metamaaterjale

Metamaterials are engineered materials that possess properties not found in naturally occurring substances. These properties arise not from the material's composition but from its designed structure. Typically, metamaterials are made up of repeating patterns of small structures, often called unit cells or meta-atoms. The size and arrangement of these structures are critical, usually being smaller than the wavelength of the phenomenon they interact with, such as light or sound.

By precisely controlling the geometry and arrangement of these sub-wavelength building blocks, metamaterials can manipulate waves in unprecedented ways. This includes phenomena like negative refraction, where light bends in the opposite direction to what is normally observed, and perfect absorption, where all incident energy is captured. They can also exhibit properties such as cloaking, rendering objects invisible to certain wavelengths.

The development of metamaterials is a multidisciplinary field, drawing on expertise in physics, electrical engineering, materials science, and nanotechnology. Research in metamaterials has opened up possibilities for a wide range of applications, including advanced antennas, improved sensors, novel optical devices, and even potential solutions for acoustic or seismic wave control. The ability to tailor material properties at the sub-wavelength scale is the defining characteristic and the primary driver of innovation in this field.