Tunable plasmonic optical responses and the sensing application in graphene-based metasurface

Li, Zhenxiong; Yang, Ning; Liu, Yiting; Li, Li; Zhong, Zhenyang; Song, Chao; He, Zhihui; Cui, Wei; Xue, Weiwei; Li, Lingqiao; Li, Chunjiang; Xu, Hui; Chen, Zhiquan; He, Hui

doi:10.1016/j.diamond.2022.109071

Cited by 8 publications

(5 citation statements)

References 34 publications

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“…As can be seen from Table 1, the maximum sensitivity at Dip1 is 0.5612 THz/RIU, while the maximum sensitivity at Dip2 is 1.4028 THz/RIU. By defining the FOM as FOM = ∆T T ∆n 33 , where ∆T is the change in transmittance and ∆nis the change in refractive index, we calculated the maximum FOM values for the proposed graphene metasurface structure, as shown in Fig. 10.…”

Section: Resultsmentioning

confidence: 99%

“…In 2022, Yixuan Wang et al designed a metasurface periodic structure consisting of continuous graphene bands and truncated graphene bands with a sensitivity up to 0.7928 THz/RIU 32 . In 2022, Zhenxiong Li et al designed a metasurface structure which contains a grapheme ribbon and U-shaped graphene 33 . Researchs in the field of graphene SPPs sensors have yielded several impressive results.…”

Section: Introductionmentioning

confidence: 99%

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Sensing based on plasmon-induced transparency in H-shaped graphene-based metamaterials

Wu,

Chen,

Wang

et al. 2024

Preprint

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Graphene can support surface plasmon polaritons (SPPs) in terahertz band and the graphene SPPs sensors are widely used in the field of terahertz micro- and nano-optical devices. In this paper, we propose an H-shaped graphene metasurface and use finite-difference time-domain (FDTD) method to investigate its generated plasmon-induced transparency (PIT) phenomenon. Our results show that the Fermi energy levels, as well as the certain shape parameters, can effectively modulate the PIT phenomenon of the proposed structure. Interestingly, changing some of these shape parameters can excite two dips into three. In terms of sensing performance, the maximum values of sensitivity and figure of merit (FOM) are 1.4028 THz/RIU and 17.97, respectively. These findings offer valuable guidance for the use of terahertz micro-nano optical graphene SPPs sensors.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensing based on plasmon-induced transparency in H-shaped graphene-based metamaterials

Wu,

Chen,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…As can be seen from Table 1, the maximum sensitivity at Dip1 is 0.5612 THz/RIU, while the maximum sensitivity at Dip2 is 1.4028 THz/RIU. By defining the FOM as FOM = ∆T/T∆n [38], where ∆T is the change in transmission and ∆n is the change in refractive index, we calculated the maximum FOM values for the proposed graphene metasurface structure, as shown in Figure 10. From Figure 10, we can find that the maximum FOM values were 15.06, 15.92, 16.10, 16.89, 17.56, 17.18, 17.97, and 17.52 when the refractive index of the outer medium was 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…In 2022, Yixuan Wang et al designed a periodic metasurface structure consisting of continuous graphene bands and truncated graphene bands with a sensitivity of up to 0.7928 THz/RIU [ 37 ]. In 2022, Zhenxiong Li et al designed a metasurface structure that contains a graphene ribbon and U-shaped graphene [ 38 ]. Research in the field of graphene SPP sensors has yielded several impressive results.…”

Section: Introductionmentioning

confidence: 99%

Sensing Based on Plasmon-Induced Transparency in H-Shaped Graphene-Based Metamaterials

Wu,

Chen,

Wang

et al. 2024

Nanomaterials

Self Cite

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Graphene can support surface plasmon polaritons (SPPs) in the terahertz band, and graphene SPP sensors are widely used in the field of terahertz micro- and nano-optical devices. In this paper, we propose an H-shaped graphene metasurface and investigate the plasmon-induced transparency (PIT) phenomenon in the proposed structure using the finite-difference time-domain (FDTD) method. Our results show that the Fermi energy levels, as well as certain shape parameters, can effectively modulate the PIT phenomenon in the proposed structure. Interestingly, changing some of these shape parameters can excite two dips into three. In terms of sensing performance, the maximum values of sensitivity and figure of merit (FOM) are 1.4028 THz/RIU and 17.97, respectively. These results offer valuable guidance for the use of terahertz optical graphene SPP sensors.

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“…In 2021, Cui et al put forward three graphene strips with different shapes for dual-PIT sensing applications and obtained a sensing sensitivity of 4.19 THz RIU −1 [15]. In 2022, Li et al achieved 3.4269 THz RIU −1 on a graphene ribbon and U-shaped graphene pattern for dual-PIT sensing application [16]. Although many graphene-based PIT sensors are reported, there are few reports about triple-PIT sensing applications with high sensitivity based on graphene structure.…”

Section: Introductionmentioning

confidence: 99%

High-sensitive refractive index sensing and excellent slow light based on tunable triple plasmon-induced transparency in monolayer graphene based metamaterial

Zhou¹,

Xu²,

Li³

et al. 2022

Commun. Theor. Phys.

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A patterned monolayer graphene metamaterial structure consisting of six graphene blocks and two graphene strips is proposed to generate triple plasmon-induced transparency (PIT). Triple-PIT can be effectively modulated by Fermi levels of graphene. The theoretical calculated results by coupled mode theory (CMT) show high matching degree with the numerical simulated results by finite-difference time-domain (FDTD). Intriguingly, the high-sensitive refractive index sensing and excellent slow-light performance can be realized in the proposed graphene metamaterial structure. The sensitivity (S) and figure of merit (FOM) can reach up to 5.7115 THz/RIU and 116.32, respectively. Moreover, the maximum group refractive index is 1036. Hence, these results may provide a new idea for designing graphene-based sensors and slow light devices.

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Tunable plasmonic optical responses and the sensing application in graphene-based metasurface

Cited by 8 publications

References 34 publications

Sensing based on plasmon-induced transparency in H-shaped graphene-based metamaterials

Sensing based on plasmon-induced transparency in H-shaped graphene-based metamaterials

Sensing Based on Plasmon-Induced Transparency in H-Shaped Graphene-Based Metamaterials

High-sensitive refractive index sensing and excellent slow light based on tunable triple plasmon-induced transparency in monolayer graphene based metamaterial

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