Laminated composites containing ENMs layers for high permittivity dielectrics. Mechanism of dielectric enhancement in bilayer composites with positive-k and negative-k layers (a), Schematic illustration of the bilayer composites (b), Frequency dependence of permittivity of the single layers and bilayer composites (c–e)[113] Copyright © 2017, American Chemical Society;Sandwich-structured composites with positive-k, negative-k, positive-k layers (f) [114] Copyright © 2017, The Royal Society of Chemistry; Multilayered composites containing positive-k, negative-k, and insulator layers (g) [115] Copyright © 2019, American Chemical Society.