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Search Results (3)

Search Parameters:
Keywords = wrinkled nonplanar surfaces

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20 pages, 4539 KB  
Article
Development of Soft Wrinkled Micropatterns on the Surface of 3D-Printed Hydrogel-Based Scaffolds via High-Resolution Digital Light Processing
by Mauricio A. Sarabia-Vallejos, Scarleth Romero De la Fuente, Nicolás A. Cohn-Inostroza, Claudio A. Terraza, Juan Rodríguez-Hernández and Carmen M. González-Henríquez
Gels 2024, 10(12), 761; https://doi.org/10.3390/gels10120761 - 23 Nov 2024
Viewed by 1087
Abstract
The preparation of sophisticated hierarchically structured and cytocompatible hydrogel scaffolds is presented. For this purpose, a photosensitive resin was developed, printability was evaluated, and the optimal conditions for 3D printing were investigated. The design and fabrication by additive manufacturing of tailor-made porous scaffolds [...] Read more.
The preparation of sophisticated hierarchically structured and cytocompatible hydrogel scaffolds is presented. For this purpose, a photosensitive resin was developed, printability was evaluated, and the optimal conditions for 3D printing were investigated. The design and fabrication by additive manufacturing of tailor-made porous scaffolds were combined with the formation of surface wrinkled micropatterns. This enabled the combination of micrometer-sized channels (100–200 microns) with microstructured wrinkled surfaces (1–3 μm wavelength). The internal pore structure was found to play a critical role in the mechanical properties. More precisely, the TPMS structure with a zero local curvature appears to be an excellent candidate for maintaining its mechanical resistance to compression stress, thus retaining its structural integrity upon large uniaxial deformations up to 70%. Finally, the washing conditions selected enabled us to produce noncytotoxic materials, as evidenced by experiments using AlamarBlue to follow the metabolic activity of the cells. Full article
(This article belongs to the Special Issue Advanced Soft Gels with Enhanced Functionality for Biomedical and Additive Manufacturing Applications)
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59 pages, 22832 KB  
Review
Smart Polymer Surfaces with Complex Wrinkled Patterns: Reversible, Non-Planar, Gradient, and Hierarchical Structures
by Mauricio A. Sarabia-Vallejos, Felipe E. Cerda-Iglesias, Dan A. Pérez-Monje, Nicolas F. Acuña-Ruiz, Claudio A. Terraza-Inostroza, Juan Rodríguez-Hernández and Carmen M. González-Henríquez
Polymers 2023, 15(3), 612; https://doi.org/10.3390/polym15030612 - 25 Jan 2023
Cited by 18 | Viewed by 7759
Abstract
This review summarizes the relevant developments in preparing wrinkled structures with variable characteristics. These include the formation of smart interfaces with reversible wrinkle formation, the construction of wrinkles in non-planar supports, or, more interestingly, the development of complex hierarchically structured wrinkled patterns. Smart [...] Read more.
This review summarizes the relevant developments in preparing wrinkled structures with variable characteristics. These include the formation of smart interfaces with reversible wrinkle formation, the construction of wrinkles in non-planar supports, or, more interestingly, the development of complex hierarchically structured wrinkled patterns. Smart wrinkled surfaces obtained using light-responsive, pH-responsive, temperature-responsive, and electromagnetic-responsive polymers are thoroughly described. These systems control the formation of wrinkles in particular surface positions and the reversible construction of planar-wrinkled surfaces. This know-how of non-planar substrates has been recently extended to other structures, thus forming wrinkled patterns on solid, hollow spheres, cylinders, and cylindrical tubes. Finally, this bibliographic analysis also presents some illustrative examples of the potential of wrinkle formation to create more complex patterns, including gradient structures and hierarchically multiscale-ordered wrinkles. The orientation and the wrinkle characteristics (amplitude and period) can also be modulated according to the requested application. Full article
(This article belongs to the Special Issue Advanced Stimuli-Responsive Polymer Composites)
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32 pages, 12906 KB  
Review
Flexible Sensory Systems: Structural Approaches
by Chan Park, Byeongjun Lee, Jungmin Kim, Haran Lee, Jeongbeom Kang, Jongwon Yoon, Jonghyeon Ban, Chiwon Song and Seong J. Cho
Polymers 2022, 14(6), 1232; https://doi.org/10.3390/polym14061232 - 18 Mar 2022
Cited by 8 | Viewed by 5008
Abstract
Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of [...] Read more.
Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of technologies and methods that can replace elasticity through a structural approach; these approaches can modify mechanical properties, thereby improving performance, while maintaining the existing material integrity. Furthermore, an overview of the recent progress in wave/wrinkle, stretchable interconnect, origami/kirigami, crack, nano/micro, and textile structures is provided. Finally, potential applications and expected developments in soft electronics are discussed. Full article
(This article belongs to the Special Issue Polymer-Based Sensor)
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