: optical separate spatial dark and bright soliton pairs in steady-state case in one dimension, for a series circuit consisting of two-photon photorefractive (pr) crystal are investigated. each crystal can be supported the spatial soliton, and at least one must be photovoltaic. the two solitons are known collectively as separate spatial soliton pairs with dark–dark, bright–dark and bright–brigh...

We discuss two scenarios of emergent gravity. In one them the quantum vacuum is considered as superplastic crystal, and effective gravity describes dynamical elastic deformations this crystal. other gravitational tetrads emerge bilinear form fermionic fields. spite essentially different mechanisms gravity, these have important common property: metric field has dimension inverse square length [g...

Single crystal of Thiourea added L-Histidine (TULH) have been grown by slow evaporation solution growth technique. Good optical quality single crystal of dimension up to 34x5x8mm 3 have been obtained. To identify the morphology and structure, the as grown crystals were subjected to single crystal and powder x-ray diffraction analysis. The different mode of vibrations present in the crystal was ...

Crystal morphology is a critical determinant of the physical properties of crystalline materials. Face-specific growth rates can be used to compute dynamic and steady-state morphologies of crystals growing in a specific environment. The synthesis of crystals with desired morphologies requires a framework to guide the selection of environmental conditions. The framework developed here utilizes c...

We demonstrate the existence of self-consistent Bloch modes in resonant nonlinear photonic crystals with a complex, intensity-dependent, and frequency-dependent dielectric function. Such a dielectric response may arise by "doping" the photonic crystal with resonant quantum dots, atomic impurities, or other two-level light emitters. These exact solutions of the nonlinear electromagnetic wave equ...

Lead magnesium niobate—lead titanate (PMN-PT) single crystals have been successfully commercialized in medical ultrasound imaging. The superior properties of PMN-PT crystals over the legacy piezoelectric ceramics lead zirconate titanate (PZT) enabled ultrasound transducers with enhanced imaging (broad bandwidth and improved sensitivity). To obtain high quality and relatively low cost single cry...

Crystal lattices are in nite periodic graphs that occur naturally in a variety of geometries and which are of fundamental importance in polymer science. Discrete models of protein folding use crystal lattices to de ne the space of protein conformations. Because various crystal lattices provide discretizations of the same physical phenomenon, it is reasonable to expect that there will exist \inv...

Modified quantum algebra Ũq(g) is an algebra which is ’modified’ the Cartan part of the underlying quantum algebra Uq(g) as in (3.1) and (3.2). Modified quantum algebra Ũq(g) holds the remarkable property that modified quantum algebra Ũq(g) affords the commutative two crystal structures. The first one is the usual crystal structure, which was found by Lusztig ([8]). Another crystal structure wa...

Ericksen Leslie equation describes the time evolution of a spin vector and velocity in liquid crystals. This equation has following property: (i) the length preserving of a spin vector, (ii) the energy conservation or the dissipation property, (iii) the incompressibility of a velocity vector. In physics papers, the fourth order Runge-Kutta’s method is used for numerical analysis of some types o...

Sr6Nb10O30–Nb2O5 nanocomposite was synthesized in 2M NaOH aqueous solution. A stoichiometric 1:1 Sr:Nb molar ratio hydrothermal method at 120°C was used to synthesize this nanocomposite. Sr(NO3)2 and Nb2O5 were used as raw materials. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique. It was found that Sr6Nb10O30 was crystallized in tetragonal crystal ...