Naslov
Molecular emulsions: a model for Lifshitz states in classical physics

Autori
Kežić, Bernarda ; Perera Aurelien

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Knjiga sazetaka-13eme Journees de la Matiere Condensee / - , 2012, 244-244

Skup
13eme Journees de la Matiere Condensee

Mjesto i datum
Montpellier, Francuska, 27.08.2012. - 31.08.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
micro-heterogeneity; aqueous mixtures; molecular dynamics simulation

Sažetak
Aqueous mixtures of small solute molecules are characterized by a strong micro-heterogeneity. This micro-heterogeneity is distinct from concentration fluctuations, and can be characterised as the analog of the Lifshitz state well known in condensed matter and high energy physics. It corresponds to a state where "particles" can emerge from a fluctuating background. The difficulty of distinguishing the two manifestations has plagued the computer simulations of aqueous mixtures over two decades, in particular in determining the nature of the long range part of the correlations in finite size simulations. By using a mode mixture of water and "weak-water", where we scale down the partial charges of the oxygen and hydrogen sites, we obtain various models of molecular emulsions, analogous to realistic binary aqueous mixtures in many ways, and that allows us to illustrate how fluctuations and micro-heterogeneity manifest themselves into the structural and thermodynamical quantities.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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