A5021703490- Topological Materials and Phenomena
- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Mechanical and Optical Resonators
- Nonlinear Photonic Systems
- Quantum Mechanics and Non-Hermitian Physics
- Speech and Audio Processing
- Graphene research and applications
- Photonic Crystals and Applications
- Thermal Radiation and Cooling Technologies
- Random lasers and scattering media
- Adhesion, Friction, and Surface Interactions
- Plasmonic and Surface Plasmon Research
- Music Technology and Sound Studies
- Terahertz technology and applications
- Seismic Waves and Analysis
- Quantum and electron transport phenomena
- Aerodynamics and Acoustics in Jet Flows
- Stellar, planetary, and galactic studies
- Inorganic Fluorides and Related Compounds
- Pigment Synthesis and Properties
- Quantum many-body systems
- Granular flow and fluidized beds
- Cultural Heritage Materials Analysis
- Transition Metal Oxide Nanomaterials
Sun Yat-sen University
2022-2025
Tianjin University of Traditional Chinese Medicine
2025
Universidad Carlos III de Madrid
2020-2024
Laboratoire d'Acoustique de l'Université du Mans
2015-2024
Centre National de la Recherche Scientifique
2016-2024
Institut des Molécules et Matériaux du Mans
2024
Le Mans Université
2015-2023
Nanjing University of Information Science and Technology
2023
Northwestern University
2023
Jinan University
2022
It has been regarded as an essential treatment option for diabetic nephropathy (DN) in Traditional Chinese medicine. Previous studies have demonstrated the anti-DN efficacy of Schisandra chinensis Fruit Mixture (SM); however, a comprehensive chemical fingerprint is still uncertain, and its mechanism action, especially potential therapeutic targets anti-DN, needs to be further elucidated. Potential mechanisms SM action on DN were explored through network pharmacology experimental validation....
Zero-refractive-index materials may lead to promising applications in various fields. Here, we design and fabricate a near Zero-Refractive-Index (ZRI) material using phononic crystal (PC) composed of square array densely packed iron rods air. The dispersion relation exhibits nearly flat band across the Brillouin zone at reduced frequency f = 0.5443c/a, which is due Fabry-Perot (FP) resonance. By retrieval method, find that both effective mass density reciprocal bulk modulus are close zero...
Artificial honeycomb lattices with Dirac cone dispersion provide a macroscopic platform to study the massless quasiparticles and their novel geometric phases. In this paper, quadruple-degenerate state is achieved at center of Brillouin zone in two-dimensional lattice phononic crystal, which result accidental degeneracy two double-degenerate states. vicinity state, relation linear. Such quadruple analyzed by rigorous representation theory groups. Using method, reduced Hamiltonian obtained...
We numerically realize the acoustic rainbow trapping effect by tapping an air waveguide with space-coiling metamaterials. Due to high refractive-index of metamaterials, our device is more compact compared reported trapped-rainbow devices. A numerical model utilizing effective parameters also calculated, whose results are consistent well direct simulation structure. Moreover, such capability dropping different frequency components a broadband incident temporal signal into channels can...
Dirac cones are essential features of the electronic band structure materials like graphene and topological insulators (TIs). Lately, this avenue has found a growing interest in classical wave physics by using engineered artificial lattices. Here, we demonstrate an acoustic 3D honeycomb lattice that hierarchy comprising eightfold bulk cone, 2D fourfold surface state 1D twofold hinge cone. The lifting degeneracy each authorizes to appear as first-order TI with states, second-order exhibiting...
Topological physics strongly relies on prototypical lattice model with particular symmetries. We report here a theoretical and experimental work acoustic waveguides that is directly mapped to the one-dimensional Su-Schrieffer-Heeger chiral model. Starting from continuous two dimensional wave equation we use combination of monomadal approximation condition equal length tube segments arrive at wanted discrete equations. It shown open or closed boundary conditions topological leads...
Abstract Researches on Airy beams have grown explosively since the first demonstration in 2007 due to distinguishing properties of nondiffraction, transverse acceleration and self-healing. To date, a simple compact approach for generating high quality efficiency has remained challenging. Here, we propose demonstrate liquid crystal (LC) polarization mask (PAM) featured by spatially variant LC azimuthal director. The PAM is fabricated through photoaligning via polarization-sensitive alignment...
In this work, we experimentally report the acoustic realization two-dimensional (2D) Su-Schrieffer-Heeger (SSH) model in a simple network of air channels. We analytically study steady state dynamics system using set discrete equations for pressure, leading to 2D SSH Hamiltonian matrix without tight binding approximation. By building an operating audible regime, demonstrate existence topological band gap. More supremely, within gap observe associated edge waves even though is open free space....
