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Laser Micromachining for Polymer Surface Topography Design

Laser Micromachining for Polymer Surface Topography Design

Published on: September 19, 2025

Biomimetic surface structuring using cylindrical vector femtosecond laser beams.

Evangelos Skoulas^1,2, Alexandra Manousaki¹, Costas Fotakis^1,3

¹Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013, Heraklion, Crete, Greece.

Scientific Reports

|March 23, 2017

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Researchers developed a novel laser technique to create complex, nature-inspired surface structures. This method fabricates ordered nano- and micro-scale patterns on nickel, mimicking shark skin and lotus leaves for advanced applications.

Area of Science:

Materials Science
Laser Physics
Surface Engineering

Background:

Fabricating complex surface structures often requires multi-step processes.
Mimicking natural surface morphologies can yield advanced material properties.
Laser-based surface structuring offers potential for precise pattern generation.

Purpose of the Study:

To develop a single-step, scalable method for creating highly ordered, multi-directional surface structures.
To explore the use of cylindrical vector (CV) femtosecond (fs) laser beams for biomimetic surface fabrication.
To demonstrate the creation of nano-, micro-, and dual-scale structures inspired by natural examples.

Main Methods:

Utilizing cylindrical vector (CV) femtosecond (fs) laser beams with radial and azimuthal polarization.

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Directly writing periodic structures on nickel (Ni) surfaces via line and large area scanning.

Controlling structure formation by adjusting irradiation conditions.

Main Results:

Achieved highly controllable, periodic structures at nano-, micro-, and dual-micro/nano scales on Ni.
Fabricated multi-directional nanostructures mimicking shark skin.
Created superhydrophobic dual-scale structures inspired by lotus leaf properties.
Demonstrated superior versatility and feature variation compared to linear polarization laser processing.

Conclusions:

The developed fs CV laser technique offers a versatile and efficient single-step method for biomimetic surface fabrication.
This approach enables the creation of complex structures with tunable scales and functionalities.
The technique holds significant potential for novel applications in materials processing and beyond.