Dielectric constant (ε, epsilon) is one of the basic physical parameters for materials,
determining the response of materials to electromagnetic waves or electrical field; its value …

Abstract Negative permittivity (ε′< 0), considered a supernormal property, has broadened
the range of electromagnetic parameters. It provides a new principle for the design of high …

Carbon-based composites have gained extensive attention as microwave absorbing
materials due to the lighter weight compared with other materials. In this work, Co/C …

Abstract NiFe 2 O 4/polypyrrole (NiFe 2 O 4/PPy) nanocomposites are prepared by a simple
surface-initiated polymerization method and demonstrate negative permittivity in the low …

In this study, DyMn 2 O 5/Ba 3 Mn 2 O 8 nanocomposites were prepared by hydrothermal
route as potential hydrogen storage materials, for the first time. The effect of hydrothermal …

In this work, the CoFe2O4/graphite-polypyrrole (PPy) metacomposites with negative
dielectric constant were prepared by the surface-initiated-polymerization method. The …

One-dimensional wires are the most common building blocks in metamaterials. In this study,
zero-dimensional nanoparticles connected by tunneling networks were used to construct …

Negative permittivity has been widely studied in various metamaterials and percolating
composites, of which the anomalous dielectric behavior was attributed to critical structural …

The flexible metacomposites with tunable negative permittivity have great potential in
wearable cloaks, stretchable sensors, and thin-film capacitors, etc. In this paper, the flexible …

As an important supplement to the metamaterials, negative permittivity in'natural'materials
has attracted increasing attention, while some fundamental regulation mechanisms and …