Št. zadetkov: 12
Magistrsko delo
Oznake:
topološki defekti;Napolijevo polje;tekoči kristali;mehka snov;nematične lupine;koloidni delci;magistrska dela;
Tekoči kristali omogočajo številne vizualizacije geometrijskih zakonitosti. V magistrski nalogi bomo s pomočjo dvodimenzionalnega Landau-de Gennes tenzorskega formalizma proučevali topološke defekte v nematičnih lupinah. Slednje predstavljajo tanko plast nematičnih tekočih kristalov, nanesenih na po ...
Leto:
2013
Vir:
Fakulteta za naravoslovje in matematiko (UM FNM)
Doktorska disertacija
Oznake:
dissertations;topological defects;continuum fields;nematic liquid crystals;biological membranes;nematic shells;Landau-de Gennes formalism;topological charge;nanoparticles;Gaussian curvature;electrostatic analogy;intrinsic curvature;extrinsic curvature;crystal growth nucleation;relative volume;
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:
2018
Vir:
Fakulteta za naravoslovje in matematiko (UM FNM)
Objavljeni znanstveni prispevek na konferenci (vabljeno predavanje)
Oznake:
topološki defekti;tekoči kristali;distorzije;Gaussova ukrivljenost;prolatne lupine;topological defects;liquid crystals;distortions;Gaussian curvature;prolate shells;
Leto:
2023
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:
topološki defekti;nematski tekoči kristali;Gaussova ukrivljenost;topološki naboj;ne zaključna dela;topological defects;nematic liquid crystals;Gaussian curvature;topological charge;
We considered general mechanisms enabling the stabilization of localized assemblies of topological defects (TDs). There is growing evidence that physical fields represent fundamental natural entities, and therefore these features are of interest to all branches of physics. In general, cores of TDs a ...
Leto:
2023
Vir:
Fakulteta za naravoslovje in matematiko (UM FNM)
Pregledni znanstveni članek
Oznake:
citoskelet;membranski skelet;oblika celic;orientacijski red;aktinski filamenti;aktivna sila;BAR domene;anizotropna oblika molekul;Motorne domene NMIIA;brstenje membran;cytoskeleton;membrane skeleton;cell shape;orientational ordering;actin filaments;active force;BAR domains;anisotropic shape of molecules;NMIIA motor domains;membrane budding;
Biological membranes are composed of isotropic and anisotropic curved nanodomains. Anisotropic membrane components, such as Bin/Amphiphysin/Rvs (BAR) superfamily protein domains, could trigger/facilitate the growth of membrane tubular protrusions, while isotropic curved nanodomains may induce undula ...
Leto:
2021
Vir:
Fakulteta za elektrotehniko (UL FE)
Izvirni znanstveni članek
Oznake:
cepitev veziklov;električni dvojni sloj;osmotski tlak;orientacijska urejenost vodnih dipolov;topološki defekti;fission of vesicles;electric double layer;osmotic pressure;orientational ordering of water dipoles;topological defects;
Within a modified Langevin Poisson–Boltzmann model of electric double layers, we derived an analytical expression for osmotic pressure between two charged surfaces. The orientational ordering of the water dipoles as well as the space dependencies of electric potentials, electric fields, and osmotic ...
Leto:
2021
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:
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 o ...
Leto:
2021
Vir:
Fakulteta za naravoslovje in matematiko (UM FNM)