A5061655802- Topological Materials and Phenomena
- Blind Source Separation Techniques
- Ferroelectric and Negative Capacitance Devices
- Graphene research and applications
- Advanced Condensed Matter Physics
- Photorefractive and Nonlinear Optics
- High-pressure geophysics and materials
- Quantum many-body systems
- Seismic Imaging and Inversion Techniques
- Underwater Acoustics Research
Kunming University
2023-2025
China University of Petroleum, Beijing
2014
In recent years, higher-order sonic topological insulators have transformed our understanding of how waves are trapped, and led to the discovery unique edge corner states resistant small perturbations. Programmable coding a insulator realizes logic or xor gates. Despite rapid advancements in this field, it has been significant challenge achieve programmable binary codes waves. We propose solution challenge, based on states. Using parity phase difference two sources, we can realize...
As a quantum state of frequency extrema in the momentum space acoustic systems, sonic valley pseudospin provides new degree freedom for controlling waves. Higher-order topological insulators (HOTIs) have extended traditional bulk-edge correspondence principle and are crucial concept classic wave regulation. However, HOTIs crystals (VSCs) only appear single bandgap, which limits multi-frequency selectivity corner is not conducive to design communication devices. Here, we demonstrate...
Summary Acoustic reflection well logging takes leaky energy as incident waves, and probes acoustic fields reflected from near borehole fracture micro-structures. By analyzing the reflections received waveform signals, we can obtain structure information of nearby formations evaluate small subtle fractured reservoirs. Therefore method to effectively extract waves is great importance plays a decisive role in precisely delineating reflectors borehole. But complicated conditions severely hinder...
Recently, researchers have devoted their intense efforts to investigating Weyl physics in synthetic space. In this Letter, we study the intriguing topological rotated a three-dimensional parameter space, which consists of two extra structural parameters and wave vector simple one-dimensional sonic crystal. our ultrasonic experiments, observe that interface states propagate along formed by crystals distinct chirality caused points. We detect points measure singularities reflection phase,...