Perturbed frequency-selective surfaces fabricated on large thin polymer membranes for multiband infrared applications

Juan-Jose Sanz-Fernandez, George Goussetis, Rebecca Cheung

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The design, fabrication, and characterization of single-screen perturbed frequency-selective surfaces (FSS) at infrared frequencies for single and multiband applications are reported. Single-band FSS based on parallel strips have been perturbed by decreasing the length of every second strip within the array in order to achieve dual band-stop responses. The same principle has been extended to design FSS exhibiting tri- and quadreflection bands. In addition, strip FSSs have been perturbed by replacing every second strip for a metallic ring, resulting in dual-band filters with different polarization responses of the bands. These designs have been fabricated on large thin polyimide membranes using sacrificial silicon wafers. An oxide interlayer between the sacrificial silicon wafer and the polyimide membrane is employed to stop the silicon etching and is wet etched subsequently by a solution of ammonium fluoride and acetic acid that does not attack either the polyimide membrane or the aluminium FSS elements. Fourier transform infrared spectroscopy measurements are presented to validate the predicted responses of the fabricated prototypes. © 2009 American Vacuum Society.

Original languageEnglish
Pages (from-to)3169-3174
Number of pages6
JournalJournal Vacuum Science and Technology B
Volume27
Issue number6
DOIs
Publication statusPublished - Nov 2009

Keywords

  • design
  • membranes
  • polymer films
  • frequency selective surfaces
  • infrared spectra
  • Fourier transform spectra

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