Enhancement of the Purcell Effect by the Wire Metamaterials Formed by the Hexagonal Unit Cells

Tatjana Gric; Edik Rafailov

doi:10.3390/app10165687

Enhancement of the Purcell Effect by the Wire Metamaterials Formed by the Hexagonal Unit Cells

Tatjana Gric, Edik Rafailov

Aston Institute of Photonic Technologies (AiPT)

Research output: Contribution to journal › Article › peer-review

Abstract

The dependence of the Purcell factor on nanowire metamaterial geometry was analyzed. Calculations made about the Purcell factor in realistic composites, operating at an optical spectral range, are provided. We applied a metamaterial, aiming to mitigate the negative effects of absorption in metals on the Purcell effect in nanowire structures. A nanowire metamaterial was treated as an anisotropic composite in the long-wavelength limit. We investigated the mode patterns of the surface waves, propagating at the boundary separating such a structure and a dielectric material, along with the position of the peak in the local density of states, for the various filling factors of the periodic structure. By calculating the frequency dependence of the Purcell factor, we showed an increase in the peak value in comparison with the conventional plasmonic structure in the (1−100 THz) frequency range. Moreover, an optimal set of the parameters, needed to obtain the two topological transitions in the frequency range under investigation, is proposed.

Original language	English
Article number	5687
Journal	Applied Sciences
Volume	10
Issue number	16
DOIs	https://doi.org/10.3390/app10165687
Publication status	Published - 17 Aug 2020

Bibliographical note

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme, under the Marie Sklodowska Curie grant agreement No 713694, and from the Engineering and Physical Sciences Research Council (EPSRC) (Grant No. EP/R024898/1).

Keywords

Purcell factor
metamaterial
nanowire

Access to Document

10.3390/app10165687Licence: CC BY 3.0

applsci-10-05687.pdf
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Final published version, 0 bytesLicence: CC BY 3.0

Cite this

@article{6194fe5c22dd4c8eb9c9806ed93bd8d4,

title = "Enhancement of the Purcell Effect by the Wire Metamaterials Formed by the Hexagonal Unit Cells",

abstract = "The dependence of the Purcell factor on nanowire metamaterial geometry was analyzed. Calculations made about the Purcell factor in realistic composites, operating at an optical spectral range, are provided. We applied a metamaterial, aiming to mitigate the negative effects of absorption in metals on the Purcell effect in nanowire structures. A nanowire metamaterial was treated as an anisotropic composite in the long-wavelength limit. We investigated the mode patterns of the surface waves, propagating at the boundary separating such a structure and a dielectric material, along with the position of the peak in the local density of states, for the various filling factors of the periodic structure. By calculating the frequency dependence of the Purcell factor, we showed an increase in the peak value in comparison with the conventional plasmonic structure in the (1−100 THz) frequency range. Moreover, an optimal set of the parameters, needed to obtain the two topological transitions in the frequency range under investigation, is proposed.",

keywords = "Purcell factor, metamaterial, nanowire",

author = "Tatjana Gric and Edik Rafailov",

note = "{\textcopyright} 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Funding: This project has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme, under the Marie Sklodowska Curie grant agreement No 713694, and from the Engineering and Physical Sciences Research Council (EPSRC) (Grant No. EP/R024898/1).",

year = "2020",

month = aug,

day = "17",

doi = "10.3390/app10165687",

language = "English",

volume = "10",

journal = "Applied Sciences",

issn = "2076-3417",

publisher = "MDPI AG",

number = "16",

}

TY - JOUR

T1 - Enhancement of the Purcell Effect by the Wire Metamaterials Formed by the Hexagonal Unit Cells

AU - Gric, Tatjana

AU - Rafailov, Edik

N1 - © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme, under the Marie Sklodowska Curie grant agreement No 713694, and from the Engineering and Physical Sciences Research Council (EPSRC) (Grant No. EP/R024898/1).

PY - 2020/8/17

Y1 - 2020/8/17

N2 - The dependence of the Purcell factor on nanowire metamaterial geometry was analyzed. Calculations made about the Purcell factor in realistic composites, operating at an optical spectral range, are provided. We applied a metamaterial, aiming to mitigate the negative effects of absorption in metals on the Purcell effect in nanowire structures. A nanowire metamaterial was treated as an anisotropic composite in the long-wavelength limit. We investigated the mode patterns of the surface waves, propagating at the boundary separating such a structure and a dielectric material, along with the position of the peak in the local density of states, for the various filling factors of the periodic structure. By calculating the frequency dependence of the Purcell factor, we showed an increase in the peak value in comparison with the conventional plasmonic structure in the (1−100 THz) frequency range. Moreover, an optimal set of the parameters, needed to obtain the two topological transitions in the frequency range under investigation, is proposed.

AB - The dependence of the Purcell factor on nanowire metamaterial geometry was analyzed. Calculations made about the Purcell factor in realistic composites, operating at an optical spectral range, are provided. We applied a metamaterial, aiming to mitigate the negative effects of absorption in metals on the Purcell effect in nanowire structures. A nanowire metamaterial was treated as an anisotropic composite in the long-wavelength limit. We investigated the mode patterns of the surface waves, propagating at the boundary separating such a structure and a dielectric material, along with the position of the peak in the local density of states, for the various filling factors of the periodic structure. By calculating the frequency dependence of the Purcell factor, we showed an increase in the peak value in comparison with the conventional plasmonic structure in the (1−100 THz) frequency range. Moreover, an optimal set of the parameters, needed to obtain the two topological transitions in the frequency range under investigation, is proposed.

KW - Purcell factor

KW - metamaterial

KW - nanowire

UR - https://www.mdpi.com/2076-3417/10/16/5687/htm

U2 - 10.3390/app10165687

DO - 10.3390/app10165687

M3 - Article

SN - 2076-3417

VL - 10

JO - Applied Sciences

JF - Applied Sciences

IS - 16

M1 - 5687

ER -

Enhancement of the Purcell Effect by the Wire Metamaterials Formed by the Hexagonal Unit Cells

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this