@inproceedings{1dc08a73913f4583a3acaef3c34ad465,
title = "Proof of negative refraction: Beyond reasonable doubt?",
abstract = "The past two decades have witnessed a flurry of designs of material with a negative index of refraction. These designs have been verified by experimentally observing the refraction direction through a prism-shaped form of the material, and by numerically computing the phase velocity within the material. The possibility is demonstrated herein that - for the particular manner in which these verifications are performed - it is possible to obtain negatively refracted waves and the appearance of negative phase velocity even using 'standard' homogeneous materials with a positive index of refraction. These possibilities stem (a) from Floquet-Bloch modes that are excited because of the periodic shape of the prism hypotenuse, and (b) from particular locations at which the phase is sampled. As a result, additional empirical evidence is required to unambiguously prove material negativity.",
keywords = "Metamaterials, Negative refraction, Phase velocity",
author = "Marcus, {Sherman W.} and Ariel Epstein",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017 ; Conference date: 13-11-2017 Through 15-11-2017",
year = "2017",
month = jun,
day = "28",
doi = "https://doi.org/10.1109/COMCAS.2017.8244773",
language = "الإنجليزيّة",
series = "2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017",
pages = "1--4",
booktitle = "2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017",
}