Disentangling Enhanced Diffusion and Ballistic Motion of Excitons Coupled to Bloch Surface Waves with Molecular Dynamics Simulations.

ABSTRACT: Placing an organic material on top of a Bragg mirror can significantly enhance the exciton transport. Such enhancement has been attributed to strong coupling between the evanescent Bloch surface waves (BSW) on the mirror and the excitons in the material. In this regime, the BSW and excitons hybridize into Bloch surface wave polaritons (BSWP), new quasiparticles with both photonic and excitonic character. While recent experiments unveiled a mixed nature of the enhanced transport, the role of the material degrees of freedom in this process remains unclear. To clarify their role, we performed atomistic molecular dynamics simulations of an ensemble of methylene blue dye molecules strongly coupled to a BSW. The simulations reveal a correlation between the photonic content of the BSWP and the na

SUBMITTER: Sokolovskii I 

PROVIDER: S-EPMC12604612 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature