Formation of ArF laser-induced self-assembled macrostructures on poly methyl methacrylate and CR-39 polymers
| Autor: | Abbas Majdabadi, Parviz Parvin, Sh. Abolhosseini, M. Refahizadeh, H. Hojati Rad, Ali Reyhani, Seyedeh Zahra Mortazavi, Kaveh Silakhori |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
medicine.medical_treatment Biomedical Engineering 02 engineering and technology 010402 general chemistry 01 natural sciences Fluence Molecular physics law.invention Optics law medicine Focal length Cylindrical lens Instrumentation chemistry.chemical_classification Excimer laser business.industry Polymer 021001 nanoscience & nanotechnology Laser Poly(methyl methacrylate) Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Wavelength chemistry visual_art visual_art.visual_art_medium 0210 nano-technology business |
| Zdroj: | Journal of Laser Applications. 29:022008 |
| ISSN: | 1938-1387 1042-346X |
| DOI: | 10.2351/1.4980163 |
| Popis: | ArF excimer laser at λ = 193 nm induces the regular macrostructures on poly methyl methacrylate (PMMA) and CR-39 with the periodicity Λ under the proper UV doses. The periodic self-organizing pattern lucidly appears on the polymeric surface, creating the grooves parallel along with the direction of the focal line of the cylindrical lens. The spatial period Λ is enlarged in terms of the focal length f varying tens of microns, much larger than the laser wavelength (22–145 μm, Λ ≫ λ). The interspacing also alters in terms of the incident angle θ by the expression 1 / cos θ, however it remains nearly invariant against the laser fluence F ranging several hundreds of mJ/cm2. Finally, the crisscross macroripples are created by situating a couple of cylindrical lenses in the orthogonal configuration. The formation of the gridiron patterns on PMMA and CR-39 attests that the linear superposition holds accordingly. |
| Databáze: | OpenAIRE |
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