Liquid-vapor phase behavior of a symmetrical binary fluid mixture

Wilding, Nigel B.; Schmid, Friederike; Nielaba, Peter

doi:10.1103/physreve.58.2201

Cited by 134 publications

(162 citation statements)

References 44 publications

(84 reference statements)

Supporting

Mentioning

145

Contrasting

Unclassified

Order By: Relevance

“…Apart from the stable phase transitions we have also depicted in these ®gures the metastable phase equilibria; they are of relevance for the dynamic properties of the system (for a more detailed discussion, see Refs. [2,22]). A comparison with computer simulations shows that the MSA gives reasonably good results for the bulk case.…”

Section: Phase Diagramsmentioning

confidence: 99%

“…The symmetry of our system leads to a reduction of types of phase diagrams that we encounter [2]: we observe three different archetypes which are distinguished by the location where the so-called !-line (i.e. the critical line of the¯uid demixing transition) intersects the ®rst order G-L coexistence curve.…”

Section: Introductionmentioning

confidence: 96%

“…We have investigated the in¯uence of the interaction parameter on the phase behaviour employing the MSA method, showing that the transition between the types of phase diagrams can be triggered by this parameter. Hence, in this investigation we re®ne in a quantitative way a study that was based on a simple mean ®eld approach [2]. The MSA permits in addition, to identify metastable transitions that might be of relevance when studying dynamic processes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phase Transitions and Critical Behaviour of Binary Liquid Mixtures

Kahl

Schöll-Paschinger

Lang

2001

Monatshefte Fuer Chemie/Chemical Monthly

View full text Add to dashboard Cite

Summary. Compared to the simple one-component case, the phase behaviour of binary liquid mixtures shows an incredibly rich variety of phenomena. In this contribution we restrict ourselves to so-called binary symmetric mixtures, i.e. where like-particle interactions are equal (F 11 (r) F 22 (r)), whereas the interactions between unlike¯uid particles differ from those of likes ones (F 11 (r) T F 12 (r)). Using both the simple mean spherical approximation and the more sophisticated selfconsistent Ornstein-Zernike approximation, we have calculated the structural and thermodynamic properties of such a system and determine phase diagrams, paying particular attention to the critical behaviour (critical and tricritical points, critical end points). We then study the thermodynamic properties of the same binary mixture when it is in thermal equilibrium with a disordered porous matrix which we have realized by a frozen con®guration of equally sized particles. We observe ± in qualitative agreement with experiment ± that already a minute matrix density is able to lead to drastic changes in the phase behaviour of the¯uid. We systematically investigate the in¯uence of the external system parameters (due to the matrix properties and the¯uid±matrix interactions) and of the internal system parameters (due to the¯uid properties) on the phase diagram.

show abstract

Section: Phase Diagramsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phase Transitions and Critical Behaviour of Binary Liquid Mixtures

Kahl

Schöll-Paschinger

Lang

2001

Monatshefte Fuer Chemie/Chemical Monthly

View full text Add to dashboard Cite

show abstract

“…These results are compared with those previously obtained by Monte-Carlo simulations [13,14]. The system under study is a symmetrical hard sphere square-well binary mixture.…”

Section: Resultsmentioning

confidence: 84%

Ab initiostudy of the vapour-liquid critical point of a symmetrical binary fluid mixture

Patsahan¹,

Kozlovskii²,

Melnyk

2000

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Abstract. A microscopic approach to the investigation of the behaviour of a symmetrical binary fluid mixture in the vicinity of the vapour-liquid critical point is proposed. It is shown that the problem can be reduced to the calculation of the partition function of a 3D Ising model in an external field. For a square-well symmetrical binary mixture we calculate the parameters of the critical point as functions of the microscopic parameter r measuring the relative strength of interactions between the particles of dissimilar and similar species. The calculations are performed at intermediate (λ = 1.5) and moderately long (λ = 2.0) intermolecular potential ranges. The obtained results agree well with the ones of computer simulations.

show abstract

“…Indeed, even "simple" mixtures consisting of spherical particles can display non-trivial phase behaviour including triple points and critical end points not present for onecomponent systems. 3,4 Correspondingly, even more complex behaviour is observed for particles with internal degrees of freedom such as magnetic particles 5,6 and mixtures involving shape-anisotropic particles such as colloidal rods. 7 Besides purely numerical approaches such as MonteCarlo or molecular (Brownian) dynamics computer simulations, classical density functional theory (DFT) has proved to be a very accurate tool for describing both the homogeneous phase behaviour of mixtures and, at least for simple models, also the inhomogeneous structure occurring at interfaces.…”

Section: Introductionmentioning

confidence: 99%

Phase separation dynamics in a two-dimensional magnetic mixture

Lichtner

Archer

Klapp

2012

The Journal of Chemical Physics

View full text Add to dashboard Cite

Based on classical density functional theory (DFT), we investigate the demixing phase transition of a two-dimensional, binary Heisenberg fluid mixture. The particles in the mixture are modeled as Gaussian soft spheres, where one component is characterized by an additional classical spin-spin interaction of Heisenberg type. Within the DFT we treat the particle interactions using a mean-field approximation. For certain magnetic coupling strengths we calculate phase diagrams in the density-concentration plane. For sufficiently large coupling strengths and densities, we find a demixing phase transition driven by the ferromagnetic interactions of the magnetic species. We also provide a microscopic description (i.e., density profiles) of the resulting non-magnetic/magnetic fluid-fluid interface. Finally, we investigate the phase separation using dynamical density functional theory (DDFT), considering both nucleation processes and spinodal demixing.Comment: 15 pages, 10 figure

show abstract

Liquid-vapor phase behavior of a symmetrical binary fluid mixture

Cited by 134 publications

References 44 publications

Phase Transitions and Critical Behaviour of Binary Liquid Mixtures

Phase Transitions and Critical Behaviour of Binary Liquid Mixtures

Ab initiostudy of the vapour-liquid critical point of a symmetrical binary fluid mixture

Phase separation dynamics in a two-dimensional magnetic mixture

Contact Info

Product

Resources

About