ArticleACS applied materials & interfaces2023
Wavelength-Dependent Shaping of Azopolymer Micropillars for Three-Dimensional Structure Control.
Article in ACS applied materials & interfaces, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Photo-guided azopolymer hydrogel actuators.Light, science & applications · 2026Article
- Mechanistic Insight Into the Polymorph-Dependent Photosalient Effect of a White Light or Two-Photon Activated Photoreactive Molecular Salt.Angewandte Chemie (International ed. in English) · 2026Article
- Stress-driven photo-reconfiguration of surface microstructures via vectorial field-guided lithography.Light, science & applications · 2026Article
- Neuromorphic Light-Responsive Organic Matter for in Materia Reservoir Computing.Advanced materials (Deerfield Beach, Fla.) · 2025Article
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Authors and funding
4 authors.
Funding
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Abstract
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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