1.4k citations · 3.3k across the 23 of their papers we have counts for
23 papers
Mode-selective Single-dipole Excitation and Controlled Routing of Guided Waves in a Multi-mode Topological Waveguide
Yandong Li, Yang Yu, Kueifu Lai +4
Topology-linked binary degrees of freedom of guided waves have been used to expand the channel capacity of and to ensure robust transmission through photonic waveguides. However, s…
Chiral plasmons with twisted atomic bilayers
Xiao Lin, Zifei Liu, Tobias Stauber +5
Van der Waals heterostructures of atomically thin layers with rotational misalignments, such as twisted bilayer graphene, feature interesting structural moiré superlattices. Due to…
Realization of an acoustic third-order topological insulator
Haoran Xue, Yahui Yang, Guigeng Liu +3
The recent discovery of higher-order topological insulators (TIs) has opened new possibilities in the search for novel topological materials and metamaterials. Second-order TIs hav…
Spin-valley-controlled photonic topological insulator
Haoran Xue, Fei Gao, Yang Yu +3
The discovery of photonic topological insulators (PTIs) has opened the door to fundamentally new topological states of light.Current time-reversal-invariant PTIs emulate either the…
Acoustic higher-order topological insulator on a Kagome lattice
Haoran Xue, Yahui Yang, Fei Gao +2
High-order topological insulators (TIs) are a family of recently-predicted topological phases of matter obeying an extended topological bulk-boundary correspondence principle. For…
Superlight inverse Doppler effect
Xihang Shi, Xiao Lin, Ido Kaminer +5
There is a century-old tenet [1, 2] that the inverse Doppler frequency shift of light [3-13] is impossible in homogeneous systems with a positive refractive index. Here we break th…
Sorting and Routing Topologically Protected Edge States by their Valleys
Kueifu Lai, Yang Yu, Yuchen Han +3
We experimentally demonstrate and characterize a photonic platform containing heterogeneous topological phases. This platform is shown to support valley-spin locked edge states tha…
Topologically-protected refraction of robust kink states in valley photonic crystals
Fei Gao, Haoran Xue, Zhaoju Yang +6
Recently discovered valley photonic crystals (VPCs) mimic many of the unusual properties of two-dimensional gapped valleytronic materials such as bilayer graphene or MoS2. Of the u…
Translation and Rotation of Transformation Media under Electromagnetic Pulse
Fei Gao, Xihang Shi, Xiao Lin +2
It is well known that optical media create artificial geometry for light, and curved geometry acts as an effective optical medium. This correspondence originates from the form inva…
Invisibility Dips of Near-Field Energy Transport in a Spoof Plasmonic Metadimer
Fei Gao, Zhen Gao, Yu Luo +1
Invisibility dips, minima in scattering spectrum associated with asymmetric Fano-like line-shapes, have been predicted with transformation optics in studying strong coupling betwee…
Spoof surface plasmon Fabry-Perot open resonators in a surface-wave photonic crystal
Zhen Gao, Fei Gao, Hongyi Xu +2
We report on the proposal and experimental realization of a spoof surface plasmon Fabry-Perot (FP) open resonator in a surface-wave photonic crystal. This surface-wave FP open reso…
Tunable band-notched line-defect waveguide in a surface-wave photonic crystal
Zhen Gao, Fei Gao, Youming Zhang +2
We propose and experimentally demonstrate a tunable band-notched line-defect waveguide in a surface-wave photonic crystal, which consists of a straight line-defect waveguide and si…
Sign-Reversal Coupling in Coupled-Resonator Optical Waveguide
Zhen Gao, Fei Gao, Youming Zhang +1
Coupled-resonator optical waveguides (CROWs), which play a significant role in modern photonics, achieve waveguiding through near-field coupling between tightly localized resonator…
Guiding, bending, and splitting of coupled defect surface modes in a surface-wave photonic crystal
Zhen Gao, Fei Gao, Baile Zhang
We experimentally demonstrate a type of waveguiding mechanism for coupled surface-wave defect modes in a surface-wave photonic crystal. Unlike conventional spoof surface plasmon wa…
Deep-subwavelength magnetic-coupling-dominant stereometamaterials
Zhen Gao, Fei Gao, Youming Zhang +1
Here, we experimentally demonstrate that a stack of metallic spiral structures (MSSs) can have dominant magnetic coupling in both of its two configurations. This allows magnetic-co…
Complementary magnetic localized surface plasmons
Zhen Gao, Fei Gao, Youming Zhang +1
Magnetic localized surface plasmons (LSPs) supported on metallic structures corrugated by very long and curved grooves have been recently proposed and demonstrated on an extremely…
Vertical Transport of Subwavelength Localized Surface Electromagnetic Modes
Fei Gao, Zhen Gao, Youming Zhang +3
Transport of subwavelength electromagnetic (EM) energy has been achieved through near-field coupling of highly confined surface EM modes supported by plasmonic nanoparticles, in a…
Dynamical Mechanism of Two-Dimensional Plasmon Launching by Swift Electrons
Xiao Lin, Xihang Shi, Fei Gao +8
Launching of surface plasmons by swift electrons has long been utilized in electron-energy-loss spectroscopy (EELS) to investigate plasmonic properties of ultrathin, or two-dimensi…
Caustic graphene plasmons with Kelvin angle
Xihang Shi, Xiao Lin, Fei Gao +3
A century-long argument made by Lord Kelvin that all swimming objects have an effective Mach number of 3, corresponding to the Kelvin angle of 19.5 degree for ship waves, has been…
Probing topological protection using a designer surface plasmon structure
Fei Gao, Zhen Gao, Xihang Shi +9
Topological photonic states, inspired by robust chiral edge states in topological insulators, have recently been demonstrated in a few photonic systems, including an array of coupl…
Topological water wave state in a one-dimensional structure
Zhaoju Yang, Fei Gao, Baile Zhang
Topological concepts have been introduced into electronic, photonic, and phononic systems, but have not been studied in surface-water-wave systems. Here we study a one-dimensional…
Topological Acoustics
Zhaoju Yang, Fei Gao, Xihang Shi +4
The manipulation of acoustic wave propagation in fluids has numerous applications, including some in everyday life. Acoustic technologies frequently develop in tandem with optics,…
Experimental demonstration of an ultra-thin three-dimensional thermal cloak
Hongyi Xu, Xihang Shi, Fei Gao +2
We report the first experimental realization of a three-dimensional thermal cloak shielding an air bubble in a bulk metal without disturbing external thermal flux. The cloak is mad…