They are composed of a periodic lattice
of physical features that interact with an applied wave to produce new and useful phenomena including negative refractive index [2-4], dispersive properties [5-11], electromagnetic band gaps [12-15], anisotropy [16-27], and more.
An EBG waveguide can be created by introducing a 1-D perturbation/defect in the periodic lattice
of an EBG structure.
Abstract: A passive, low-cost device built with a textured surface, consisting of a periodic lattice
of metal patches, embedded in an inhomogeneous parallel-plate waveguide is proposed.
Another grid suitable for length estimation is composed of identical spheres centered in points forming periodic lattice
Keynote talks were given on topics that include an overview of the mechanical properties of foams and periodic lattice
materials, physics of polymer foams, and the role of rheology in foaming polymers.
A photonic crystal is a periodic lattice
of dielectric media that prohibits light waves of specific wavelengths from propagating in certain directions.
Once the diffraction peaks from single crystals (or lines from powders) have been indexed in six dimensions, or in three with six basis vectors, and their corrected intensities measured, the diffraction pattern can be considered either on a three-dimensional reciprocal quasilattice or on a six-dimensional periodic lattice
When you have atoms arranged in a periodic lattice
, electrons can flow very easily as they essentially know what to expect," Agarwal said.
This approach can be used to build periodic lattices
from optically active particles, such as gold, silver and any other material that can be modified with DNA, with extraordinary nanoscale precision," said Mirkin, director of Northwestern's International Institute for Nanotechnology.
Wave propagation in two-dimensional periodic lattices
, The Journal of the Acoustical Society of America 119(4): 1995-2005.