A frequency selective surface with nano square ring resonators for enhancing banknote security

Conference proceedings article

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Publication Details

Author list: Sripradit A., Theeradejvanichkul T.

Publisher: Hindawi

Publication year: 2017

Volume number: 2017-January

Start page: 677

End page: 678

Number of pages: 2

ISBN: 9781538632840

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042236928&doi=10.1109%2fAPUSNCURSINRSM.2017.8072381&partnerID=40&md5=818a47655982bb354efed92ab29df1df

Languages: English-Great Britain (EN-GB)

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Abstract

This paper presents a frequency selective surface designed with nano square ring resonators (SRRs) as a security feature on banknote. Each SRR is in nanoscale and operates in the wavelength of 400-700 nm. SRR is made of aluminum on polyethylene terephthalate (PET) substrate and top coating. Simulations are performed on 3 SRR models to study the effects of physical geometrical changes on the reflection (|S11|) and transmission (|S21|) coefficients. The lowest |S11| is-25.91 dB achieved by model C, at incident wavelength of 750 nm and |S21| maximum of-3.355 dB at incident wavelength of 705.88 nm. When a frequency selective surface with SRRs is incorporated onto a banknote, the front and rear sides can display colors differently under white light, as shown in the results. ฉ 2017 IEEE.

Keywords

Banknote security, Counterfeit, Finite element analysis method, Ring resonator