Issue 36, 2011

Light driving force for surface patterning on azobenzene-containing polymers

Abstract

In this paper, we investigated the effect of light driving force induced surface deformation on azobenzene-containing polymers. The surface deformation is attributed to light-induced mass migration inside the polymers. Circular cap arrays are firstly fabricated by high power laser ablationvia polarization controlled three-beam interference. The circular caps are subsequently exposed to polarization controlled two-beam interfering field. The results illuminate that when the interfering laser beams are both set to P polarization, the circular caps are deformed. While the laser beams are of other interfering modes like (S, S) and (+45° , −45°), the caps are seldom deformed. The circular caps are also exposed to single intensity-homogeneous linearly polarized laser beam. The deformation of the caps keeps the same direction as the irradiating polarization. A model based on the focusing effect of the circular caps is addressed to explain the origin of the light driving force for mass migration in azopolymers. The all-optical approach for the production of deformed caps can be used to generate aspherical lens, which may be applied to many domains.

Graphical abstract: Light driving force for surface patterning on azobenzene-containing polymers

Article information

Article type
Paper
Submitted
07 Apr 2011
Accepted
07 Jun 2011
First published
10 Aug 2011

Phys. Chem. Chem. Phys., 2011,13, 16150-16158

Light driving force for surface patterning on azobenzene-containing polymers

J. Huang, S. Beckemper, S. Wu, J. Shen, Q. Zhang, K. Wang and A. Gillner, Phys. Chem. Chem. Phys., 2011, 13, 16150 DOI: 10.1039/C1CP21098J

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