Wide-angle dual-band absorber based on nanowire-hyperbolic medium

Name: Surawut Wicharn

Organization : Srinkharinwirot University. Faculty of Science

Email : surawutw@g.swu.ac.th

Name: Suwan Plaipichit

Organization : Srinkharinwirot University. Faculty of Science

Email : suwanp@g.swu.ac.th

Name: Prathan Buranasiri

Organization : King Mongkut's Institute of Technology Ladkrabang. Faculty of Science

Email : prathan.bu@kmitl.ac.th

keyword: Electromagnetic absorbers

LCSH: Metamaterials

; Hyperbolic materials

LCSH: Nanowires

; Microwave absorption

Abstract: We proposed a dual-band absorber in the visible regime by using nanowire-hyperbolic medium, which is composed of an array of subwavelength-sized hybrid nanowires immersed in dielectric matrix, as a top layer, silicon dioxide as a middle layer, and gold as a bottom layer. Each nanowire is made by core-shell structure, which has silicon as a core and gold as a shell. We found that the dual-band absorption originated from impedance matching between incident medium impedance and input impedance of the proposed absorber at first- and second-order resonant modes. Furthermore, the absorbance can be controlled by adding or reducing filling factor of hyperbolic medium layer. In addition, the absorption performance of the absorber retains well in wide angles. This dual-band absorber is a good candidate for potential applications such as thermal radiation tailoring and sensitive detection.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2021

Modified: 2025-12-24

Issued: 2025-12-24

บทความ/Article

application/pdf

BibliograpyCitation : In Electrical Engineering Academic Association (Thailand), IEEE Thailand Section, and College of Engineering. Rangsit University. The 2021 9th International Electrical Engineering Congress (iEECON 2021) (P00849). Pathum Thani : Rangsit University, 2021

eng

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