Data di Pubblicazione:
2007
Citazione:
Microphase morphology in 2D fluids under lateral confinement / A. Imperio, L. Reatto. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - 76:4(2007), pp. 040402.040402.1-040402.040402.4.
Abstract:
We study the effects of confinement between two parallel walls on a two dimensional fluid with competing
interactions which lead to the formation of particle microdomains at the thermodynamic equilibrium microphases
or microseparation . The possibility to induce structural changes of the morphology of the microdomains
is explored, under different confinement conditions and temperatures. In the presence of neutral walls,
a switch from stripes of particles to circular clusters droplets occurs as the temperature decreases, which does
not happen in bulk. While the passage from droplets to stripes, as the density increases, is a well-known
phenomenon, the change of the stripes into droplets as an effect of temperature is rather unexpected. Depending
on the wall separation and on the wall-fluid interaction parameters, the stripes can switch from parallel to
perpendicular to the walls and also a mixed morphology can be stable.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Boundary layers ; confined flow ; drops ; pattern formation ; two-phase flow
Elenco autori:
A. Imperio, L. Reatto
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