Engineering and Technology

Selectable diffusion direction with topologically protected edge modes

K. Funayama, J. Hirotani, et al.

This innovative research, conducted by Keita Funayama, Jun Hirotani, Atsushi Miura, and Hiroya Tanaka, explores thermal diffusion direction through topologically protected edge modes in a honeycomb structure. By manipulating effective diffusivities, a robust thermal polarization is achieved, ensuring consistent heat balance even in the presence of defects.

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Abstract

This paper demonstrates the selection of thermal diffusion direction using topologically protected edge modes in a honeycomb-shaped structure. By adjusting the ratio of effective diffusivities, a topological phase transition is controlled, creating edge modes that induce thermal polarization. Numerical and analytical studies show that the temperature corresponding to these edge modes provides directional heat balance, making the system robust to defects.

Publisher

Communications Physics

Published On

Dec 20, 2023

Authors

Keita Funayama, Jun Hirotani, Atsushi Miura, Hiroya Tanaka