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@article{848101,
author = {Ma, Y. G. and Ong, C. K. and Tyc, Tomáš and Leonhardt, Ulf},
article_number = {8},
keywords = {retroreflector; metamaterial; transformation optics; singularity},
language = {eng},
issn = {1476-1122},
journal = {Nature Materials},
title = {An omnidirectional retroreflector based on the transmutation of dielectric singularities},
url = {http://www.nature.com/nmat/journal/v8/n8/abs/nmat2489.html},
volume = {8},
year = {2009}
}
TY - JOUR
ID - 848101
AU - Ma, Y. G. - Ong, C. K. - Tyc, Tomáš - Leonhardt, Ulf
PY - 2009
TI - An omnidirectional retroreflector based on the transmutation of dielectric singularities
JF - Nature Materials
VL - 8
IS - 8
SP - 639 - 642
EP - 639 - 642
SN - 14761122
KW - retroreflector
KW - metamaterial
KW - transformation optics
KW - singularity
UR - http://www.nature.com/nmat/journal/v8/n8/abs/nmat2489.html
N2 - Transformation optics is a concept used in some metamaterials to guide light on a predetermined path. In this approach, the materials implement coordinate transformations on electromagnetic waves to create the illusion that the waves are propagating through a virtual space. Transforming space by appropriately designed materials makes devices possible that have been deemed impossible. In particular, transformation optics has led to the demonstration of invisibility cloaking for microwaves, surface plasmons and infrared light. Here, on the basis of transformation optics, we implement a microwave device that would normally require a dielectric singularity, an infinity in the refractive index. To fabricate such a device, we transmute a dielectric singularity in virtual space into a mere topological defect in a real metamaterial. In particular, we demonstrate an omnidirectional retroreflector, a device for faithfully reflecting images and for creating high visibility from all directions.
ER -
MA, Y. G., C. K. ONG, Tomáš TYC and Ulf LEONHARDT. An omnidirectional retroreflector based on the transmutation of dielectric singularities. \textit{Nature Materials}. 2009, vol.~8, No~8, p.~639 - 642. ISSN~1476-1122.
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