2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
| Autor: | Choi Jae Won, Prabhakaran Prem, N Edavalath Hritwik, Dupont Maxime, Kim Jongsu, Cheng Xiangming, Ha Cheol Woo, Lee Ji-Sun, Han Jisu, Son Yong, Yeon Si-Mo |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fabrication Mechanical Engineering Delamination Soft-materials Hydrogels 3D printing 4D materials Microstructure Finite element method Two-photon lithography Resist Mechanics of Materials Laser direct writing medicine TA401-492 General Materials Science Composite material Swelling medicine.symptom Lithography Materials of engineering and construction. Mechanics of materials Microfabrication |
| Zdroj: | Materials & Design, Vol 212, Iss, Pp 110226-(2021) |
| ISSN: | 0264-1275 |
| Popis: | Hydrogel precursor photoresists (HPR) are being studied widely due to the close similarities between HPR cured microstructures and biological materials. A vast majority of such resists are formulated in water and suffer from swelling-related inhomogeneities during microfabrication. Hence formulation HPRs in non-aqueous media are being studied as an alternative. This approach enables controlled swelling of fabricated structures. In this work, we demonstrate that controlled swelling of hydrogel microstructures fabricated by two-photon lithography (TPL) can be used to drive 2D to 2.5D transitions in flat microstructures. Through fabrication experiments, mechanical analysis and finite element method (FEM) simulations we have shown that swelling delamination leads to bend microstructures, and the height of the resulting bend structure depends on the designed thickness of the structure. |
| Databáze: | OpenAIRE |
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