular micro-groove in the middle of the stamp surface under applied pressure. The JKR-type adhesion solution is established by the principle of superposition and equivalent energy release rate, with a series of closed-form expressions derived which are consistent with previous studies. Finite element analysis (FEA) is performed based on virtual crack closure technique (VCCT) to investigate the roof collapse mechanism with interfacial adhesion and applied pressure considered. Comparison of theoretical, numerical, and experimental results demonstrates that both size effect and constitutive nonlinearity of the stamp on the self-collapse contact width are not obvious for shallow grooves but become prominent for deep grooves, so that the obtained analytical solution is limited to shallow grooves due to its assumptions of half-plane and linear elasticity adopted for the stamp. For deep grooves, the present FEA method shows potential to capture more accurate results. |
| format | Article |
| id | doaj-art-f92159ead42a4cba9459751690c8e548 |
| institution | Kabale University |
| issn | 1947-5411 1947-542X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Smart and Nano Materials |
| spelling | doaj-art-f92159ead42a4cba9459751690c8e5482025-01-17T06:22:07ZengTaylor & Francis GroupInternational Journal of Smart and Nano Materials1947-54111947-542X2025-01-0111810.1080/19475411.2025.2450728Adhesion-induced roof collapse of a rectangular micro-groove under applied pressureFan Jin0Jiayao Hu1Fan Xia2Zhigeng Fan3Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, PR ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, PR ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, PR ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, PR ChinaIn soft lithography roof collapse is frequently observed on the stamp surface consisting of rectangular micro-grooves which yields unwanted contact between the sagged surface and the substrate. Deep understanding of the adhesive contact behavior is a key to design of high-performance collapse-resistant stamp. Both theoretical and numerical studies are presented for a single rectangular micro-groove in the middle of the stamp surface under applied pressure. The JKR-type adhesion solution is established by the principle of superposition and equivalent energy release rate, with a series of closed-form expressions derived which are consistent with previous studies. Finite element analysis (FEA) is performed based on virtual crack closure technique (VCCT) to investigate the roof collapse mechanism with interfacial adhesion and applied pressure considered. Comparison of theoretical, numerical, and experimental results demonstrates that both size effect and constitutive nonlinearity of the stamp on the self-collapse contact width are not obvious for shallow grooves but become prominent for deep grooves, so that the obtained analytical solution is limited to shallow grooves due to its assumptions of half-plane and linear elasticity adopted for the stamp. For deep grooves, the present FEA method shows potential to capture more accurate results.https://www.tandfonline.com/doi/10.1080/19475411.2025.2450728Adhesive contactJKRgroovestamp collapsesize effect |
| spellingShingle | Fan Jin Jiayao Hu Fan Xia Zhigeng Fan Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure International Journal of Smart and Nano Materials Adhesive contact JKR groove stamp collapse size effect |
| title | Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure |
| title_full | Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure |
| title_fullStr | Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure |
| title_full_unstemmed | Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure |
| title_short | Adhesion-induced roof collapse of a rectangular micro-groove under applied pressure |
| title_sort | adhesion induced roof collapse of a rectangular micro groove under applied pressure |
| topic | Adhesive contact JKR groove stamp collapse size effect |
| url | https://www.tandfonline.com/doi/10.1080/19475411.2025.2450728 |
| work_keys_str_mv | AT fanjin adhesioninducedroofcollapseofarectangularmicrogrooveunderappliedpressure AT jiayaohu adhesioninducedroofcollapseofarectangularmicrogrooveunderappliedpressure AT fanxia adhesioninducedroofcollapseofarectangularmicrogrooveunderappliedpressure AT zhigengfan adhesioninducedroofcollapseofarectangularmicrogrooveunderappliedpressure |