Date: 22 Feb 2013
Molecular dynamics study of nanodroplets: Initial compressed phase of collisions against a flat wall
- Sangrak Kim
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Collisions of spherical nanodroplets against a flat wall are studied using molecular dynamics simulations. The initial compressed phase of the collisions is focused on to illuminate the elastic behavior of the droplet. The normal forces F z between the droplet and the wall are calculated at varying impact velocities u along the z-direction and fitted to a power law of the form F z ∝ ξ n , where ξ denotes a deformation. If u is less than 0.2 and ξ < 0.8, then the normal forces all together satisfy a power law with exponent n ≈ 1.5, corresponding to the Hertz law. However, if u is greater than 0.3, then the exponent n changes to around 2.0 ∼ 2.4.
J. Haile, Molecular Dynamics Simulation (John Wiley & Sons, New York, 1992).
H. Hertz and J. Reine, Angew. Math. 92, 156 (1881); D. Landau and E. Lifshitz, Course of Theoretical Physics, Theory of Elasticity (Pergamon, London, 1959), Vol. 7.
- Molecular dynamics study of nanodroplets: Initial compressed phase of collisions against a flat wall
Journal of the Korean Physical Society
Volume 62, Issue 3 , pp 443-446
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- The Korean Physical Society
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- Molecular dynamics
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- Sangrak Kim (1)
- Author Affiliations
- 1. Department of Physics, Kyonggi University, Suwon, 440-760, Korea