Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern

By Andrea Alù, Mario G. Silveirinha, A. Salandrino, Nader Engheta. 2006

927 citations recorded by the source corpus.

In this work, we investigate the response of epsilon-near-zero metamaterials and plasmonic materials to electromagnetic source excitation. The use of these media for tailoring the phase of radiation pattern of arbitrary sources is proposed and analyzed numerically and analytically for some canonical geometries. In particular, the possibility of employing planar layers, cylindrical shells, or other more complex shapes made of such materials in order to isolate two regions of space and to tailor the phase pattern in one region, fairly independent of the excitation shape present in the other region, is demonstrated with theoretical arguments and some numerical examples. Physical insights into the phenomenon are also presented and discussed together with potential applications of the phenomenon.

Subfields: Aerospace Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/78428663ef8d5b522ae7bf68028f4a483f056060

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In Aerospace Engineering

In Atomic and Molecular Physics, and Optics

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Active times for acoustic metamaterials (2019, background): “Such an exotic behavior holds promise for a variety of exciting applications such as tailoring radiation phase patterns [89], and cloaking [90].”
Nonlinear metasurfaces: a paradigm shift in nonlinear optics (2017, background): “ENZ materials enable interesting linear phenomena including tunneling and squeezing of energy through arbitrarily distorted narrow channels [70], highly directive emission from light sources [71], tailoring of the radiation phase pattern [72], trapping of light [73], and strong Purcell enhancements ”
Applications of Hyperbolic Metamaterial Substrates (2012, background): “Various classes of metamaterials have emerged that show exotic electromagnetic properties like negative index [5], optical magnetism [6], giant chirality [7–9], epsilon-nearzero [10], bianisotropy [11], and spatial dispersion [12] among many others.”