Imaging-XPS/Raman investigation on the carbonization of polyimide after irradiation at 308 nm |
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| Authors: | T Lippert E Ortelli J-C Panitz F Raimondi J Wambach J Wei and A Wokaun |
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| Institution: | (1) Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am M?hlenberg 1, 14476 Potsdam-Golm, Germany;(2) Department of Colloids, Max Planck Institute of Colloids and Interfaces, Am M?hlenberg 1, 14476 Potsdam-Golm, Germany;(3) Department of Chemistry, Potsdam University, K.-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany; |
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| Abstract: | The laser ablation of polyimide was studied using 308 nm laser irradiation mJ cm-2. Confocal Raman microscopy revealed the deposition of carbon surrounding the ablation crater, which consists of amorphous carbon with some crystalline features. Inside the crater, graphitic material was detected on top of the cones, very similar to the material from cw-Ar+ ion laser irradiation. FT-Raman measurements reveal the presence of intermediates of the polyimide decomposition. Imaging-X-ray photoelectron spectroscopy confirmed the deposition of carbon material surrounding the ablation crater and showed that the oxygen and nitrogen contents of the remaining material decrease. |
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