Micro-cracks on crosslinked Poly(dimethylsiloxane) (PDMS) surface treated by nanosecond laser irradiation
Source abstract
Abstract
Abstract Surface morphology plays a critical role in the functionality of PDMS. In this work, micro-cracks were prepared on PDMS surfaces by nanosecond pulsed laser irradiation under ambient conditions. To fully investigate the resulting morphologies and the underlying processing mechanism, confocal microscopy, scanning electron microscopy (SEM), μ-Raman, 2D Raman and atomic force microscope (AFM) methods were employed to observe the laser treated PDMS samples. The results reveal that the micro cracks are the dominated morphology along the laser scanning routes, with lengths ranging from 56 μm to 113 μm while the angles varied from 40° to 90°. To control crack propagation, the effect of laser fluence and scanning speed on the topography of the cracks was studied and a thermal-stress model was established to explain the propagation process. It is concluded that laser irradiation is an easy method of pattern PDMS surface with micro/nano dual scale structures.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Laser Material Processing Techniques · Surface Roughness and Optical Measurements · Adhesion, Friction, and Surface Interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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