A5045664895- Quantum Mechanics and Non-Hermitian Physics
- Thermal Radiation and Cooling Technologies
- Nonlinear Photonic Systems
- Characterization and Applications of Magnetic Nanoparticles
- Advanced NMR Techniques and Applications
- Nonlinear Waves and Solitons
- NMR spectroscopy and applications
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Building Energy and Comfort Optimization
- Photonic Crystals and Applications
- Urban Heat Island Mitigation
- Structural Engineering and Vibration Analysis
- Metamaterials and Metasurfaces Applications
University of Mons
2021-2025
Material (Belgium)
2025
Parity-time $(\mathcal{PT})$ symmetry and chirality are both actively investigated in photonics due to the original behaviors they provide. We combine $\mathcal{PT}$ a single photonic structure by inserting chiral material narrow gap between $\mathcal{PT}$-symmetric coupled waveguides. analyze various effects of coupling modes, especially vicinity an exceptional point. By tuning waveguide we tailor non-Hermitian modes with different polarizations, which would otherwise not interact. As...
Iron oxide superparamagnetic nanoparticles have been extensively studied as T2 contrast agents in magnetic resonance imaging. The theory of nuclear relaxation induced by has validated numerous experimental studies the case spherical particles. Recently, several focused on synthesis cubic nanoparticles. Some them reported significantly higher relaxivities compared to their counterpart and attributed this increase specific shapes. This work investigates impact cube-shaped through Monte Carlo...
Some like it hot (but others do not): Photonic engineered textiles are of significant interest for personal thermal regulation, as they can keep a person comfortable over large temperature range, and provide the potential substantial energy savings. However, yarn- or fiber-based dual-mode designs that both cooling heating functionalities have been absent. By staggering metallic dielectric fibers within yarn, authors propose an effective double-sided textile to achieve emissivity contrast...
Photonic structures offer a flexible platform for studying and demonstrating parity-time ($\mathcal{PT}$) symmetry phenomena. In these platforms, electric dipoles are often used as accurate models electromagnetic sources, elliptical were shown to provide directional mode excitation. Here we introduce tailored dipole sources excitation in $\mathcal{PT}$-symmetric structure made of two coupled waveguides. By eliminating one the device, qualitatively different wave propagation on sides is...
In non-Hermitian systems, particularly those adhering to $\mathcal{PT}$ symmetry, exceptional points (EPs) are critical junctures wherein eigenvalues and eigenvectors coalesce. These induce the convergence of eigenmodes in waveguiding resulting unique dispersion features remarkable effects such as slow light. a configuration comprising two coupled waveguides, EPs can be achieved via mechanisms involving balanced gain-loss modulation or contradirectional modal interference. By leveraging...
Personal radiative heat regulation by photonic engineered textiles can help contribute to a more sustainable cooling and heating energy consumption in buildings expanding the range of comfortable ambient conditions. Here, we propose various dual-mode fabric designs (dynamic static) that provide thermal both cold hot environments. In first design, utilize metal-coated monofilaments arranged hexagonal geometry within yarn stimuli-responsive polymer actuator beads, this way benefiting from...