150 citations · 558 across the 16 of their papers we have counts for
16 papers
Non-Hermitian Skin Effect from Radiative Coupling in a Reciprocal Chiral Medium
Kin Hung Fung, Changhao Meng, Yixin Xiao +1
We show that long-range radiative coupling in a passive chiral medium produces an unusual non-Hermitian skin effect in a chain of dipoles. The skin-mode profile consists of a long-…
Integer-Graded Reciprocal Skin Effect from Internal Rotation
Kin Hung Fung, C. T. Chan
A prominent class of reciprocal non-Hermitian skin effects has a topological classification, characterized by a parity invariant protected by reciprocity. We show that con…
Scalar-Wave Dispersion in Vectorial Photonic Crystals via Site-Adapted p Orbitals
Yan-Long Chen, Kin Hung Fung, C. T. Chan +1
Electromagnetic waves are intrinsically vectorial and require description via polarization, unlike scalar fields such as acoustic pressure or electronic wavefunctions. In three dim…
Exact flat bands in a 3D photonic crystal
Kin Hung Fung, Yan-Long Chen, C. T. Chan +1
Photonic flat bands are hard to engineer because Maxwell's equations are vectorial: transversality obstructs the localized scalar-like bases that generate destructive-interference…
Acoustic metamaterials with spinning components
Degang Zhao, Yao-Ting Wang, Kin-Hung Fung +2
Using both multiple scattering theory and effective medium theory, we find that an acoustic metamaterial consisting of an array of spinning cylinders can possess a host of unusual…
Topological interface modes in local resonant acoustic systems
Degang Zhao, Meng Xiao, C. W. Ling +2
Topological phononic crystals (PCs) are periodic artificial structures which can support nontrivial acoustic topological bands, and their topological properties are linked to the e…
Negative Optical Torque
Jun Chen, Jack Ng, Kun Ding +3
Maxwell noted that light carries angular momentum, and as such it can exert torques on material objects. This was subsequently proved by Beth in 1936. Applications of these opto-me…
Topological Edge Plasmon Modes between Diatomic Chains of Nanoparticles
C. W. Ling, Meng Xiao, C. T. Chan +2
We study the topological edge plasmon modes between two "diatomic" chains of identical plasmonic nanoparticles. Zak phase for longitudinal plasmon modes in each chain is calculated…
Localization characteristics of two-dimensional quasicrystals consisting of metal nanoparticles
Jian-Wen Dong, Kin Hung Fung, C. T. Chan +1
Using the eigen-decomposition method, we investigated the plasmonic modes in a two-dimensional quasicrystalline array of metal nanoparticles. Various properties of the plasmonic mo…
Complex band structure and plasmon lattice Green's function of a periodic metal-nanoparticle chain
Kin Hung Fung, Ross Chin Hang Tang, C. T. Chan
When the surface plasmon resonance in a metal-nanoparticle chain is excited at one point, the response signal will generally decay down the chain due to absorption and radiation lo…
Negative Group Velocity from Quadrupole Resonance of Plasmonic Spheres
Dezhuan Han, Yun Lai, Kin Hung Fung +2
We study the dispersions of plasmonic bands that arise from the coupling of electric quadrupole resonances in three dimensional photonic crystals (PCs) consisting of plasmonic sphe…
Negative group velocity in layer-by-layer chiral photonic crystals
Kin Hung Fung, Jeffrey Chi Wai Lee, C. T. Chan
We study the group velocity of light in layer-by-layer chiral photonic crystals composed of dielectrics and metals. Through studying the band structures with an extended-zone schem…
Collective plasmonic modes of metal nano-particles in two-dimensional periodic regular arrays
Yu-Rong Zhen, Kin Hung Fung, C. T. Chan
We investigate the collective plasmonic modes of metal nano-particles in periodic two-dimensional (2D) arrays within a point-dipole description. As an open system, the full-dynamic…
Analytical study of the plasmonic modes of metal nanoparticle circular array
Kin Hung Fung, C. T. Chan
We analyze the plasmonic modes of a metal nanoparticle circular array. Closed form solutions to the eigenmode problem are given. For each polarization, the plasmonic mode with the…
Plasmonic modes in periodic metal nanoparticle chains: A direct dynamic eigenmode analysis
Kin Hung Fung, C. T. Chan
We demonstrate an efficient eigen-decomposition method for analyzing the guided modes in metal nanoparticle chains. The proposed method has the advantage of showing the dispersion…
Optical response of metal nanoparticle chains
Kin Hung Fung, C. T. Chan
We study the optical responses of metal nanoparticle chains. Multiple scattering calculations are used to study the extinction cross sections of silver nanosphere chains of finite…