Making "Molecular Balloons" in Laser-Induced Explosive Boiling of Polymer Solutions
Elodie Leveugle, Aaron Sellinger, James M. Fitz-Gerald, and Leonid V. Zhigilei
Department of Materials Science and Engineering, University of Virginia
Computational Materials Group
(Click on images below to view animations)
Slow energy deposition - no stress confinement
Fast energy deposition - regime of partial stress confinement
Animated sequences of snapshots that can be viewed by clicking on the above images show the formation of transient "molecular balloons" driven by the explosive liquid-vapor phase transformation in a 60 nm droplet containing 16 wt.% of randomly oriented polymer chains.
Matrix molecules and units of polymer chains are shown by black and blue dots, respectively.
References:
E. Leveugle, A. Sellinger, J. M. Fitz-Gerald, and L. V. Zhigilei,
Making molecular balloons in laser-induced explosive boiling of polymer solutions, Phys. Rev. Lett. 98, 216101, 2007.
Full Text: PDF (650 kB)
E. Leveugle and L. V. Zhigilei,
Molecular dynamics simulation study of the ejection and transport of polymer molecules in matrix-assisted pulsed laser evaporation, J. Appl. Phys. 102, 074914, 2007.
Full Text: PDF (4.27 MB)
E. Leveugle, L. V. Zhigilei, A. Sellinger, and J. M. Fitz-Gerald,
Computational and experimental study of the cluster size distribution in MAPLE, Appl. Surf. Sci. 253, 6456-6460, 2007.
Full Text: PDF (955 kB)
A. Sellinger, E. Leveugle, J. M. Fitz-Gerald, L. V. Zhigilei,
Generation of surface features in films deposited by matrix-assisted pulsed laser evaporation: the effects of the stress confinement and droplet landing velocity, Appl. Phys. A 92, 821-829, 2008.
Full Text: PDF (1.72 MB)
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This material is based upon work supported by the National Science Foundation under Grants No. 0422632 and 0403876.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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