Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Rashmi C. Desai"'
Autor:
Rashmi C. Desai, Raymond Kapral
Physical and biological systems driven out of equilibrium may spontaneously evolve to form spatial structures. In some systems molecular constituents may self-assemble to produce complex ordered structures. This book describes how such pattern format
Publikováno v:
MATERIALS TRANSACTIONS. 45:1054-1059
Domain patterns in several classes of ferroelastics are studied using a Landau expansion in the strains and their derivatives. Examination of the local rotation, the non-order-parameter strains and the local energy density reveals the wedge and other
Publikováno v:
Langmuir. 19:1474-1485
We present a simple molecular model for the self-assembly of alkanethiols on gold. The model, a rigid rod representation of a molecule which is constrained to a given distance from the gold surface, allows direct long-time simulations of large-scale
Autor:
Debashish Chowdhury, Rashmi C. Desai
Publikováno v:
The European Physical Journal B. 15:375-384
A Bus Route Model (BRM) can be defined on a one-dimensional lattice, where buses are represented by "particles" that are driven forward from one site to the next with each site representing a bus stop. We replace the random sequential updating rules
Autor:
François Léonard, Rashmi C. Desai
Publikováno v:
Thin Solid Films. 357:46-52
The growth of alloy layers by molecular-beam deposition is considered theoretically, with emphasis on the connection between local variations in the composition and surface roughening. For alloy layers mismatched to the substrate, the elastic fields
Autor:
Rashmi C. Desai, Oliver Schoenborn
Publikováno v:
Journal of Statistical Physics. 95:949-979
An interface description and numerical simulations of model A kinetics are used for the first time to investigate the intra-surface kinetics of phase ordering on corrugated surfaces. Geometrical dynamical equations are derived for the domain interfac
Autor:
François Léonard, Rashmi C. Desai
Publikováno v:
Physical Review B. 58:8277-8288
Phase separation of alloys around dislocation lines due to edge- and screw-type dislocations is studied using a continuum model. The dependence of the lattice constant, bulk modulus, and shear modulus on composition is shown to determine the distribu
Autor:
Rashmi C. Desai, Mohamed Laradji
Publikováno v:
The Journal of Chemical Physics. 108:4662-4674
We study the elastic properties of homopolymer/homopolymer interfaces containing diblock copolymers by means of a theory of Gaussian fluctuations. The interfacial tension and the bending rigidity of the interface in the two-phase coexistence region a
Autor:
François Léonard, Rashmi C. Desai
Publikováno v:
Physical Review B. 57:4805-4815
We show that in the presence of substrate misfit and compositional stresses, static or growing films that undergo surface spinodal decomposition are always unstable to perturbations around the planar surface. For sufficiently rapid deposition process
Autor:
Rashmi C. Desai
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 244:81-90
A review of our recent work on the stability of ordered phases in diblock copolymer systems is given. The stability is investigated and kinetic pathways of order-order transitions are explored using our novel theory of anisotropic fluctuations. The a