Polypropylene-substrate-based SRR- and CSRR- metasurfaces for submillimeter waves

Abstract

In this paper it is presented the fabrication of low loss millimeter wave metamaterials based on patterning on polypropylene substrates by conventional contact photolitography. We study numerically and experimentally the transmission and reflection properties of two dimensional arrays of split ring resonators (SRRs), or metasurfaces, and their complementary structure (CSRRs) for co- and cross-polarization excitations up to submillimeter frequencies under normal incidence conditions. The obtained results suggest the possibility of scaling them at terahertz frequencies based on this substrate where other lossy substrates degrade the resonators quality. Left-handed metamaterials derived from these SRRs and CSRRs metasurfaces could be feasible.

From Rejection to Transmission With Stacked Arrays of Split Ring Resonators

“…In terms of material parameters, and even if that may be however questionable for a metasurface, it would correspond to a 'negative permittivity' effect. This is also the basis for considering this surface being of a capacitive type, opposed to or dual of the inductive type, with the main difference of being transparent at low frequencies (capacitive) instead of opaque (inductive) [8].…”

Transmission Properties of Stacked SRR Metasurfaces in Free Space

“…This first resonance vanishes when the electric field is along x-axis, leaving only the dynamic resonances (Figure 2 polarization do not match in frequency with those observed for horizontal polarization. This can be explained by the different nature of current circulation at each resonance [21]. It anticipates that the first and second resonance for vertical polarization corresponds essentially to the excitation of both outer and inner ring, but with different direction: the induced current density circulates at each ring in the same [17] and opposite (see Figure 3(a)) direction for the first and second resonance, respectively.…”

Manipulation of terahertz radiation using metamaterials

“…These not only provide mechanical support, but can also introduce electromagnetic functionality. Recently, there has been increasing interest in THz metamaterials on polymer and silk-based flexible films for biomedical applications [40][41][42][43][44].…”