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Updated: Jun 21, 2026
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Laser Micromachining for Polymer Surface Topography Design
Published on: September 19, 2025
Large area fabrication of tuned polystyrene/poly(methylmethacrylate) periodic structures using laser interference
Diego F Acevedo1, Andrés F Lasagni, Marina Cornejo
1Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Rio Cuarto, Córdoba, Argentina. dacevedo@exa.unrc.edu.ar
Langmuir : the ACS Journal of Surfaces and Colloids
|July 10, 2009
Summary
Direct laser interference patterning creates advanced architectures in poly(methylmethacrylate-co-styrene) copolymers. This method enables the fabrication of unique protruding periodic structures on polymer surfaces.
Area of Science:
- Polymer Science and Engineering
- Materials Science
- Laser-based Manufacturing
Background:
- Poly(methylmethacrylate-co-styrene) (PMMA-S) copolymers offer tunable properties based on their composition.
- Advanced surface structuring is crucial for developing novel material functionalities.
Purpose of the Study:
- To investigate the fabrication of advanced architectures in PMMA-S copolymers using direct laser interference patterning.
- To understand the influence of copolymer composition on laser-induced surface modifications.
Main Methods:
- Direct laser interference patterning was employed on PMMA-S copolymers with varying methylmethacrylate (MMA) content (12-66% mol).
- Laser intensities were varied to observe different surface modification regimes: swelling and ablation.
Main Results:
- Two distinct regimes were observed: surface swelling via microbubble formation at low intensities and periodic micropore formation at higher intensities.
- The swelling threshold was independent of MMA content, while the ablation threshold significantly depended on MMA content.
- Convex hemispherical dots were fabricated via swelling, contrasting with concave holes from ablation.
Conclusions:
- Direct laser interference patterning is a versatile method for creating advanced periodic structures on PMMA-S copolymers.
- The differential response to laser intensity, linked to MMA content, allows for controlled surface architecture fabrication.
- This technique offers a unique pathway for producing protruding periodic structures on polymer surfaces.
