Mie Scattering Analog Circuit Emulator
Phys. Rev. Lett. 136, 223802 – Published 2 June, 2026
DOI: https://doi.org/10.1103/n9kj-6j67
Abstract
Mie scattering describes the linear interaction of electromagnetic waves with spheres of arbitrary composition and size. Here, we introduce and experimentally validate an analog circuit emulator of Mie scattering by temporally dispersive spheres. The emulator reconstructs the full scattering response using a modular lumped-element network, in which excitation conditions are set by generators and filters, while distinct resistor-inductor-capacitor networks encode material dispersion and radiation properties of the supported resonant modes. We demonstrate a one-to-one correspondence between the time-averaged powers scattered, absorbed, and extinguished by a dispersive sphere, and the power absorbed or supplied within distinct circuit stages, yielding a circuit-level realization of optical power conservation. Our results establish an experimentally accessible platform for exploring and designing dispersion-engineered scatterers.
