Inkjet-patterned porous split-ring resonator and its performance study on metamaterial application

Abstract

This work demonstrated an inkjet-printed split-ring resonator (SRR) on a polymeric substrate to support the metamaterial application, particularly an invisibility cloak. Comprehensive simulation, experiment, and analysis were conducted in this work to understand the variation tendencies of the electromagnetic (EM) response of the SRR array from the contribution of various material properties and environmental contributions. Results suggested that although the inkjet-printed SRR was composed of porous metallic nanoparticles, it was capable of coupling the EM energy with a linear relationship between the effective metal thickness and the EM intensity. Additional studies indicated that simulation would not completely reflect the SRR performance in reality because of the limited function on array expansion. Evaluations also suggested a minimum SRR repetition in simulation to alleviate the unpredictable energy loss from the limited array size in facilitated prototyping by inkjet printing.

Optimization of plotter printing for sub-terahertz metallic metasurfaces fabrication on ultra-thin substrate

“…However, for the fabrication of metallic metasurfaces, two major issues may limit the use of such a technique: on the one hand, the spatial resolution of the printing system fixes the upper accessible frequency and on the other hand, the metal thickness and conductivity -compared with skin depth-sets the lower frequency limit [33]. In recent years, the main systems used are inkjet printers developed for printed electronics [34][35][36][37]. These systems use the pressure exerted by the piezoelectric element on the ink contained in a narrow channel to overcome capillary forces, causing the fluid to be ejected onto a surface in the form of droplets.…”