دورية أكاديمية
A Power Compensation Strategy for Achieving Homogeneous Microstructures for 4D Printing Shape-Adaptive PNIPAM Hydrogels: Out-of-Plane Variations
| العنوان: | A Power Compensation Strategy for Achieving Homogeneous Microstructures for 4D Printing Shape-Adaptive PNIPAM Hydrogels: Out-of-Plane Variations |
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| المؤلفون: | Liyuan Tan, Hyunjin Lee, Li Fang, David J. Cappelleri |
| المصدر: | Gels, Vol 8, Iss 12, p 828 (2022) |
| بيانات النشر: | MDPI AG, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Science LCC:Chemistry LCC:Inorganic chemistry LCC:General. Including alchemy |
| مصطلحات موضوعية: | hydrogel, PNIPAM, polymerization, 4D printing, homogeneous, deformation, Science, Chemistry, QD1-999, Inorganic chemistry, QD146-197, General. Including alchemy, QD1-65 |
| الوصف: | In the last decade, 3D printing has attracted significant attention and has resulted in benefits to many research areas. Advances in 3D printing with smart materials at the microscale, such as hydrogels and liquid crystalline polymers, have enabled 4D printing and various applications in microrobots, micro-actuators, and tissue engineering. However, the material absorption of the laser power and the aberrations of the laser light spot will introduce a decay in the polymerization degree along the height direction, and the solution to this problem has not been reported yet. In this paper, a compensation strategy for the laser power is proposed to achieve homogeneous and high aspect ratio hydrogel structures at the microscale along the out-of-plane direction. Linear approximations for the power decay curve are adopted for height steps, discretizing the final high aspect ratio structures. The strategy is achieved experimentally with hydrogel structures fabricated by two-photon polymerization. Moreover, characterizations have been conducted to verify the homogeneity of the printed microstructures. Finally, the saturation of material property is investigated by an indirect 3D deformation method. The proposed strategy is proved to be effective and can be explored for other hydrogel materials showing significant deformation. Furthermore, the strategy for out-of-plane variations provides a critical technique to achieve 4D-printed homogeneous shape-adaptive hydrogels for further applications. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2310-2861 |
| Relation: | https://www.mdpi.com/2310-2861/8/12/828; https://doaj.org/toc/2310-2861 |
| DOI: | 10.3390/gels8120828 |
| URL الوصول: | https://doaj.org/article/3766fbcf18af48da91f91cd1e77c984a |
| رقم الأكسشن: | edsdoj.3766fbcf18af48da91f91cd1e77c984a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23102861 |
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| DOI: | 10.3390/gels8120828 |