421 citations · 686 across the 11 of their papers we have counts for
11 papers
Active rejection-enhancement of spectrally adaptive liquid crystal geometric phase vortex coronagraphs
N. Kravets, U. Mur, M. Ravnik +2
Geometric phase optical elements made of space-variant anisotropic media customarily find their optimal operating conditions when the half-wave retardance condition is fulfilled, w…
Topology of three-dimensional active nematic turbulence confined to droplets
Simon Čopar, Jure Aplinc, Žiga Kos +2
Active nematics contain topological defects which under sufficient activity move, create and annihilate in a chaotic quasi-steady state, called active turbulence. However, understa…
A mesh adaptivity scheme on the Landau-de Gennes functional minimization case in 3D, and its driving efficiency
Iztok Bajc, Frédéric Hecht, Slobodan Žumer
This paper presents a 3D mesh adaptivity strategy on unstructured tetrahedral meshes by a posteriori error estimates based on metrics, studied on the case of a nonlinear finite ele…
Generation of vector beams with liquid crystal disclination lines
Miha Čančula, Miha Ravnik, Slobodan Žumer
We report that guiding light beams, ranging from continuous beams to femtosecond pulses, along liquid crystal defect lines can transform them into vector beams with various polariz…
Singular Values, Nematic Disclinations, and Emergent Biaxiality
Simon Čopar, Mark R. Dennis, Randall D. Kamien +1
Both uniaxial and biaxial nematic liquid crystals are defined by orientational ordering of their building blocks. While uniaxial nematics only orient the long molecular axis, biaxi…
Quaternions and hybrid nematic disclinations
Simon Čopar, Slobodan Žumer
Disclination lines in nematic liquid crystals can exist in different geometric conformations, characterised by their director profile. In certain confined, colloidal and even more…