Recently, artificially constructed metamaterials have become of considerable interest,
because these materials can exhibit electromagnetic characteristics unlike those of any …

The imaging resolution of conventional lenses is limited by diffraction. Artificially engineered
metamaterials now offer the possibility of building a superlens that overcomes this limit. We …

Using the freedom of design that metamaterials provide, we show how electromagnetic
fields can be redirected at will and propose a design strategy. The conserved fields—electric …

Recently, higher-order topological phases that do not obey the usual bulk-edge
correspondence principle have been introduced in electronic insulators and brought into …

Reflection and refraction of waves occur at the interface between two different media. These
two fundamental interfacial wave phenomena form the basis of fabricating various wave …

Negative refraction is currently achieved by driving the magnetic permeability and electrical
permittivity simultaneously negative, thus requiring two separate resonances in the …

Metal-based negative refractive-index materials have been extensively studied in the
microwave region. However, negative-index metamaterials have not been realized at near …

Negative refraction provides a platform to manipulate mid-infrared and terahertz radiation for
molecular sensing and thermal emission applications. However, its implementation based …

Negative refraction of elastic waves has been studied and experimentally demonstrated in
three-and two-dimensional phononic crystals, but Bragg scattering is impractical for low …

Negative refraction in metamaterials has generated great excitement in the scientific
community. Although negative refraction has been realized in microwave and infrared by …