Results 11 to 20 of about 5,261,050 (250)
Kinetic cross coupling between non-conserved and conserved fields in phase field models [PDF]
, 2012 We present a phase field model for isothermal transformations of two component alloys that includes Onsager kinetic cross coupling between the non-conserved phase field and the conserved concentration field.
Efim A. Brener +4 more
core +2 more sources
Phase-field crystal model with a vapor phase [PDF]
Physical Review E, 2013 Phase-Field Crystal (PFC) models are able to resolve atomic length scale features of materials during temporal evolution over diffusive time scales. Traditional PFC models contain solid and liquid phases, however many important materials processing phenomena involve a vapor phase as well.
Schwalbach, Edwin J. +3 more
openaire +3 more sources
Scale-free phase field theory of dislocations [PDF]
, 2014 According to recent experimental and numerical investigations if the characteristic size of a specimen is in the submicron size regime several new interesting phenomena emerge during the deformation of the samples.
Groma, Istvan +2 more
core +2 more sources
Phase Field Modeling of Fast Crack Propagation [PDF]
, 2005 We present a continuum theory which predicts the steady state propagation of cracks. The theory overcomes the usual problem of a finite time cusp singularity of the Grinfeld instability by the inclusion of elastodynamic effects which restore selection of
A. A. Griffith +9 more
core +2 more sources
Corners in phase-field theory [PDF]
Physical Review E, 2021 Phase-field models for strongly anisotropic surface energy need to be regularized to remove the ill posedness of the dynamic equations. Regularization introduces a new length scale, the corner size, also called the bending length. For large corner size, with respect to interface thickness, the phase-field method is known to converge asymptotically ...
openaire +3 more sources
Sliding phases via magnetic fields [PDF]
Physical Review B, 2001 We show that three dimensional "sliding" analogs of the Kosterlitz-Thouless phase, in stacked classical two-dimensional XY models and quantum systems of coupled Luttinger Liquids, can be enlarged by the application of a parallel magnetic field, which has the effect of increasing the scaling dimensions of the most relevant operators that can perturb the
Sondhi, S. L., Yang, Kun
openaire +2 more sources
Multipass wide-field phase imager
Optics Express, 2023 Advances in optical imaging always look for an increase in sensitivity and resolution among other practicability aspects. Within the same scope, in this work we report a versatile interference contrast imaging technique, with high phase sensitivity and a large field-of-view of several mm2.
Álvaro Cuevas +7 more
openaire +4 more sources
Phase equilibrium in two orbital model under magnetic field
, 2006 The phase equilibrium in manganites under magnetic field is studied using a two orbital model, based on the equivalent chemical potential principle for the competitive phases.
Dagotto E +6 more
core +1 more source
A temperature-dependent phase-field model for phase separation and damage [PDF]
, 2015 In this paper we study a model for phase separation and damage in thermoviscoelastic materials. The main novelty of the paper consists in the fact that, in contrast with previous works in the literature (cf., e.g., [C. Heinemann, C.
Heinemann, C. +3 more
core +3 more sources
Field dislocation mechanics and phase field crystal models [PDF]
Physical Review B, 2020 A new formulation of the Phase Field Crystal model is presented that is consistent with the necessary microscopic independence between the phase field, reflecting the broken symmetry of the phase, and both mass density and elastic distortion. Although these quantities are related in equilibrium through a macroscopic equation of state, they are ...
Amit Acharya, Jorge Viñals
openaire +2 more sources