Physics – Condensed Matter – Materials Science
Scientific paper
2011-07-16
Physics
Condensed Matter
Materials Science
To appear in the Journal of Applied Physics
Scientific paper
A hybrid 2D theoretical model is presented to describe thermoplastic deformation effects on silicon surfaces induced by single and multiple ultrashort pulsed laser irradiation in submelting conditions. An approximation of the Boltzmann transport equation is adopted to describe the laser irradiation process. The evolution of the induced deformation field is described initially by adopting the differential equations of dynamic thermoelasticity while the onset of plastic yielding is described by the von Mise's stress. Details of the resulting picometre sized crater, produced by irradiation with a single pulse, are then discussed as a function of the imposed conditions and thresholds for the onset of plasticity are computed. Irradiation with multiple pulses leads to ripple formation of nanometre size that originates from the interference of the incident and a surface scattered wave. It is suggested that ultrafast laser induced surface modification in semiconductors is feasible in submelting conditions, and it may act as a precursor of the incubation effects observed at multiple pulse irradiation of materials surfaces.
Aifantis K. E.
Stratakis Emmanuel
Tsibidis George D.
No associations
LandOfFree
Thermoplastic deformation of silicon surfaces induced by ultrashort pulsed lasers in submelting conditions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermoplastic deformation of silicon surfaces induced by ultrashort pulsed lasers in submelting conditions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoplastic deformation of silicon surfaces induced by ultrashort pulsed lasers in submelting conditions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-478499