Időpont: 2019. április 15-én (hétfő) 14:00 órakor
Helyszín: Pannon Egyetem, Fizika és Mechatronika Intézet C338 tárgyaló (Veszprém, Egyetem u. 10.)

Enrique Velasco (Department of Theoretical Condensed Matter Physics, Univesidad Autonoma de Madrid, Madrid, Spanyolország)
Előadásának címe és absztraktja: Domains in lipid monolayers
Lipid monolayers usually exhibit a first-order transition between ordered and disordered phases. Despite the huge amount of experimental work on these systems, some intriguing behaviours are still open. To understand some of these problems from the theoretical side, we have used a hierarchical approach, starting from atomistic simulations using realistic force fields. These results allowed us to formulate a coarse-grained model based on effective two-dimensional particles that interact through anisotropic dispersion and dipolar interactions. Phase coexistence and properties such as line tension and elastic constants are computed. These results are thought to be relevant for mesoscopic models, which hopefully can answer questions such as shape of domains, growth, possible stabilisation of domains, etc.

Yuri Martínez-Ratón (Departamento de Matemáticas, Escuela Politécnica Superior, Universidad Carlos III de Madrid, Madrid, Spanyolország)
Előadásának címe és absztraktja: DFT for uniform phases of hard particles in 2D: Hard triangles as a working example
The Classical Density Functional Theory (DFT) constitutes one of the most successful theoretical tool in the study of classical fluids at bulk or under confinement. In particular, models of fluids made of hard anisotropic particles have been extensively used for the
theoretical study of liquid-crystal properties, mainly in three dimensions. Recent experimental techniques allows a high confinement of these fluids in such a way that the system becomes closely two-dimensional. In this talk we present one version of DFT, the so called Scaled Particle Theory, particularized for a two-dimensional fluid made of hard isosceles triangles with the purpose to predict the possible symmetries of the uniform phases and the phase transitions between them. Two important cases are separately analyzed: (i) the one-component fluid and (ii) certain symmetric binary mixtures.

Az MTA VEAB Fizikai Munkabizottsága és a Komplex Molekuláris Rendszerek Modellezése és Szimulációja Kutatócsoport közös tudományos előadásokat szervez, melyre Önt és munkatársait tisztelettel meghívja!

A program a 20385-3/2018/FEKUSTRAT azonosító számú, „Felsőoktatási Intézményi Kiválósági Program - Tématerületi Program” című projekt támogatásával valósul meg