Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime

Elnaz Shokati; Nosrat Granpayeh

doi:10.1109/MMWaTT.2016.7869864

Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime

Elnaz Shokati, Nosrat Granpayeh

School of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

5 Citations (Scopus)

Abstract

The ultrathin graphene metasurface is proposed and analyzed as a cloaking shell for cylindrical objects with the aim of wideband tunable scattering cancellation in terahertz (THz) spectrum. This mantle cloak is structured by periodic array of graphene nanopatches. In this paper, it is analytically shown that the metasurface reactance can be tuned from inductive to capacitive, as a function of the graphene's Fermi energy and dimensions of nanopatches, that provide the possibility of cloaking both dielectric and conductor cylinders. The appropriate Fermi energy and dimensions are obtained by optimization. To provide wideband invisibility, we use inhomogeneous graphene nanopatches, that we could significantly increase the 3-dB bandwidth approximately 8 times more than the homogeneous metasurface. These resultes have great interest for efficient invisibility, low noise THz sensing and communication systems and networks.

Original language	English
Title of host publication	4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	9-13
Number of pages	5
ISBN (Electronic)	9781509054145
DOIs	https://doi.org/10.1109/MMWaTT.2016.7869864
Publication status	Published - 2 Jul 2016
Event	4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016 - Tehran, Iran, Islamic Republic of Duration: 20 Dec 2016 → 22 Dec 2016

Publication series

Name	Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT
Volume	0
ISSN (Print)	2157-0965
ISSN (Electronic)	2157-0973

Conference

Conference	4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016
Country/Territory	Iran, Islamic Republic of
City	Tehran
Period	20/12/16 → 22/12/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Cloaking
graphene metasurface
mantle cloak
scattering cancellation

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10.1109/MMWaTT.2016.7869864

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Shokati, E., & Granpayeh, N. (2016). Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime. In 4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016 (pp. 9-13). Article 7869864 (Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT; Vol. 0). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/MMWaTT.2016.7869864

Shokati, Elnaz ; Granpayeh, Nosrat. / Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime. 4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016. Institute of Electrical and Electronics Engineers (IEEE), 2016. pp. 9-13 (Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT).

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abstract = "The ultrathin graphene metasurface is proposed and analyzed as a cloaking shell for cylindrical objects with the aim of wideband tunable scattering cancellation in terahertz (THz) spectrum. This mantle cloak is structured by periodic array of graphene nanopatches. In this paper, it is analytically shown that the metasurface reactance can be tuned from inductive to capacitive, as a function of the graphene's Fermi energy and dimensions of nanopatches, that provide the possibility of cloaking both dielectric and conductor cylinders. The appropriate Fermi energy and dimensions are obtained by optimization. To provide wideband invisibility, we use inhomogeneous graphene nanopatches, that we could significantly increase the 3-dB bandwidth approximately 8 times more than the homogeneous metasurface. These resultes have great interest for efficient invisibility, low noise THz sensing and communication systems and networks.",

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author = "Elnaz Shokati and Nosrat Granpayeh",

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Shokati, E & Granpayeh, N 2016, Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime. in 4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016., 7869864, Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT, vol. 0, Institute of Electrical and Electronics Engineers (IEEE), pp. 9-13, 4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016, Tehran, Iran, Islamic Republic of, 20/12/16. https://doi.org/10.1109/MMWaTT.2016.7869864

Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime. / Shokati, Elnaz; Granpayeh, Nosrat.
4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016. Institute of Electrical and Electronics Engineers (IEEE), 2016. p. 9-13 7869864 (Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT; Vol. 0).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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T1 - Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime

AU - Shokati, Elnaz

AU - Granpayeh, Nosrat

PY - 2016/7/2

Y1 - 2016/7/2

N2 - The ultrathin graphene metasurface is proposed and analyzed as a cloaking shell for cylindrical objects with the aim of wideband tunable scattering cancellation in terahertz (THz) spectrum. This mantle cloak is structured by periodic array of graphene nanopatches. In this paper, it is analytically shown that the metasurface reactance can be tuned from inductive to capacitive, as a function of the graphene's Fermi energy and dimensions of nanopatches, that provide the possibility of cloaking both dielectric and conductor cylinders. The appropriate Fermi energy and dimensions are obtained by optimization. To provide wideband invisibility, we use inhomogeneous graphene nanopatches, that we could significantly increase the 3-dB bandwidth approximately 8 times more than the homogeneous metasurface. These resultes have great interest for efficient invisibility, low noise THz sensing and communication systems and networks.

AB - The ultrathin graphene metasurface is proposed and analyzed as a cloaking shell for cylindrical objects with the aim of wideband tunable scattering cancellation in terahertz (THz) spectrum. This mantle cloak is structured by periodic array of graphene nanopatches. In this paper, it is analytically shown that the metasurface reactance can be tuned from inductive to capacitive, as a function of the graphene's Fermi energy and dimensions of nanopatches, that provide the possibility of cloaking both dielectric and conductor cylinders. The appropriate Fermi energy and dimensions are obtained by optimization. To provide wideband invisibility, we use inhomogeneous graphene nanopatches, that we could significantly increase the 3-dB bandwidth approximately 8 times more than the homogeneous metasurface. These resultes have great interest for efficient invisibility, low noise THz sensing and communication systems and networks.

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BT - 4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016

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Shokati E, Granpayeh N. Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime. In 4th International Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT 2016. Institute of Electrical and Electronics Engineers (IEEE). 2016. p. 9-13. 7869864. (Conference on Millimeter-Wave and Terahertz Technologies, MMWaTT). doi: 10.1109/MMWaTT.2016.7869864

Wideband cloaking by using inhomogeneous nanostructured graphene metasurface for tunable cloaking in the terahertz regime

Abstract

Publication series

Conference

Bibliographical note

Keywords

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