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Št. zadetkov: 5
Tok svetlobe skozi nematsko strukturo dvojno zvitega cilindra
Jaka Pišljar, Miha Ravnik
Magistrsko delo
Oznake: optika;fotonika;dvolomnost;nematski tekoči kristali;numerične metode;lečenje;valovodi;modre faze;
Tok svetlobe skozi nematsko strukturo dvojno zvitega cilindra
Leto: 2017 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Lensing and waveguiding in birefringent double-twist cylinders demonstrated using FDTD simulations
Jaka Pišljar, Miha Ravnik
Izvirni znanstveni članek
Oznake: optika;fotonika;dvolomnost;nematski tekoči kristali;lečenje;valovodi;optics;photonics;birefringence;nematic liquid crystals;lensing;waveguiding;
We demonstrate that birefringent profiles of double-twist cylinders, found in some chiral nematic systems such as blue phases, can perform as polarization-selective microlenses and waveguides in the regime of negative birefringence. Specifically, we solve Maxwell’s equations using the finite-differe ...
Leto: 2018 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Static and dynamic properties of half-skyrmion lattices in thin layers of chiral nematic liquid crystals
Jaka Pišljar, Igor Muševič
Doktorska disertacija
Oznake: liquid crystals;skyrmions;half-skyrmions;blue phases;chirality;
Skyrmions are nonsingular, vortex-like formations, emerging in some continuous fields, that are topologically protected by their twisted structure, which also offers them energetic stability. They have been observed in a number of condensed matter systems including liquid crystals (LCs). In highly c ...
Leto: 2023 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)
Skyrmions in blue phases of chiral liquid crystals
Jaka Pišljar, Matevž Marinčič, Sharmistha Ghosh, Srikanth Turlapati, Nandiraju V. S. Rao, Andriy Nych, Miha Škarabot, Alenka Mertelj, Andrej Petelin, Anja Bregar, Miha Ravnik, Igor Muševič
Izvirni znanstveni članek
Oznake: tekoči kristali;kiralni nematiki;modre faze;skirmioni;liquid crystals;chiral nematics;blue phases;skyrmions;
Using high-resolution microscope observations, we show that both the static cubic (BPI) and the dynamic amorphous (BPIII) blue phases consist of fractional skyrmion filaments that transform into the same quasi two-dimensional structure of ‘baby’ half-skyrmions upon confinement to ultra-thin layers. ...
Leto: 2023 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 5
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