IDEAS home Printed from https://ideas.repec.org/a/taf/tewaxx/v36y2022i1p131-140.html
   My bibliography  Save this article

Design of a tunable nano sensor based on terahertz graphene-based absorbers

Author

Listed:
  • Shahreyar Sahraeian
  • Roozbeh Negahdari
  • Farzin Emami

Abstract

In this paper, tunable and efficient absorbers are proposed based on graphene–metal nano structures. The designed structures are consisted of multi layers of graphene (ring- and plate-shaped) and gold (5*5 cells) on the background of silica. By introducing different ring-shaped graphene layers (one, two or three), the near unity absorption coefficient can be achieved. The effects of different parameters like the distance, radius and chemical potential (h1, Rin1, EfR1, h2, Rin2, EfR2, h3, Rin3, EfR3) on the absorption spectrum (wavelength and value) are also considered. The best resonant peak (near unity) is obtained for the structure with three ring-shaped graphene layers. The final proposed structure (with three rings) can be utilized as an effective sensor for detecting materials with different refractive indices (from 1. to 1.5) with sensitivity of 100 (nm/RIU). The designed structure can be applied as a strong absorber or sensitive sensor in nano-optical systems.

Suggested Citation

  • Shahreyar Sahraeian & Roozbeh Negahdari & Farzin Emami, 2022. "Design of a tunable nano sensor based on terahertz graphene-based absorbers," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 36(1), pages 131-140, January.
    • Handle: RePEc:taf:tewaxx:v:36:y:2022:i:1:p:131-140
    DOI: 10.1080/09205071.2021.1958382
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1080/09205071.2021.1958382
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1080/09205071.2021.1958382?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:taf:tewaxx:v:36:y:2022:i:1:p:131-140. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Chris Longhurst (email available below). General contact details of provider: http://www.tandfonline.com/tewa .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.