Speaker: 曹鑫林博士，香港理工大学

Inviter: 刘晓东

Title: Electromagnetic Waves Generated by Hybrid Dieletric-Plasmonic Dimers

Language: Chinese

Time & Venue: 2026.03.30 10:00-11:00 南楼N613

Abstract: In this talk, we are concerned with the electromagnetic wave generated by hybrid dimers (composed of two closely coupled nano-particles with one plasmonic and the other dielectric), which can polarize both the incident electric and magnetic fields. Consequently, such hybrid dimers have the potential to modify both the electric permittivity and magnetic permeability of the surrounding medium if the two kinds of nano-particles share common resonant frequencies. We derive the asymptotic expansion of the fields generated by these hybrid dimers in the subwavelength regime, which particularly suggests parameter regimes where hybrid dimers can generate (double) negative effective permittivity and permeability and bi-anisotropic constitutive laws and eventually hyperbolic media.