Laser machining of special designed photopolymers-photochemical ablation mechanism

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Photopolymers based on the triazeno chromophore group (-N=N-N{lt}) have been developed. The absorption properties can be tailored for a specific irradiation wavelength. The photochemical exothermic decomposition yields high energetic gaseous products which are not contaminating the surface. The polymer can be structured with high resolution. No debris has been found around the etched corners. Maximum ablation rates of about 3 micrometer/pulse were achieved due to the dynamic absorption behavior (bleaching during the pulse). No physical or chemical modifications of the polymer surface could be detected after irradiation at the tailored absorption wavelength, whereas irradiation at different wavelengths resulted in modified ... continued below

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11 p.

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Lippert, T.; Dickinson, J.T.; Langford, S.C.; Furutani, H.; Fukumura, H.; Masuhara, H. et al. August 1, 1997.

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Description

Photopolymers based on the triazeno chromophore group (-N=N-N{lt}) have been developed. The absorption properties can be tailored for a specific irradiation wavelength. The photochemical exothermic decomposition yields high energetic gaseous products which are not contaminating the surface. The polymer can be structured with high resolution. No debris has been found around the etched corners. Maximum ablation rates of about 3 micrometer/pulse were achieved due to the dynamic absorption behavior (bleaching during the pulse). No physical or chemical modifications of the polymer surface could be detected after irradiation at the tailored absorption wavelength, whereas irradiation at different wavelengths resulted in modified (physical and chemical) surfaces.

Physical Description

11 p.

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OSTI as DE98003001

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  • SPIE conference, Limoges (France), 7-12 Aug 1997

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  • Other: DE98003001
  • Report No.: LA-UR--97-4093
  • Report No.: CONF-9708147--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 626472
  • Archival Resource Key: ark:/67531/metadc690305

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  • August 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 5, 2016, 6:29 p.m.

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Lippert, T.; Dickinson, J.T.; Langford, S.C.; Furutani, H.; Fukumura, H.; Masuhara, H. et al. Laser machining of special designed photopolymers-photochemical ablation mechanism, article, August 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc690305/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.