materiały: David R. Smith (physicist)

Evidence: 100 • authority: 72

David R. Smith is an American physicist and professor of electrical and computer engineering at Duke University in North Carolina and visiting professor at Imperial College London. Smith's research focuses on electromagnetic metamaterials, or materials with a negative index of refraction. Smith obtained his B.Sc. and Ph.D. in physics from the University of California, San Diego (UCSD) in 1988 and 1994. In 2000, as a postdoctoral fellow working in the laboratory of Professor Sheldon Schultz at UCSD, Smith and his colleagues discovered the first material that exhibited a negative index of refraction. For his research in metamaterials, Smith, along with four European researchers, was awarded t…

Evidence: 55 • authority: 92

Multi-Physically Programmable Tubular Origami Metamaterials: Exploitable Nexus of Geometry, Folding Mechanics and Stimuli-Responsive Physics.. Metamaterials and metastructures developed based on tubular origami-inspired structural forms can leverage the convolution of geometry, crease mechanics and stimuli-responsive physics to provide unique mechanical and functional properties, including geometric efficiency and compactness, deployability and reconfigurability, structural integration ability in complex shapes, stiffness and strength modulation, constitutive programming and deformation mode coupling, high specific energy absorption, multi-stability, and programmable dynamic behavior, leadi…

Evidence: 46 • authority: 72

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 invisible. Metamaterial cloaking, based on transformation optics, describes the process of shielding something from view by controlling electromagnetic radiation. Objects in the defined location are still present, but incident waves are guided around them without being affected by the object itself.

Evidence: 41 • authority: 80

Postharvest quality properties of potential tropical fruits related to their unique structural characters

Evidence: 36 • authority: 80

Radiation-dynamic effects. Potential for producing condensed media with unique properties and structural states

Evidence: 32 • authority: 80

Smart Nanotransformers with Unique Enzyme-Inducible Structural Changes and Drug Release Properties

Evidence: 32 • authority: 80

Two-Dimensional C4N Global Minima: Unique Structural Topologies and Nanoelectronic Properties

Evidence: 32 • authority: 72

A superlens, or super lens, is a lens which uses metamaterials to achieve super-resolution imaging and go beyond the diffraction limit. The diffraction limit is a feature of conventional lenses and microscopes that limits the fineness of their image resolution depending on the radiation wavelength and the numerical aperture (NA) of the objective lens. Many lens designs have been proposed that go beyond the diffraction limit in some way, but constraints and obstacles face each of them.