期刊
NANOPHOTONICS
卷 10, 期 18, 页码 4523-4531出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2021-0433
关键词
higher-order topological insulator; symmetry-indicator; topological crystalline insulator; topological insulator; topology optimization
资金
- National Natural Science Foundation [11821202, 11732004, 12002073, 12002077, 11922204, 11872141]
- National Key Research and Development Plan [2020YFB1709401]
- Fundamental Research Funds for the Central Universities [DUT20RC(3)020, DUT21RC(3)076]
- Dalian Talent Innovation Program [2020RQ099]
- Liaoning Revitalization Talents Program [XLYC1907119]
- Doctoral Scientific Research Foundation of Liaoning Province [2021-BS-063]
- 111 Project [B14013]
An explicit topology optimization-based design paradigm is proposed for the design of photonic topological crystalline insulators (TCIs), which is successfully applied to design photonic TCIs with time-reversal symmetry in two-dimensional point groups, higher-order magnetic TCIs, and higher-order photonic TCIs. This methodology paves the way for inverse design of optimized photonic/phononic, multiphysics, and multifunctional three-dimensional TCIs.
An explicit topology optimization-based design paradigm is proposed for the design of photonic topological crystalline insulators (TCIs). To strictly guarantee the topological property, rational engineering of symmetry-indicators is carried out by mathematical programming, which simultaneously maximizes the width of nontrivial topological band gaps and achieves the desired quantized bulk polarization. Our approach is successfully applied to design photonic TCIs with time-reversal symmetry in two-dimensional point groups, higher-order magnetic TCIs, and higher-order photonic TCIs. This methodology paves the way for inverse design of optimized photonic/phononic, multiphysics, and multifunctional three-dimensional TCIs.
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