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Mostrando ítems 11-20 de 12801
Double phase separation induced by polymerization in ternary blends of epoxies with polystyrene and poly(methyl methacrylate)
(American Chemical Society, 2001-04)
Ternary blends based on a stoichiometric mixture of diglycidyl ether of bisphenol A (DGEBA) and 4,4'-diaminodiphenyl sulfone (DDS), monodisperse polystyrene (PS, 8.3 × 104 g/mol), and monodisperse poly(methyl methacrylate) ...
Optimized random phase encryption
(Optical Society of America, 2018-08)
We propose for the first time, to the best of our knowledge, the use of optimized random phases (ORAPs) in a double random phase encryption scheme (DRPE). In DRPE schemes the convolution between two random phase functions ...
Regulation of phase boundaries and phase-segregated patterns in model membranes
(Elsevier Science, 2018-10)
Demixing of components has long been described in model membranes. It is a consequence of non-ideal lateral interactions between membrane components, and it causes the presence of segregated phases, forming patches (domains) ...
Phaseenvelopes for reservoir fluids with asphaltene onset lines: An integral computation strategy for complex combinations of two- and three phase behaviors
(American Chemical Society, 2018-01)
Despite the fact that many publications have dealt with asphaltene onset pressure (AOP) lines during the last 2 or 3 decades, no explicit method for tracing these and other related boundaries from equation of state (EoS) ...
On a two‐phase Stefan problem with convective boundary condition including a density jump at the free boundary
(John Wiley & Sons Ltd, 2020-04)
We consider a two-phase Stefan problem for a semi-infinite body x > 0, with a convective boundary condition including a density jump at the free boundary with a time-dependent heat transfer coefficient of the type h∕ √t, ...
Thermodynamic Analysis of the Phase Separation during the Polymerization of a Thermoset System into a Thermoplastic Matrix. II. Prediction of the Phase Composition and the Volume Fraction of the Dispersed Phase
(John Wiley & Sons Inc, 2004-04)
A thermodynamic simulation of the phase‐separation process of an off‐critical blend, based on a thermoplastic matrix with a reactive epoxy system undergoing polycondensation at a constant temperature, was performed. The ...
Defect-Induced Order-Order Phase Transition in Triblock Copolymer Thin Films
(American Chemical Society, 2021-02-08)
When a cylinder forming triblock copolymer thin film is exposed to supercritical carbon dioxide (scCO2), the system suffers an order-order phase transition from parallel (C∥) to perpendicularly oriented cylinders (C⊥). ...
Phase diagram of a model for topological superconducting wires
(American Physical Society, 2021-09)
We calculate the phase diagram of a model for topological superconducting wires with local s-wave pairing, spin-orbit coupling λ and magnetic field B - with arbitrary orientations. This model is a generalized lattice version ...
Formation and kinetics of transient metastable states in mixtures under coupled phase ordering and chemical demixing
(Europhysics Letters, 2009-12)
We present theory and simulation of simultaneous chemical demixing and phase ordering in a polymer-liquid-crystal mixture in conditions where isotropic-isotropic phase separation is metastable with respect to isotropic-nematic ...
Correction to the geometric phase by structured environments: The onset of non-Markovian effects
(American Physical Society, 2015-04)
We study the geometric phase of a two-level system under the presence of a structured environment, particularly analyzing its correction with the ohmicity parameter s and the onset of non-Markovianity. We first examine the ...