Published in Frontiers in Physics
Polarisation states are described by spin expectation values, known as Stokes parameters, the trajectories of which in a rotationally symmetric system form a sphere named after Poincaré. Here, we show that the trajectories of broken rotational symmetric systems can exhibit distinct topological structures in polarisation states. We use a phase-shift...
In light of global warming, it is essential to increase the energy efficiency of buildings and mitigate the adverse effects of rising temperatures on building users. Solar-induced energy flows are a significant, often even dominant, component of the building's energy balance, having a crucial impact on the cooling and heating energy demand as well ...
Published in Frontiers in Physics
The speed of light (c) in a vacuum is independent of the choice of frames to describe the propagation, according to the theory of relativity. We consider how light is characterised in a material, where the speed of light is different from that in a vacuum due to the finite dielectric constant. The phase velocity in a material is smaller than c, suc...
Many Australians believe the nation is more politically polarised and divided today than in the past. It’s a divide that has long plagued the United States, but new data show it is increasingly eroding nations’ unity, shared goals, and wellbeing all over the world, including in Australia.
Our research suggests the spread of misinformation on social ...
Published in Frontiers in Physics
Spin angular momentum of a photon corresponds to a polarisation degree of freedom of lights, and such that various polarisation properties are coming from macroscopic manifestation of quantum-mechanical properties of lights. An orbital degree of freedom of lights is also manipulated to form a vortex of lights with orbital angular momentum, which is...
Over the past decade radio astronomy has grown considerably. Next-generation radio telescopes have pushed the boundaries of what is possible scientifically. Furthermore, the advent of broadband polarisation measurements with modern radio telescopes have enabled the investigation of the origin and evolution of magnetic fields using the RM Synthesis ...
V zaključni nalogi magistrskega izobraževanja so predstavljeni ključni gradniki in tehnologije za prenos signalov radijskih postaj do končnih uporabnikov. Bistvo naloge so radijske komunikacije, ki omogočajo prenos prizemnih radijskih signalov preko radijskega omrežja do končnih uporabnikov. Uporabniki radijskih sprejemnikov danes za sprejem radijs...
Published in Frontiers in Physics
Lie algebra is a hidden mathematical structure behind various quantum systems realised in nature. Here, we consider SU(2) wavefunctions for polarisation states of coherent photons emitted from a laser source, and discuss the relationship to spin expectation values with SO(3) symmetry based on isomorphism theorems. In particular, we found rotated ha...
Published in Journal of microscopy
Polarised nonlinear microscopy has been extensively developed to study molecular organisation in biological tissues, quantifying the response of nonlinear signals to a varying incident linear polarisation. Polarisation Second harmonic Generation (PSHG) in particular is a powerful tool to decipher sub-microscopic modifications of fibrillar collagen ...
Un vaste corpus de recherche en sciences cognitives a montré que les personnes sélectionnent la crédibilité de l’information en fonction de sa source plutôt que de son contenu. Les tendances des gens à faire confiance à différents récits et comportements prescrits sur des sujets aussi divisifs que les vaccins, les mesures de santé publique, la cris...
