565 citations · 636 across the 5 of their papers we have counts for
6 papers
Artificial Perfect Electric Conductor-Perfect Magnetic Conductor Anisotropic Metasurface for Generating Orbital Angular Momentum of Microwave with Nearly Perfect Conversion Efficiency
Menglin L. N. Chen, Li Jun Jiang, Wei E. I. Sha
Orbital angular momentum (OAM) is a promising degree of freedom for fundamental studies in electromagnetics and quantum mechanics. The unlimited state space of OAM shows a great po…
Unidirectional and Wavelength Selective Photonic Sphere-Array Nanoantennas
Yang G. Liu, Wallace C. H. Choy, Wei E. I. Sha +1
We design a photonic sphere-array nanoantenna (NA) exhibiting both strong directionality and wavelength selectivity. Although the geometric configuration of the photonic NA resembl…
Observing Abnormally Large Group Velocity at the Plasmonic Band Edge via a Universal Eigenvalue Analysis
Wei E. I. Sha, Ling Ling Meng, Wallace C. H. Choy +1
We developed a novel universal eigenvalue analysis for 2D arbitrary nanostructures comprising dispersive and lossy materials. The complex dispersion relation (or complex Bloch band…
The Efficiency Limit of CH3NH3PbI3 Perovskite Solar Cells
Wei E. I. Sha, Xingang Ren, Luzhou Chen +1
With the consideration of photon recycling effect, the efficiency limit of methylammonium lead iodide (CH3NH3PbI3) perovskite solar cells is predicted by a detailed balance model.…
Green's Dyadic, Spectral Function, Local Density of States, and Fluctuation Dissipation Theorem
W. C. Chew, W. E. I Sha, Q. I. Dai
The spectral functions are studied in conjunction with the dyadic Green's functions for various media. The dyadic Green's functions are found using the eigenfunction expansion meth…
The Physics of Compressive Sensing and the Gradient-Based Recovery Algorithms
Qi Dai, Wei Sha
The physics of compressive sensing (CS) and the gradient-based recovery algorithms are presented. First, the different forms for CS are summarized. Second, the physical meanings of…