Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5352514 | Applied Surface Science | 2016 | 8 Pages |
Abstract
With increasing of the fluence and the number of the pulses chemical transformations are revealed in the entire laser treated area and hence decreasing of the optical transmittance is observed. The incubation gets saturation after a certain number of pulses and the laser ablation of the material begins efficiently. At the UV and VIS wavelengths the number of the initial pulses, at which the optical transmittance begins to reduce, decreases from 16 up to 8 with increasing of the laser fluence up to 1.0, 2.5 and 10Â JÂ cmâ2 for 266, 355 and 532Â nm, respectively. In the case of 1064Â nm the optical transmittance begins to reduce at 11th pulse incident at a fluence of 13Â JÂ cmâ2 and the number of the pulses decreases to 8 when the fluence reaches value of 16Â JÂ cmâ2. The threshold laser fluence needed to induce incubation process after certain number of pulses of 8 is different for every wavelength irradiation as the values increase from 1.0 for 266Â nm up to 16Â JÂ cmâ2 for 1064Â nm. The incubation and the ablation processes occur in the PDMS elastomer material during its pulsed laser treatment are a complex function of the wavelength, fluence, number of pulses and the material properties as well.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
N.E. Stankova, P.A. Atanasov, Ru.G. Nikov, R.G. Nikov, N.N. Nedyalkov, T.R. Stoyanchov, N. Fukata, K.N. Kolev, E.I. Valova, J.S. Georgieva, St.A. Armyanov,