Abstract One of the hallmark topological insulators is having conductivity properties that are unaffected by possible presence defects. In this work, going beyond backscattering immunity and invisibility across defects or disorder obtained. Using a combination chiral mirror symmetry, transmission coefficient guaranteed to be unity. Importantly, but no phase shift induced making defect completely invisible. Many lattices possess chiral‐mirror principle chosen demonstrated on an hexagonal...
Topological insulators remain steadfast at the forefront of condensed matter physics due to their unique electronic properties. The well-known bulk-boundary correspondence ensures existence robust edge or interface states, which are protected by topological characteristics material's bulk band structure. Moving beyond bound states traditionally emphasized in literature, we explore how topologically extend nontrivial radiation away from confining interfaces. Here, design a metamaterial whose...
Granular crystals are periodic structures of elastic beads arranged in crystal lattices. One important feature granular is that the interactions between can take place via noncentral contact forces, leading to propagation rotational and coupled rotational-translational waves. Here, we theoretically demonstrate topological properties these mechanical waves a graphene, two-dimensional monolayer honeycomb with Dirac dispersion at center Brillouin zone. Around point, effective spin, helicity,...
In this work, acoustic phase-reconstruction is studied and experimentally demonstrated in a triangular lattice two-dimensional phononic crystal (PnC) composed of steel rods air. Owning to the fact that two bands PnC touch at K/K′ point thus give rise conical Dirac cone, waves transmitting through can exhibit pseudo-diffusion transportation feature, producing reconstructed planar wavefront far field away from interface PnC. Such phase reconstruction effect be utilized many applications, here...
Abstract Recent emerge of dielectric nanoparticle chains featuring subwavelength topological states has opened unprecedented avenues for light. 
Here, we demonstrate a mechanical analogy zigzag chain that supports vibrational and rotational localizations in the form edge at extremely low frequency (near zero). We elaborate analytical methodology to thoroughly analyze wave dynamics near zero-frequency regime. 
Due weak couplings, find motion can be efficiently confined on...
Here, we experimentally investigate the topological state properties in an acoustic trimer waveguide akin to extended Su–Schrieffer–Heeger model. By integrating a mirror symmetry into structure, are able observe existence of two pairs chiral edge states due hidden even though original structure itself does not exhibit chirality. We uncover and unearth topology for origin using winding number subspace Hamiltonian. The measured dispersion localization sound on edges verify observations theory...
Abstract In this work, we study the propagation of sound waves in a honeycomb waveguide network loaded with Helmholtz resonators (HRs). By using plane wave approximation each obtain first-principle modeling network, which is an exact mapping to graphene tight-binding Hamiltonian. We show that additional Dirac points appear band diagram when HRs are introduced at nodes. It allows break inversion (sub-lattice) symmetry by tuning resonators, leading appearence edge modes reflect configuration...
The development of virtual reality (VR) has exerted an enormous impact on higher education. However, the VR application in dental education is still at early stage China. This study explored usability a training practical skills students.We first utilized "system scale" (SUS) to verify validity this study. Next, orthodontic bracket bonding was experienced by participants. subsequent survey delivered collect participants' perception and evaluation system prospective dentists.The SUS score...
Abstract Vertically stacked multiple atomically thin layers have recently widened the landscape of rich optical structures thanks to these quantum metamaterials or van der Waals (vdW) materials, featuring hyperbolic polaritons with unprecedented avenues for light. Despite their far‐reaching implications, most properties rest entirely on a trivial band topological origin. Here, 2D approach is adopted toward micromechanical vdW analogue that, as result engineered chiral and mirror symmetries,...
Band structure and Dirac degeneracy are essential features of sonic crystals/acoustic metamaterials to achieve advanced control exciting wave effects. In this work, we explore a deep learning approach for the design phononic crystals with desired dispersion. A plane expansion method is utilized establish dataset relation between structural parameters energy band features. Subsequently, multilayer perceptron model trained using can yield accurate predictions behavior. Based on model, further...
The existence of surface elastic waves at a mechanically free granular phononic crystals is studied. are made spherical particles distributed periodically on simple cubic lattice. It assumed that the interacting by means normal, shear, and bending contact rigidities. First, Rayleigh-type acoustic waves, where displacement takes place in sagittal plane while possess one rotational two translational degrees freedom, analyzed. Second, shear-horizontal-type normal to freedom zero-group-velocity...
In recent years, topology has offered an elegant degree of freedom (DOF) for light and sound manipulation. There exists persistent effort to explore the origin topological phases based on symmetry, while it becomes rather challenging in complex networks or multiple DOF systems where geometric symmetries are not apparent. Here, we demonstrate a linear degeneracy induced by latent mirror symmetry zigzag granular chain whose is three times larger than its bead number. An isospectral reduction...