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A photonic metamaterial (PM), also known as an optical metamaterial, is a type of electromagnetic metamaterial, that interacts with light, covering terahertz , infrared (IR) or visible wavelengths. [1] The materials employ a periodic, cellular structure.
Metamaterial cloaking is the usage of metamaterials in an invisibility cloak. This is accomplished by manipulating the paths traversed by light through a novel optical material. Metamaterials direct and control the propagation and transmission of specified parts of the light spectrum and demonstrate the potential to render an object seemingly ...
Microwave frequency metamaterials are usually constructed as arrays of electrically conductive elements (such as loops of wire) that have suitable inductive and capacitive characteristics. Many microwave metamaterials use split-ring resonators. [5] [6] Photonic metamaterials are structured on the nanometer scale and manipulate light at optical ...
Research and development in PDRCevolved rapidly in the 2010s with the discovery of the ability to suppress solar heating using photonic metamaterials, which widely expanded research and development in the field. [4] [29] In 2024, Nissan introduced a paint that lowers car interior temperatures by up to 21 °F in direct sunlight.
The first electromagnetic cloaking device was produced in 2006, using gradient-index metamaterials.This has led to the burgeoning field of transformation optics (and now transformation acoustics), where the propagation of waves is precisely manipulated by controlling the behaviour of the material through which the light (sound) is travelling.
The uniplanar compact photonic-bandgap (UC-PBG) is proposed, simulated, and then constructed in the lab to overcome elucidated limitations of planar circuit technology. Like photonic bandgap structures it is etched into the ground plane of the microstrip line. The geometry is square metal pads.
Transformation optics is a branch of optics which applies metamaterials to produce spatial variations, derived from coordinate transformations, which can direct chosen bandwidths of electromagnetic radiation.
Negative index metamaterials; Negative resistance; Negative temperature; Neon lighting; Neon sign; Neutral beam injection; Neutron generator; Neutron source; Neutron star spin-up; New Horizons, Plasma and high energy particle spectrometer suite (PAM) Nitrogen–phosphorus detector; Nonequilibrium Gas and Plasma Dynamics Laboratory; Non-line-of ...