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Incubation phenomena during UV‐pulse excimer laser processing of silicone elastomers
Author(s) -
Kolev Konstantin,
Tatchev Dragomir,
Armyanov Stephan,
Valova Eugenia,
Baert Kitty,
Hubin Annick
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44541
Subject(s) - materials science , irradiation , ablation , silicone , elastomer , excimer , excimer laser , laser , raman spectroscopy , swelling , laser ablation , composite material , optics , optoelectronics , physics , nuclear physics , engineering , aerospace engineering
Observations of the interaction of poly(dimethylsiloxane) (PDMS) sheet (210 μm thick) with KrF excimer laser irradiation (λ = 248 nm), with low energy of 50 mJ/pulse are presented. The negative ablation or swelling of the material caused by low frequency pulse irradiation is characterized by optical microscopy, μ‐Raman spectrometry and X‐ray micro‐tomography. The appearance of defected areas in the form of cones inside the sheet and changes of material chemistry are discussed. These phenomena are considered as a precursor of the ablation occurring after passing a threshold of absorbed laser irradiation energy. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44541.