normal 0 false false false en-us x-none ar-sa dear editor i read with interest the study conducted by karrari and colleagues regarding “iranian crystal a misunderstanding of the crystal-meth” published in your journal. [ 1 ] in this study, the authors have explained that the pattern of substances of abuse is varied in different parts of the world , also in iran, and the main ingredient of stree...

The design of highly flexible framework materials requires organic linkers, whereas inorganic materials are more robust but inflexible. Here, by using linkable inorganic rings made up of tungsten oxide (P8W48O184) building blocks, we synthesized an inorganic single crystal material that can undergo at least eight different crystal-to-crystal transformations, with gigantic crystal volume contrac...

The current research was focused on synthesizing potassium sodium niobate (KNN) piezoelectric ceramics for the system (K0.48Na0.52) NbO3   by high energy ball milling process for 15h at the speed of 300 rpm.  The blended nano-crystalline powder was calcined in conventional box furnace at 700oC, 800oC and 900oC for duration of 5h, 7h and 10h.  Diffraction result of calcine powder confirmed the f...

In transformation-induced plasticity (TRIP) steel, the strain-induced martensitic transformation (SIMT) has a close relationship with shear band formation. At small length scale such as that of crystal, explicit analysis structure formed microstructure is quite important for an adequate understanding SIMT. Here, study on microstructures by SIMT, related to formation in both single and polycryst...

The thermosalient effect (crystal jumping on heating) attracts much attention as both an intriguing academic phenomenon and in relation to its potential for the development of molecular actuators but its mechanism remains unclear. 1,2,4,5-Tetrabromobenzene (TBB) is one of the most extensively studied thermosalient compounds that has been shown previously to undergo a phase transition on heating...

Crystal unbending, the process that aims to recover a perfect crystal from experimental data, is one of the more important steps in electron crystallography image processing. The unbending process involves three steps: estimation of the unit cell displacements from their ideal positions, extension of the deformation field to the whole image and transformation of the image in order to recover an...

Single crystal ZnO microrods are deposited on the surface of Zn plate through corrosion of Zn plate by H2O2 which is a green neutral reagent and easy to transform to H2O and O2. The structure and morphology of the obtained ZnO microrods were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and electron diffraction. A thermodynamics mechanism was...

In a single-crystal-to-single-crystal (SCSC) transformation, a preformed three-dimensional coordination polymer,[Ni3(oba)2(bpe)2(SO4)(H2O)4]· H2O (H2oba = 4,4'-oxydibenzoic acid; bpe = (E)-1,2-di(pyridin-4-yl)ethane) (1), was shown to undergo a [2+2] cycloaddition reaction upon exposure to UV irradiation. The kinetics of this reaction were followed by taking "snapshots" of the solid state trans...