SKM 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
BP: Fachverband Biologische Physik
BP 11: Poster Session I
BP 11.63: Poster
Dienstag, 28. März 2023, 12:30–15:30, P1
Protein induced lipid demixing in homogeneous membranes — •Piotr Nowakowski1, 2, Bernd Henning Stumpf3, Ana-Sunčana Smith1,3, and Anna Maciołek2,4 — 1Institut Ruđer Bošković, Zagreb, Croatia — 2Max Planck Institute for Intelligent Systems, Stuttgart, Germany — 3Friedrich–Alexander–Universität Erlangen–Nürnberg, Erlangen, Germany — 4Instytut Chemii Fizycznej Polskiej Akademii Nauk, Warszawa, Poland
We study a model of a lipid bilayer membrane with two order parameters: the chemical composition described using the Gaussian model and the spatial configuration described with the elastic deformation model of a membrane with a finite thickness, or equivalently, for an adherent membrane. We assume a linear coupling between the two order parameters. Using the exact solution, we calculate the correlation functions and order parameters profiles. We also study the domains that form around inclusions on the membrane. We propose and compare several distinct ways to quantify the size of such domains. Despite of its simplicity, the model has many interesting features like Fisher–Widom line and two distinct critical regions.