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Condensed Matter Seminars

ics Condensed Matter
Thursday, April 21, 2011
3:30 PM
Physics Building, Room 204
Note special time.
Note special room.
Chengping Wu [Host: Genya Kolomeisky]
UVa
"Computational Study of ultra-short-pulse laser-metal interaction"
 
 Slideshow (PDF)
ABSTRACT:
Rapid progress in the development of accessible sources of short (pico- and femtosecond) laser pulses opens up new opportunities for surface modification with high accuracy and spatial resolution. But the small size of the laser-modified region makes experimental characterization of laser-induced structural changes challenging and, at the same time, the fast and highly localized energy deposition in short pulse laser processing unavoidably creates the conditions of strong thermodynamic, electronic, and mechanical nonequilibrium, making the theoretical description of the structural transformations difficult. On the other hand, atomic-level computer modeling has the ability to provide detailed information on the complex structural and phase transformations induced by short pulse laser irradiation and can assist in the advancement of laser-driven applications. In this presentation, I will talk a series simulation I have done or am doing, especially focus on the simulation “laser irradiation on layered targets (Ag film-Cu substrate)”.
SLIDESHOW:

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