284 citations · 2.2k across the 91 of their papers we have counts for
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Applications and Potentials of Reciprocal Bianisotropic Metasurfaces
Mohammad Albooyeh, Viktar Asadchy, Jinwei Zeng +2
We discuss different applications and potentials of reciprocal bianisotropic metasurfaces including uniform and gradient metasurfaces, in particular, with anisotropic, chiral, and…
Helicity Maximization of Structured Light to Empower Nanoscale Chiral Matter Interaction
Mina Hanifeh, Mohammad Albooyeh, Filippo Capolino
Structured light enables the characterization of chirality of optically small nanoparticles by taking advantage of the helicity maximization concept recently introduced in[1]. By r…
Optimally Chiral Electromagnetic Fields: Helicity Density and Interaction of Structured Light with Nanoscale Matter
Mina Hanifeh, Mohammad Albooyeh, Filippo Capolino
We propose the concept of helicity maximization applicable to structured light and obtain a universal rela-tion for the maximum of helicity density at a given field energy density.…
Exceptional Points of Degeneracy in Periodic Coupled Waveguides and the Interplay of Gain and Radiation Loss: Theoretical and Experimental Demonstration
Ahmed F. Abdelshafy, Mohamed A. K. Othman, Dmitry Oshmarin +2
We present a novel paradigm for dispersion engineering in coupled transmission lines (CTLs) based on exceptional points of degeneracy (EPDs). We develop a theory for fourth-order E…
Unscrambling Structured Chirality with Structured Light at Nanoscale Using Photo-induced Force
Mohammad Kamandi, Mohammad Albooyeh, Mehdi Veysi +4
We introduce a microscopy technique that facilitates the prediction of spatial features of chirality of nanoscale samples by exploiting photo-induced optical force exerted on an ac…
Exceptional Points of Degeneracy and Branch Points for Transmission-Line Problems - Linear Algebra and Bifurcation Theory Perspectives
George W. Hanson, Alexander B. Yakovlev, Mohamed Othman +1
We demonstrate several new aspects of exceptional points of degeneracy (EPD) pertaining to propagation in two uniform coupled transmission-line structures. We describe an EPD using…
Two-scale structure for giant field enhancement: combination of Rayleigh anomaly and colloidal plasmonic resonance
Mahsa Darvishzadeh-Varcheie, William J. Thrift, Mohammad Kamandi +2
We demonstrate theoretically and experimentally a two-scale architecture able to achieve giant field enhancement by simultaneously exploiting both the Rayleigh anomaly and localize…
Exceptional Points of Degeneracy Induced by Linear Time-Periodic Variation Hamidreza
Hamidreza Kazemi, Mohamed Y. Nada, Tarek Mealy +2
We present a general theory of exceptional points of degeneracy (EPD) in periodically time-variant systems that do not necessarily require the presence of loss or gain, and we show…
Functional metasurfaces: Do we need normal polarizations?
Sergei A. Tretyakov, Do-Hoon Kwon, Mohammad Albooyeh +1
We consider reciprocal metasurfaces with engineered reflection and transmission coefficients and study the role of normal (with respect to the metasurface plane) electric and magne…