Subvåglängds

Subvåglängds, also known as subwavelength structures, are microscopic features that are smaller than the wavelength of the light they interact with. These structures are used in various optical and photonic applications to manipulate light in ways that are not possible with conventional optics. Subvåglängds structures can be found in a wide range of technologies, including metamaterials, plasmonics, and photonic crystals.

Metamaterials are artificial materials that are designed to have properties not found in nature. They are made up of subvåglängds structures that can manipulate light in unusual ways, such as bending light at negative angles or creating invisibility cloaks. Plasmonics, on the other hand, uses subvåglängds structures to create plasmons, which are quantum mechanical oscillations of electrons that can be used to manipulate light on the nanoscale.

Photonic crystals are periodic structures that can manipulate light in unique ways. They are made up of subvåglängds structures that can create bandgaps, which are ranges of frequencies where light cannot propagate. This property can be used to create lasers, filters, and other optical devices.

Subvåglängds structures are also used in nanophotonics, which is the study of light on the nanoscale. Nanophotonics uses subvåglängds structures to create devices that can manipulate light in ways that are not possible with conventional optics. These devices can be used in a wide range of applications, including sensing, imaging, and communication.

In summary, subvåglängds structures are microscopic features that are smaller than the wavelength of the light they interact with. They are used in various optical and photonic applications to manipulate light in ways that are not possible with conventional optics. Subvåglängds structures can be found in metamaterials, plasmonics, photonic crystals, and nanophotonics.