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Localized modes in random arrays of cylinders
1Laboratoire de Physique de la Matière Condensée, CNRS UMR 6622, Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 02, France.
Summary
Anderson localization of classical waves is enhanced by identical resonant scatterers. Polydispersed scatterers increase the localization length, offering insights into wave propagation in disordered systems.
Area of Science:
- Physics
- Wave phenomena
- Condensed matter physics
Background:
- Anderson localization describes the absence of diffusion and the exponential decay of wave functions in disordered systems.
- Classical wave localization in random dielectric structures is crucial for understanding wave transport in various media.
Purpose of the Study:
- To numerically investigate Anderson localization of classical waves in random dielectric cylinder arrays.
- To analyze the impact of scatterer diameter distribution on wave localization and localization length.
Main Methods:
- Numerical simulations were employed to study wave propagation.
- The study focused on random arrays of dielectric cylinders with varying diameter distributions.
Main Results:
- Using identical resonant scatterers promotes Anderson localization.
- Employing polydispersed resonant scatterers increases the localization length.
- The findings are linked to proximity resonance effects observed with fewer scatterers.
Conclusions:
- The distribution of scatterer sizes significantly influences classical wave localization.
- Identical scatterers are more effective for achieving Anderson localization, while polydispersity affects localization length, offering tunable wave control.