Multi-functional graphene periodic patterns

Rezaei, Ilghar; Salmanpour, Ava; Zanjani, Masoud Soltani; Biabanifard, Sadegh; Aghaee, Toktam

doi:10.1016/j.diamond.2023.110003

Diamond and Related Materials

2023

DOI: 10.1016/j.diamond.2023.110003

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Multi-functional graphene periodic patterns

Ilghar Rezaei

Ava Salmanpour

Masoud Soltani Zanjani

et al.

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Cited by 20 publications

References 21 publications

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Adjustable graphene disk‐based THz absorber for biomedical sensing: Theoretical description

Soltani Zanjani,

Sadrnia

2024

Engineering Reports

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As a basic building block, the THz wave absorber has intense imaging, sensing, and nondestructive testing applications. There are several methods for tuning THz absorbers, including electricity modulation, light modulation, mechanical tuning, using phase change materials, liquid crystal, flexible materials, MEMS technology, and thermally tuning vanadium dioxide. The choice of tuning method depends on the specific application and the desired performance characteristics of the THz absorber. In this work, we report a theoretical description of mechanically tunable THz absorber based on overlapping periodic arrays of graphene nano‐disks. The basis of this work is based on the movement of a dielectric surface covered on both sides with graphene disks. This surface moves on a fixed plane while the distance between these two surfaces is free space. Also, the fixed surface consists of a relatively thick layer of gold at the bottom, dielectric on it, and graphene disk patterns on the dielectric. Now, by moving the movable surface in the horizontal direction, it is possible to adjust the amount of absorption in different frequencies of the terahertz (THz) band. Additionally, an equivalent RLC circuit model is developed and theoretical results match with simulated data. The proposed mechanically tunable THz absorber can be exploited in various emerging applications such as sensing due to its capability of covering all of the THz gap and beyond with multiple absorption peaks.

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Adjustable graphene disk‐based THz absorber for biomedical sensing: Theoretical description

Soltani Zanjani,

Sadrnia

2024

Engineering Reports

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Manipulating electromagnetic waves on graphene-based optical device with mixer application: equivalent circuit model approach

Khani,

Rezaei,

Soldoozy

et al. 2023

Indian J Phys

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Multi-band THz plasmonic meta-surface absorber based on dual bias graphene disks: bio sensing application

Hoseini,

Dehbovid,

Pahnehkolaei

et al. 2024

Indian J Phys

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Multi-functional graphene periodic patterns

Cited by 20 publications

References 21 publications

Adjustable graphene disk‐based THz absorber for biomedical sensing: Theoretical description

Adjustable graphene disk‐based THz absorber for biomedical sensing: Theoretical description

Manipulating electromagnetic waves on graphene-based optical device with mixer application: equivalent circuit model approach

Multi-band THz plasmonic meta-surface absorber based on dual bias graphene disks: bio sensing application

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