Fundamental limits to nanoparticle extinction
Optics
2014-04-02 v3
Abstract
We show that there are shape-independent upper bounds to the extinction cross section per unit volume of randomly oriented nanoparticles, given only material permittivity. Underlying the limits are restrictive sum rules that constrain the distribution of quasistatic eigenvalues. Surprisingly, optimally-designed spheroids, with only a single quasistatic degree of freedom, reach the upper bounds for four permittivity values. Away from these permittivities, we demonstrate computationally-optimized structures that surpass spheroids and approach the fundamental limits.
Cite
@article{arxiv.1311.1445,
title = {Fundamental limits to nanoparticle extinction},
author = {Owen D. Miller and Chia W. Hsu and M. T. Homer Reid and Wenjun Qiu and Brendan G. DeLacy and John D. Joannopoulos and Marin Soljačić and Steven G. Johnson},
journal= {arXiv preprint arXiv:1311.1445},
year = {2014}
}
Comments
11 pages, 6 figures (include Supplementary Material)