Št. zadetkov: 8
Izvirni znanstveni članek
Oznake:
lipidni vezikli;upogibna energija;adhezija veziklov;oblika veziklov;membransko brstenje;oblikovni prehodi;lipid vesicles;bending energy;vesicle adhesion;vesicle shape;membrane budding;shape transitions;
The adhesion of lipid vesicles to a rigid flat surface is investigated. We examine the influence of the membrane spontaneous curvature, adhesion strength, and the reduced volume on the stability and shape transformations of adhered vesicles. The minimal strength of the adhesion necessary to stabiliz ...
Leto:
2021
Vir:
Fakulteta za elektrotehniko (UL FE)
Izvirni znanstveni članek
Oznake:
topološki defekti;topološki naboj;numerične raziskave;orientacijski red;nematični tekoči kristali;tekoče kristalne lupine;biološke membrane;nanodelci;Gaussova ukrivljenost;elektrostatična analogija;anihilacija;topologija;topological defects;topological charge;numerical studies;orientational ordering;nematic liquid crystals;liquid crystalline shells;biological membranes;nanoparticles;Gaussian curvature;electrostatic analogy;annihilation;topology;
Topological defects (TDs) appear almost unavoidably in continuous symmetry breaking phase transitions. The topological origin makes their key features independent of systems’ microscopic details; therefore TDs display many universalities. Because of their strong impact on numerous material propertie ...
Leto:
2016
Vir:
Repozitorij Univerze v Ljubljani (RUL)
Izvirni znanstveni članek
Oznake:
topološki defekti;Gaussova ukrivljenost;samourejanje;tvorba in rast kristalov;topological defects;Gaussian curvature;self-assembling;crystal growth nucleation;
Effectively, two-dimensional (2D) closed films exhibiting in-plane orientational ordering (ordered shells) might be instrumental for the realization of scaled crystals. In them, ordered shells are expected to play the role of atoms. Furthermore, topological defects (TDs) within them would determine ...
Leto:
2017
Vir:
Fakulteta za elektrotehniko (UL FE)
Izvirni znanstveni članek
Oznake:
orientacijski red;ukrivljene nematične molekule;fleksibilne nematične lupine;ravnovesne oblike;relativni volumen;orientational ordering;curved nematic molecules;flexible nematic shells;equilibrium shapes;relative volume;
The impact of the intrinsic curvature of in-plane orientationally ordered curved flexible nematic molecules attached to closed 3D flexible shells was studied numerically. A Helfrich-Landau-de Gennes-type mesoscopic approach was adopted where the flexible shell’s curvature field and in-plane nematic ...
Leto:
2023
Vir:
Fakulteta za naravoslovje in matematiko (UM FNM)
Izvirni znanstveni članek
Oznake:
structural transitions;topological defects;membrane microvesicles;membrane curvature;membrane fission;vesiculation;
Vesiculation of biological membrane driven by curvature induced frustrations in membrane orientational ordering
Leto:
2013
Vir:
Digitalna knjižnica Univerze v Mariboru (DKUM)
Izvirni znanstveni članek
Oznake:
topološki defekti;nematski tekoči kristali;nematične lupine;geometrijski potenciali;ukrivljenost;topological defects;nematic liquid crystals;nematic shells;curvature;
We consider the theoretical and positional assembling of topological defects (TDs) in effectively two-dimensional nematic liquid crystal films. We use a phenomenological Helfrich– Landau–de Gennes-type mesoscopic model in which geometric shapes and nematic orientational order are expressed in terms ...
Leto:
2021
Vir:
Fakulteta za elektrotehniko (UL FE)
Izvirni znanstveni članek
Oznake:
biološke membrane;vezikli;model spontane ukrivljenosti;simulacije Monte Carlo;nematične lupine;orientacijski red;topološki defekti;biological membranes;vesicles;spontaneous curvature model;Monte Carlo simulations;nematic shells;orientational ordering;topological defects;
We studied biological membranes of spherical topology within the framework of the spontaneous curvature model. Both Monte Carlo simulations and the numerical minimization of the curvature energy were used to obtain the shapes of the vesicles. The shapes of the vesicles and their energy were calculat ...
Leto:
2014
Vir:
Digitalna knjižnica Univerze v Mariboru (DKUM)
Pregledni znanstveni članek
Oznake:
elektrostatski lipidni dvosloj;zwitterionski lipidni dvosloj;električni dvojni sloj;osmotski tlak;svobodna orientacijska stopnja lipidnih skupin;orientirano urejanje vodnih dipolov;adhezija lipidnih veziklov;elastičnost lipidnih dvoslojev;oblike lipidnh veziklov;lipid bilayer electrostatics;zwitterionic lipid bilayers;electric double layer;osmotic pressure;orientational degree of freedom of lipid headgroups;orientational ordering of water dipoles;adhesion of lipid vesicles;lipid bilayer elasticity;lipid vesicle shapes;
In this review paper, we theoretically explain the origin of electrostatic interactions between lipid bilayers and charged solid surfaces using a statistical mechanics approach, where the orientational degree of freedom of lipid head groups and the orientational ordering of the water dipoles are con ...
Leto:
2021
Vir:
Fakulteta za elektrotehniko (UL FE)