anisotropic crystal

crystal, anisotropic 

A crystal that exhibits birefringence (double refraction).
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Via smart nanocrystal design, more specifically by exploiting novel synthesis methods that include asymmetric in-plane confinement potentials, anisotropic crystal structures, and lattice strain-induced band structure modifications in core/shell heterostructures, the nanomaterials will be shaped toward efficient multiexciton and stimulated emission, as well as stable, blinking-free single-photon emission.
For instance in the x-z plane, the propagation inside an anisotropic crystal for the TM case is described by
Besides the capacity of the instrument for high accuracy, this was more importantly due to the fact that only a single, arbitrarily oriented, polished face suffices for the measurement of all three of the principal refractive indices of an anisotropic crystal.
In the case of anisotropic crystals, principal indices of refraction to be measured must be parallel to the edge or in the symmetry plane of the prism.
For measuring anisotropic crystals, the sample must be rotated about an axis perpendicular to the reflecting face, and both the angle of rotation about this axis and the corresponding value of the critical angle have to be monitored.
It also allows them to determine if their sample is crystalline or partially crystalline based on the birefringence of anisotropic crystals within the frozen matrix.
Among the topics are two-dimensional problems and waveguides, spherical waves and applications, spatial dispersion and warm plasma, optical waves in anisotropic crystals, and approximate analytical methods based on perturbation and variational techniques.
Topics include optical microscopy and spectroscopy of single molecules, optical properties of single conjugated polymer chains (polydiacetylenes), morphology-correlated photophysics in organic semiconductor thin films by confocal laser microscopy and spectroscopy, spectroscopy of long-lived photoexcitations in pi- conjugated systems, charge transport in disordered organic semiconductors, probing organic semiconductors with terahertz pulses, macroscopic polarization and exciton properties for strong exciton polaritons in anisotropic crystals, sub-5 fs spectroscopy of polydiacetylene, and ultrafast optoelectronic probing of excited states in low-dimensional carbon-based pi-conjugated materials.
Just as a sphere is the equilibriumshape of a single soap bubble, there is an analogous shape for anisotropic crystals.