Jing, "Asymmetric acoustic transmission through near-zero-index and gradient-index
metasurfaces," Applied Physics Letters, vol.
Cui, "Experiments on high-performance beam-scanning antennas made of gradient-index
metamaterials," Applied Physics Letters, vol.
They cover effective medium theory, artificial particles: "man-made atoms" or "meta-atoms," homogeneous metamaterials: super crystals, random metamaterials: super noncrystals, inhomogeneous metamaterials: super quasicrystals, gradient-index
inhomogeneous metamaterials, nearly isotropic inhomogeneous metamaterials, and anisotropic inhomogeneous metamaterials.
Made by graded photonic crystal, the gradient-index
lens can lead to high gain and low sidelobes with this lens placed inside a horn antenna .
antireflection coatings," Optics Letters, vol.
antireflection coatings, Optics Letters 8(11): 584586.
The cloak, designed by Cheng Sun, assistant professor of mechanical engineering at Northwestern's McCormick School of Engineering and Applied Science, uses micro fabricated gradient-index
materials to manipulate the reflection and refraction of light.
Our patented endoGRINS[R] gradient-index
lenses are built into our exclusive line of Hawkeye[R] Rigid Precision Borescopes.
Among the systems covered over the course of 43 chapters are telephoto lenses, eyepieces, afocal optical systems, periscope systems, enlarging and copying lenses, projection lenses, wedge-plate and rotary-prism cameras, optically and mechanically compensated zoom lenses, copy lenses with variable magnification, gradient-index
lenses, spectrographic systems, and diffractive systems.
This employs small optical components such as gradient-index
lenses and mirrors to reflect light around the bend.
It consists of a small laser, a gradient-index
(GRIN) lens, a beamsplitter, and a reference element.