Laser-assisted growth of microstructures on spatially confined substrates

Dolgaev, Sergei I; Кириченко, Н. А.; Simakin, A.V.; Shafeev, G. A.

doi:10.1016/j.apsusc.2007.02.074

Cited by 11 publications

(1 citation statement)

References 13 publications

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“…For such case, laser radiation passed through the infrared transparent oxide layers into the metals, and absorbed there within the penetration depth. The capillary forces and gradients surface tension are also one of the reasons for the microstructures formation (Dolgaev et al, 2007). In this way, we might have a molten subsurface having a capped layer in solid form.…”

Section: Resultsmentioning

confidence: 99%

Influence of number of laser shots on laser induced microstructures on Ag and Cu targets

et al. 2009

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Annealed and fine polished Ag and Cu samples are irradiated for 25, 50, 75, and 100 shots with a Q-Switched Nd:YAG laser in air and under high vacuum 10 26 Torr. The irradiated samples are investigated under scanning electron microscopy, which reveals the formation of laser induced ripples structures with spacing 10 mm to 25 mm. Careful analysis revealed that the ripple spacing is not only dependent on laser wavelength, target properties, but also on the number of laser shots. It is also observed that ripples spacing varies from center to edge of the thermal damage zone. Two-fold spacing is measured near the edge compared to spacing at the center of the crater. Anisotropic stresses and stress waves (shock waves) are guiding the laser induced heat energy through particular channels. Splashing cones are developed with the increase in the laser shots. More theoretical investigations are needed to study the laser ripple periodicity in the context of laser shots effect.

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Section: Resultsmentioning

confidence: 99%