Geometry-driven mass transport dynamics within permeable 3D-microstructures fabricated <i>via</i> two-photon polymerization

Mhanna, Rana; Zhou, Ruchun; Jin, Ming; Pan, Haiyan; Wan, Decheng; Versace, Davy‐Louis; Hobeika, Nelly; Khitous, Amine; Soppera, Olivier; Lamielle, Patrick; Malval, Jean‐Pierre

doi:10.1039/d2tc00331g

Cited by 2 publications

(1 citation statement)

References 52 publications

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“…Three-dimensional (3D) surface architectures at the mesoscale enable fundamentally new properties and functionalities for materials that do not generally exist for their planar forms, let alone their bulky counterparts. , The influence of the reduced size and the complex surface geometry on optical, mechanical, thermal, acoustic, and electrical properties, , has led to the application of engineered 3D mesoscopic structures in a wide variety of fields, including in photonic devices, , surface wettability, − dry adhesive technologies, biomedical devices, , actuators and sensors, wearable devices, and energy storage …”

Section: Introductionmentioning

confidence: 99%

Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control

Januariyasa,

Borbone,

Salvatore

et al. 2023

ACS Appl. Mater. Interfaces

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Surfaces endowed with three-dimensional (3D) mesostructures, showing features in the nanometer to micrometer range, are critical for applications in several fields of science and technology. Finding a fabrication method that is simultaneously inexpensive, simple, fast, versatile, highly scalable, and capable of producing complex 3D shapes is still a challenge. Herein, we characterize the photoreconfiguration of a micropillar array of an azobenzene-containing polymer at different light wavelengths and demonstrate the tailoring of the surface geometry and its related functionality only using light. By changing the irradiated light wavelength and its polarization, we demonstrate the fabrication of various complex isotropic and anisotropic 3D mesostructures from a single original pristine geometry. Quantitative morphological analyses revealed an interplay between the decay rate of absorbed light intensity, micropillar volume preservation, and the cohesive forces between the azopolymer chains as the origin of distinctive wavelength-dependent 3D structural remorphing. Finally, we show the potentialities of this method in surface engineering by photoreshaping a single original micropillar surface into two sets of different mesostructured surfaces exhibiting tunable hydrophobicity in a wide water contact angle range. Our study opens up a new paradigm for fabricating functional 3D mesostructures in a simple, low-cost, fast, and scalable manner.

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Section: Introductionmentioning

confidence: 99%

Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control

Januariyasa,

Borbone,

Salvatore

et al. 2023

ACS Appl. Mater. Interfaces

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Effect of substituents on the performance of N-carbazolyl double benzylidene ketones in visible/NIR light one/two-photon polymerization

Xie,

Wang,

Wang

et al. 2024

European Polymer Journal

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Geometry-driven mass transport dynamics within permeable 3D-microstructures fabricated via two-photon polymerization

Abstract: The geometric scalability offered by two-photon stereolithography (2PS) has contributed to its rapid widespread into multiple well-established or emerging applications. Taking benefit of this flexible parameterization, we have developed an...

Cited by 2 publications

References 52 publications

Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control

Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control

Effect of substituents on the performance of N-carbazolyl double benzylidene ketones in visible/NIR light one/two-photon polymerization

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