研究方向1:经典物理体系中拓扑相变和对称性
(1)拓扑声学
基于人工结构中对称性调控和新型自由度引入,从机理和实验等方面探索声学体系中量子物态的演化,如绝热通道、非互易传输和拓扑相变等新奇现象。
Demonstration of Acoustic Higher-Order Topological Stiefel-Whitney Semimetal. Phys. Rev. Lett. 132, 197202.
Acoustic Higher-Order Topological Insulators Induced by Orbital-Interactions. Adv. Mater. 2024, 2312421.
Robust temporal adiabatic passage with perfect frequency conversion between detuned acoustic cavities. Nat. Commun. 15, 1478 (2024).
Orbital topological edge states and phase transitions in one-dimensional acoustic resonator chains. Nat. Commun. 14,8162 (2023).
Efficient nonreciprocal mode transitions in spatiotemporally modulated acoustic metamaterials. Sci. Adv. 2021, 7, eabj1198.
One-way Localized Adiabatic Passage in an Acoustic System. Phys. Rev. Lett. 2019, 122(9), 094501.
Experimental demonstration of acoustic Chern insulators. Phys. Rev. Lett. 2019, 014302.
Unidirectional wave vector manipulation in two-dimensional space with an all passive acoustic parity-time-symmetric metamaterials crystal. Phys. Rev. Lett. 2018, 120(12), 124502.
Experimental demonstration of anomalous Floquet topological insulator for sound. Nat. Commun. 2016, 7, 13368.
PT -Symmetric Acoustics. Phys. Rev. X 2014, 4, 031042.
Acoustic cloaking by a superlens with single-negative materials. Phys. Rev. Lett. 2011, 106(1), 014301.
(2)基于对称性调控的热扩散研究
基于扩散体系的虚耦合,构建(反)时间-宇称对称性体系,观测对称性破缺前后热传输区别。类比量子体系能带论,探索热扩散体系的拓扑物理。
Observation of parity-time symmetry in diffusive systems. Sci. Adv. 2024,13, 65.
Observation of non-Hermitian skin effect in thermal diffusion. Sci. Bull. 2024, 2095-9273.
Reciprocity of thermal diffusion in time-modulated systems. Nat. Commun. 2022,13, 167.
3D Printed Meta‐Helmet for Wide‐Angle Thermal Camouflages. Adv. Funct. Mater. 2020, 30(28), 2002061.
Anti-parity-time symmetry in diffusive systems. Science 2019, 364(6436), 170-173.
Thermal meta-device in analogue of zero-index photonics. Nat. Mater. 2019, 18(1), 48-54.