Nader Engheta

Jan 20, 2025 | nature.com | Brian Edwards |Nader Engheta

AbstractThe ability to perform mathematical computations using metastructures is an emergent paradigm that carries the potential of wave-based analog computing to the realm of near-speed-of-light, low-loss, compact devices. We theoretically introduce and experimentally verify the concept of a reconfigurable metastructure that performs analog complex mathematical computations using electromagnetic waves.

Mar 23, 2023 | science.org | Huili Zhang |Qianqian Yang |Ibukun Akinrinade |Nader Engheta

For optics, like semiconductor heterostructures, the interfaces and inhomogeneities in materials can manipulate optical waves and fields. Numerous photonic devices and components—for example, waveguides, lenses, and cavities—function owing to the presence of such interfaces and material spatial variations. Such parameter inhomogeneity is generally in three dimensions of space (spatial inhomogeneities). But what if the dimension of “time” could be introduced into material parameters?