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Reconfigurable MEMS Fano metasurfaces with multiple-input-output states for logic operations at terahertz frequencies

Reconfigurable MEMS Fano metasurfaces with multiple-input-output states for logic operations at terahertz frequencies
Reconfigurable MEMS Fano metasurfaces with multiple-input-output states for logic operations at terahertz frequencies
A broad range of dynamic metasurfaces has been developed for manipulating the intensity, phase and wavefront of electromagnetic radiation from microwaves to optical frequencies. However, most of these metasurfaces operate in single-input-output state. Here, we experimentally demonstrate a reconfigurable MEMS Fano resonant metasurface possessing multiple-input-output (MIO) states that performs logic operations with two independently controlled electrical inputs and an optical read-out at terahertz frequencies. The far-field behaviour of Fano resonance exhibits XOR and XNOR operations, while the near-field resonant confinement enables the NAND operation. The MIO configuration resembling hysteresis type closed loop behaviour is realized through inducing electromechanically tuneable out-of-plane anisotropy in the near-field coupling of constituent resonator structures. The XOR metamaterial gate possesses potential applications in cryptographically secured terahertz wireless communication networks. Furthermore, the MIO features could lay the foundation for realization of programmable and randomly accessible metamaterials with enhanced electro-optical performance across terahertz, infrared and optical frequencies.
Manjappa, Manukumara
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Pitchappa, Prakash
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Singh, Navab
ae6814d1-f7dc-496e-a18a-316c3c3ba4c6
Wang, Nan
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Zheludev, Nikolai
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Lee, Chengkuo
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Singh, Ranjan
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Manjappa, Manukumara
0034fce0-00e0-4cfe-b01d-988ba3a4d388
Pitchappa, Prakash
6d5889e9-4672-448c-b950-14d2d51fccf1
Singh, Navab
ae6814d1-f7dc-496e-a18a-316c3c3ba4c6
Wang, Nan
642b512c-b1e6-44f5-b48f-7baa25fd225c
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Lee, Chengkuo
b841f394-9e77-4c4d-b1ed-65d8638292f4
Singh, Ranjan
895cd3c3-d3d4-4c1f-81f9-f7cbbd13eae8

Manjappa, Manukumara, Pitchappa, Prakash, Singh, Navab, Wang, Nan, Zheludev, Nikolai, Lee, Chengkuo and Singh, Ranjan (2018) Reconfigurable MEMS Fano metasurfaces with multiple-input-output states for logic operations at terahertz frequencies. Nature Communications, 9, [4056]. (doi:10.1038/s41467-018-06360-5).

Record type: Article

Abstract

A broad range of dynamic metasurfaces has been developed for manipulating the intensity, phase and wavefront of electromagnetic radiation from microwaves to optical frequencies. However, most of these metasurfaces operate in single-input-output state. Here, we experimentally demonstrate a reconfigurable MEMS Fano resonant metasurface possessing multiple-input-output (MIO) states that performs logic operations with two independently controlled electrical inputs and an optical read-out at terahertz frequencies. The far-field behaviour of Fano resonance exhibits XOR and XNOR operations, while the near-field resonant confinement enables the NAND operation. The MIO configuration resembling hysteresis type closed loop behaviour is realized through inducing electromechanically tuneable out-of-plane anisotropy in the near-field coupling of constituent resonator structures. The XOR metamaterial gate possesses potential applications in cryptographically secured terahertz wireless communication networks. Furthermore, the MIO features could lay the foundation for realization of programmable and randomly accessible metamaterials with enhanced electro-optical performance across terahertz, infrared and optical frequencies.

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Reconfigurable MEMS Fano metasurfaces with multiple-input-output states for logic operations at terahertz frequencies - Accepted Manuscript
Available under License Creative Commons Attribution.
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More information

Accepted/In Press date: 30 July 2018
e-pub ahead of print date: 3 October 2018
Published date: 3 October 2018

Identifiers

Local EPrints ID: 422717
URI: http://eprints.soton.ac.uk/id/eprint/422717
PURE UUID: d5acac48-9da5-425f-9eb5-5898db92afcc
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 01 Aug 2018 16:30
Last modified: 26 Nov 2021 05:11

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Contributors

Author: Manukumara Manjappa
Author: Prakash Pitchappa
Author: Navab Singh
Author: Nan Wang
Author: Chengkuo Lee
Author: Ranjan Singh

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