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Št. zadetkov: 5
Določanje elastičnih konstant nematskega tekočega kristala z uporabo nevronskih mrež
Jaka Zaplotnik, Miha Ravnik
Magistrsko delo
Oznake: strojno učenje;nematski tekoči kristali;nevronske mreže;elastične konstante;Frank-Oseenova prosta energija;numerične simulacije;optika;
Tri elastične konstante, ki pripadajo trem osnovnim deformacijam orientacijske ureditve molekul nematskega tekočega kristala (pahljačasti, zvojni in upogibni), določajo ravnovesno ureditev in relaksacijsko dinamiko iz neravnovesnega stanja. V magistrskem delu razvijemo novo metodo določanja elastič ...
Leto: 2021 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Neural networks determination of material elastic constants and structures in nematic complex fluids
Jaka Zaplotnik, Jaka Pišljar, Miha Škarabot, Miha Ravnik
Izvirni znanstveni članek
Oznake: fizika kondenzirane snovi;nematski tekoči kristali;nevronske mreže;condensed matter physics;nematic liquid crystals;neural networks;
Supervised machine learning and artificial neural network approaches can allow for the determination of selected material parameters or structures from a measurable signal without knowing the exact mathematical relationship between them. Here, we demonstrate that material nematic elastic constants a ...
Leto: 2023 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Photonic defect modes in cholesteric liquid crystal resonators with embedded isotropic layers
Jaka Zaplotnik, Urban Mur, Igor Muševič, Miha Ravnik
Izvirni znanstveni članek
Oznake: optika;fotonika;tekoči kristali;optics;photonics;liquid crystals;
Photonic defect modes are explored as a viable alternative to standard photonic band edge modes in photonic crystal applications, especially due to their typically high Q-factors and local density of states. For example, they can be used in nonlinearity enhancement, lasing, and cavity quantum electr ...
Leto: 2024 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Whispering gallery mode study of phase transition and shape change in liquid crystal droplets
Arkalekha Neogi, Jaka Zaplotnik, Miha Ravnik, Igor Muševič
Izvirni znanstveni članek
Oznake: WGM spektroskopija;tekoči kristali;tekočekristalne kapljice;Whispering Gallery Mode spectroscopy;liquid crystals;liquid crystal droplets;
We demonstrate that the Whispering Gallery Mode (WGM) lasing spectroscopy is a versatile high resolution tool to study the structure of interfaces of liquid crystalline (LC) droplets immersed in an immiscible fluid, such as water. The eigenfrequencies of WGMs in spherical microcavities are very sens ...
Leto: 2026 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Photonic eigenmodes of 2D cylindrical cholesteric liquid crystal resonators
Urban Mur, Jaka Zaplotnik, Martin Horvat, Igor Muševič, Miha Ravnik
Izvirni znanstveni članek
Oznake: fotonika;holesterični tekoči kristali;optični resonatorji;lastni načini;photonics;cholesteric liquid crystals;optical resonators;optical eigenmodes;
Cholesteric liquid crystals (CLCs) are birefringent materials with a helical molecular orientation that enables the selective reflection of circularly polarized light, making them valuable for various optical applications. While extensively studied in planar geometries, their optical properties in c ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 5
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