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Finite conductance governs the resonance transmission of thin metal slits at microwave frequencies.

Suckling, JR, Hibbins, AP, Lockyear, MJ, Preist, TW, Sambles, JR and Lawrence, CR (2004) Finite conductance governs the resonance transmission of thin metal slits at microwave frequencies. Phys Rev Lett, 92 (14).

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Abstract

Fabry-Perot-like resonant transmission of microwave radiation through a single subwavelength slit in a thick aluminum plate is quantified for a range of slit widths. Surprisingly, and in contrast to previous studies [e.g., Phys. Rev. Lett. 86, 5601 (2001)]], the resonant frequency exhibits a maximum as a function of slit width, decreasing as the slit width is reduced to less than 2% of the incident wavelength. This result accords with a new model based on coupled surface plasmon theory taking into account the finite conductivity, and hence permittivity, of the metal. This is contrary to a common assumption that metals can be treated as infinitely conducting in this regime.

Item Type: Article
Authors :
NameEmailORCID
Suckling, JRj.suckling@surrey.ac.ukUNSPECIFIED
Hibbins, APUNSPECIFIEDUNSPECIFIED
Lockyear, MJUNSPECIFIEDUNSPECIFIED
Preist, TWUNSPECIFIEDUNSPECIFIED
Sambles, JRUNSPECIFIEDUNSPECIFIED
Lawrence, CRUNSPECIFIEDUNSPECIFIED
Date : 9 April 2004
Identification Number : 10.1103/PhysRevLett.92.147401
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:09
Last Modified : 17 May 2017 15:09
URI: http://epubs.surrey.ac.uk/id/eprint/838129

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