Laser ablation of bicomponent systems: A probe of molecular ejection mechanisms

Yingling, Yaroslava G.; Zhigilei, Leonid V.; Garrison, Barbara J.; Koubenakis, Antonis; Labrakis, John; Georgiou, Savas
March 2001
Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1631
Academic Journal
A combined experimental and molecular dynamics simulation study of laser ablation of a model bicomponent system with solutes of different volatility provides a consistent picture of the mechanisms of material ejection. The comparison of the ejection yields shows that there are two distinct regimes of molecular ejection, desorption at low laser fluences, and a collective ejection of a volume of material or ablation at higher fluences. Ejection of volatile solutes dominates in the desorption regime, whereas nonvolatile solutes are ejected only in the ablation regime. © 2001 American Institute of Physics.


Related Articles

  • Molecular-dynamic simulation of nanosized droplet spreading over a continual solid surface. Samsonov, V.; Zhukova, N.; Dronnikov, V. // Colloid Journal;Dec2009, Vol. 71 Issue 6, p835 

    Molecular dynamics methods are employed for a comparative study of the spread of nanosized simple fluid droplets and nanodroplets composed of model chains that reflect molecules of normal alkanes over a solid substrate. The effects of the droplet size, the energy of the molecule-substrate...

  • Dynamics and stability of radiation-driven double ablation front structures. Drean, V.; Olazabal-Loumé, M.; Sanz, J.; Tikhonchuk, V. T. // Physics of Plasmas;Dec2010, Vol. 17 Issue 12, p122701 

    The dynamics of double ablation front (DAF) structures is studied for planar targets with moderate atomic number ablators. These structures are obtained in hydrodynamic simulations for various materials and laser intensities and are qualitatively characterized during the acceleration stage of...

  • The Materials Genome Project. Aourag, H. // AIP Conference Proceedings;9/23/2008, Vol. 1047 Issue 1, p48 

    In the past, the search for new and improved materials was characterized mostly by the use of empirical, trial- and-error methods. This picture of materials science has been changing as the knowledge and understanding of fundamental processes governing a material’s properties and...

  • Molecular dynamics simulations of cluster distribution from femtosecond laser ablation in aluminum. Sonntag, S.; Trichet Paredes, C.; Roth, J.; Trebin, H.-R. // Applied Physics A: Materials Science & Processing;Aug2011, Vol. 104 Issue 2, p559 

    Femtosecond laser ablation and plume evolution of aluminum is investigated for various inhomogeneous laser pulses. For the simulations of the atoms the molecular dynamics code IMD is used. The ablated gas-phase is scanned by a cluster algorithm (DBSCAN), from which we gain a cluster size...

  • Molecular dynamics study of femtosecond laser interactions with Cr targets. Karim, Eaman T.; Lin, Zhibin; Zhigilei, Leonid V. // AIP Conference Proceedings;7/30/2012, Vol. 1464 Issue 1, p280 

    The mechanisms of femtosecond laser melting, spallation and ablation of a chromium target are investigated in simulations performed with a hybrid computational model that combines the classical molecular dynamics method with a continuum description of the laser excitation of conduction band...

  • Formation of cobalt bilayer islands on Cu(100) surface. Kolesnikov, S. V.; Klavsyuk, A. L.; Saletsky, A. M. // Physics of the Solid State;Jun2009, Vol. 51 Issue 6, p1254 

    The formation and evolution of Co islands on Cu(100) surface are studied using molecular dynamics simulation and kinetic Monte Carlo method. Two regimes of cluster growth are found. It is revealed that the transition from one growth regime to another is associated with the formation of...

  • Maximum asymmetry in strain induced mechanical instability of graphene: Compression versus tension. Zhang, Yu; Liu, Feng // Applied Physics Letters;12/12/2011, Vol. 99 Issue 24, p241908 

    We demonstrate that graphene, as the thinnest possible solid membrane of only one atomic layer thick, exhibits the maximum asymmetry in tensile versus compressive strain induced mechanical instability. Using continuum mechanics analysis and molecular dynamics simulations, we show that for...

  • Molecular dynamics nanoindentation simulation of an energetic material. Chen, Yi-Chun; Nomura, Ken-ichi; Kalia, Rajiv K.; Nakano, Aiichiro; Vashishta, Priya // Applied Physics Letters;10/27/2008, Vol. 93 Issue 17, p171908 

    Molecular dynamics simulation approach is used to study nanoindentation of the (100) crystal surface of cyclotrimethylenetrintramine (RDX) by a diamond indenter. The indenter and substrate atoms interact via reactive force fields. Nanoindentation causes significant heating of the RDX substrate...

  • Behavior of peptides combining 1 alanine residue and 8 glycine residues on papain associated with structural fluctuations. Nishiyama, Katsuhiko // Journal of Applied Physics;Dec2011, Vol. 110 Issue 11, p114701 

    I investigated the behavior of the peptides combining 1 ALA residue and 8 GLY residues on papain associated with structural fluctuations via molecular dynamics and docking simulations. Although the chance of binding to sites near the active center of papain was reduced by replacing the GLY...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics