TY - JOUR
T1 - Invisibility and cloaking structures as weak or strong solutions of Devaney-Wolf theorem
AU - Labate, Giuseppe
AU - Matekovits, Ladislau
PY - 2016/8/22
Y1 - 2016/8/22
N2 - Inspired by a general theorem on non-radiating sources demonstrated by Devaney and Wolf, a unified theory for invisible and cloaking structures is here proposed. By solving Devaney-Wolf theorem in the quasi-static limit, a weak solution is obtained, demonstrating the existence of Anapole modes, Mantle Cloaking and Plasmonic Cloaking. Beyond the quasi-static regime, a strong solution of Devaney-Wolf theorem can be formulated, predicting general non-scattering devices based on directional invisibility, Transformation Optics, neutral inclusions and refractive index continuity. Both weak and strong solutions are analytically demonstrated to depend on the concept of contrast, mathematically defined as a normalized difference between constitutive parameters (or wave-impedance property) of a material and its surrounding background.
AB - Inspired by a general theorem on non-radiating sources demonstrated by Devaney and Wolf, a unified theory for invisible and cloaking structures is here proposed. By solving Devaney-Wolf theorem in the quasi-static limit, a weak solution is obtained, demonstrating the existence of Anapole modes, Mantle Cloaking and Plasmonic Cloaking. Beyond the quasi-static regime, a strong solution of Devaney-Wolf theorem can be formulated, predicting general non-scattering devices based on directional invisibility, Transformation Optics, neutral inclusions and refractive index continuity. Both weak and strong solutions are analytically demonstrated to depend on the concept of contrast, mathematically defined as a normalized difference between constitutive parameters (or wave-impedance property) of a material and its surrounding background.
UR - http://www.scopus.com/inward/record.url?scp=84991110287&partnerID=8YFLogxK
U2 - 10.1364/OE.24.019245
DO - 10.1364/OE.24.019245
M3 - Article
C2 - 27557204
AN - SCOPUS:84991110287
SN - 1094-4087
VL - 24
SP - 19245
EP - 19253
JO - Optics Express
JF - Optics Express
IS - 17
ER -