Localized and delocalized topological modes of heat
成果类型：
Article
署名作者：
Li, Jiaxin; Xu, Chengxin; Xu, Zifu; Xu, Guoqiang; Yang, Shuihua; Liu, Kaipeng; Chen, Jianfeng; Li, Tianlong; Qiu, Cheng - Wei
署名单位：
National University of Singapore; Harbin Institute of Technology
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-13912
DOI：
10.1073/pnas.2408843121
发表日期：
2024-08-27
关键词：
摘要：
The topological physics has sparked intensive investigations into topological lattices in photonic, acoustic, and mechanical systems, powering counterintuitive effects otherwise inaccessible with usual settings. Following the success of these endeavors in classical wave dynamics, there has been a growing interest in establishing their topological counterparts in diffusion. Here, we propose an additional real- space dimension in diffusion, and the system eigenvalues are transformed from imaginary to real. By judiciously tailoring the effective Hamiltonian with coupling networks, localized and delocalized topological modes are realized in heat transfer. Simulations and experiments in active thermal lattices validate the effectiveness of the proposed theoretical strategy. This approach can be applied to establish various topological lattices in diffusion systems, offering insights into engineering topologically protected edge states in dynamic diffusive scenarios.