Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Ghaisas, S. V."'
Autor:
Ghaisas, S. V.
We introduce a solid on solid lattice model for growth with conditional evaporation. A measure of finite size effects is obtained by observing the time invariance of distribution of local height fluctuations. The model parameters are chosen so that t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602124
Autor:
Ghaisas, S. V.
Growth of interfaces during vapor deposition is analyzed on a discrete lattice. It leads to finding distribution of local heights, measurable for any lattice model. Invariance in the change of this distribution in time is used to determine the finite
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509684
Autor:
Ghaisas, S. V.
Growth of interfaces during vapor deposition are analyzed on a discrete lattice. Foe a rough surface, relation between the roughness exponent alpha, and corresponding step-step (slope-slope) couplings is obtained in (1+1) and (2+1) dimensions. From t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307411
Autor:
Ghaisas, S. V.
A method based on the kinetics of adatoms on a growing surface under epitaxial growth at low temperature in (1+1) dimensions is proposed to obtain a closed form of local growth equation. It can be generalized to any growth problem as long as diffusio
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301472
Autor:
Ghaisas, S. V.
Mounding instability in a conserved growth from vapor is analysed within the framework of adatom kinetics on the growing surface. The analysis shows that depending on the local structure on the surface, kinetics of adatoms may vary, leading to disjoi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207630
Autor:
Ghaisas, S. V.
A continuum growth equation in 1+1 dimensions is obtained by considering the contributions to the underlying current from kinetics of adatoms on the surface. These considerations reproduce the slope dependent term that represents a stable or an unsta
Externí odkaz:
http://arxiv.org/abs/cond-mat/0202210
Autor:
Sander, L. M., Ghaisas, S. V.
Many studies have confirmed that cracks in brittle materials branch when the crack speed exceeds a certain threshold velocity, but the value of that threshold is not understood. Almost all theoretical calculations overestimate the threshold by factor
Externí odkaz:
http://arxiv.org/abs/cond-mat/9901166
We study the dynamics of cracks in brittle materials when the velocity of the crack is comparable to the sound velocity by means of lattice simulations. Inertial and damped dynamics are analyzed. It is shown that dissipation strongly influences the s
Externí odkaz:
http://arxiv.org/abs/cond-mat/9812391
Autor:
Kshirsagar, Abhijit K., Ghaisas, S. V.
Using the dynamic renormalization group (DRG) technique, we analyze general nonlinearities in a conservative nonlinear growth equation with non-conserved gaussian white noise. We show that they fall in two classes only: the Edwards-Wilkinson and Lai-
Externí odkaz:
http://arxiv.org/abs/cond-mat/9512171
Stochastic simulation results, appropriate for Molecular Beam Epitaxy, involving ballistic deposition and thermally activated Arrhenius diffusion of adatoms are presented for one- and two-dimensional substrates, allowing for overhangs and bulk vacanc
Externí odkaz:
http://arxiv.org/abs/cond-mat/9401043