Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows

Currently, metasurfaces (MSs) integrating with different active materials have been widely explored to actively manipulate the resonance intensity of multi-band electromagnetic induced transparency (EIT) windows. Unfortunately, these hybrid MSs can only realize the global control of multi-EIT window...
Ausführliche Beschreibung

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Autor*in:	Xunjun He [verfasserIn] Chenguang Sun [verfasserIn] Yue Wang [verfasserIn] Guangjun Lu [verfasserIn] Jiuxing Jiang [verfasserIn] Yuqiang Yang [verfasserIn] Yachen Gao [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	graphene-functionalized metasurfaces dual-reflection window selective control electric doping

Übergeordnetes Werk:	In: Nanomaterials - MDPI AG, 2012, 11(2021), 9, p 2420
Übergeordnetes Werk:	volume:11 ; year:2021 ; number:9, p 2420

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DOI / URN:	10.3390/nano11092420

Katalog-ID:	DOAJ04860559X

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authorswithroles_txt_mv	Xunjun He @@aut@@ Chenguang Sun @@aut@@ Yue Wang @@aut@@ Guangjun Lu @@aut@@ Jiuxing Jiang @@aut@@ Yuqiang Yang @@aut@@ Yachen Gao @@aut@@
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callnumber-first	Q - Science
author	Xunjun He
spellingShingle	Xunjun He misc QD1-999 misc graphene-functionalized metasurfaces misc dual-reflection window misc selective control misc electric doping misc Chemistry Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows
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topic_title	QD1-999 Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows graphene-functionalized metasurfaces dual-reflection window selective control electric doping
topic	misc QD1-999 misc graphene-functionalized metasurfaces misc dual-reflection window misc selective control misc electric doping misc Chemistry
topic_unstemmed	misc QD1-999 misc graphene-functionalized metasurfaces misc dual-reflection window misc selective control misc electric doping misc Chemistry
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title	Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows
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title_full	Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows
author_sort	Xunjun He
journal	Nanomaterials
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author_browse	Xunjun He Chenguang Sun Yue Wang Guangjun Lu Jiuxing Jiang Yuqiang Yang Yachen Gao
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title_sort	graphene-modulated terahertz metasurfaces for selective and active control of dual-band electromagnetic induced reflection (eir) windows
callnumber	QD1-999
title_auth	Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows
abstract	Currently, metasurfaces (MSs) integrating with different active materials have been widely explored to actively manipulate the resonance intensity of multi-band electromagnetic induced transparency (EIT) windows. Unfortunately, these hybrid MSs can only realize the global control of multi-EIT windows rather than selective control. Here, a graphene-functionalized complementary terahertz MS, composed of a dipole slot and two graphene-integrated quadrupole slots with different sizes, is proposed to execute selective and active control of dual-band electromagnetic induced reflection (EIR) windows. In this structure, dual-band EIR windows arise from the destructive interference caused by the near field coupling between the bright dipole slot and dark quadrupole slot. By embedding graphene ribbons beneath two quadrupole slots, the resonance intensity of two windows can be selectively and actively modulated by adjusting Fermi energy of the corresponding graphene ribbons via electrostatic doping. The theoretical model and field distributions demonstrate that the active tuning behavior can be ascribed to the change in the damper factor of the corresponding dark mode. In addition, the active control of the group delay is further investigated to develop compact slow light devices. Therefore, the selective and active control scheme introduced here can offer new opportunities and platforms for designing multifunctional terahertz devices.
abstractGer	Currently, metasurfaces (MSs) integrating with different active materials have been widely explored to actively manipulate the resonance intensity of multi-band electromagnetic induced transparency (EIT) windows. Unfortunately, these hybrid MSs can only realize the global control of multi-EIT windows rather than selective control. Here, a graphene-functionalized complementary terahertz MS, composed of a dipole slot and two graphene-integrated quadrupole slots with different sizes, is proposed to execute selective and active control of dual-band electromagnetic induced reflection (EIR) windows. In this structure, dual-band EIR windows arise from the destructive interference caused by the near field coupling between the bright dipole slot and dark quadrupole slot. By embedding graphene ribbons beneath two quadrupole slots, the resonance intensity of two windows can be selectively and actively modulated by adjusting Fermi energy of the corresponding graphene ribbons via electrostatic doping. The theoretical model and field distributions demonstrate that the active tuning behavior can be ascribed to the change in the damper factor of the corresponding dark mode. In addition, the active control of the group delay is further investigated to develop compact slow light devices. Therefore, the selective and active control scheme introduced here can offer new opportunities and platforms for designing multifunctional terahertz devices.
abstract_unstemmed	Currently, metasurfaces (MSs) integrating with different active materials have been widely explored to actively manipulate the resonance intensity of multi-band electromagnetic induced transparency (EIT) windows. Unfortunately, these hybrid MSs can only realize the global control of multi-EIT windows rather than selective control. Here, a graphene-functionalized complementary terahertz MS, composed of a dipole slot and two graphene-integrated quadrupole slots with different sizes, is proposed to execute selective and active control of dual-band electromagnetic induced reflection (EIR) windows. In this structure, dual-band EIR windows arise from the destructive interference caused by the near field coupling between the bright dipole slot and dark quadrupole slot. By embedding graphene ribbons beneath two quadrupole slots, the resonance intensity of two windows can be selectively and actively modulated by adjusting Fermi energy of the corresponding graphene ribbons via electrostatic doping. The theoretical model and field distributions demonstrate that the active tuning behavior can be ascribed to the change in the damper factor of the corresponding dark mode. In addition, the active control of the group delay is further investigated to develop compact slow light devices. Therefore, the selective and active control scheme introduced here can offer new opportunities and platforms for designing multifunctional terahertz devices.
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title_short	Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows
url	https://doi.org/10.3390/nano11092420 https://doaj.org/article/819c0468d7964a9aa944c1c757536086 https://www.mdpi.com/2079-4991/11/9/2420 https://doaj.org/toc/2079-4991
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author2	Chenguang Sun Yue Wang Guangjun Lu Jiuxing Jiang Yuqiang Yang Yachen Gao
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doi_str	10.3390/nano11092420
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up_date	2024-07-03T18:42:53.825Z
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Graphene-Modulated Terahertz Metasurfaces for Selective and Active Control of Dual-Band Electromagnetic Induced Reflection (EIR) Windows

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