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Relationship between self-organization and creation-resorption of microstructural defects under ultra-short laser irradiation
Université Jean Monnet Saint Etienne, Université de Lyon, SAINT ETIENNE
Laboratoire Hubert Curien
Optical Physics Materials Science Condensed Matter Physics 
Full Description:

During the irradiation of materials by ultrashort laser pulses, periodic nanostructuring of surfaces
appears called LIPSS (" Laser-induced periodic structures Surface "),or "ripples". Ultrashort laser energy which is deposited and distributed inhomogeneously in the material will initiate local thermal
stresses and/or transient phase changes which can cause micro - structural changes. High resolution backscattered electrons diffraction analysis (HR-EBSD) has demonstrated the high potential of the analysis of these periodic nanostructures.

The main objectives of this project (3 years) will be to investigate ultrashort laser – materials interaction mechanisms to establish a correlation between the creation and resorption of microstructural defects in materials and the periodic self-organization effects observed after ultrashort irradiation. The structural disorder will be quantified by transmission electron microscopy.

The PhD student will be involved in transient plasmonic excitation resulting from ultrashort laser
–materials interaction at the Lawrence Berkeley National Laboratory (LBNL, US), through temporally and spatially resolved pump-probe experiments.

These works belong to the frame of Excellence Laboratory LabeX MANUTECH-SISE.

Posted on: 11 February 2015Deadline to apply: 15 March 2015Start Date: 01 October 2015 Duration: 36 months
The Fund category is Public Funding - University and the salary is 25-30k€ annual gross
Doctoral School is Sciences, engineering, health in the Rhône-Alpes Region.

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