Analysis of solid conductors by means of Voronoi-Dirichlet partition

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Zinc oxide single crystals: Temperature and radiation effect on firmness and plasticity

Mechanical properties of bulk ZnO single crystals are studied depending on crystallographic orientation, temperature and radiation. The shapes of the indenter prints and dislocation rosettes were analyzed for the faces of monohedron (0001), hexagonal prisms {10 $\overline{1}$0}, {11 $\overline{2}$0}, and pyramid {10 $\overline{1}$1}. For {$\bar{1}$0 $\overline{1}$0} plane, the fracture toughness coefficient K$_{1\rm C}$ was found to be K$_{1\rm C}{\sim}$0.09 MPa m$^{1/2}$, Young modulus E = 47.7 GPa, microhardness H = 1.7 GPa, coefficient of surface energy of destruction $\gamma$ = 0.085 J/m$^{2}$. For (0001) face H = 4.2 GPa

Room temperature synthesis and optical properties of small diameter (5 nm) ZnO nanorod arrays

We report a simple wet-chemical synthesis of similar to 5 nm diameter ZnO nanorod arrays at room temperature (20 degrees C) and normal atmospheric pressure (1 atm) and their optical properties. They were single crystalline in nature, and grew in the [001] direction. These small diameter ZnO nanorod arrays can also be synthesized at 0 degrees C. Control experiments were also conducted. On the basis of the results, we propose a mechanism for the spontaneous growth of the small diameter ZnO structures. The optical properties of the 5 nm diameter ZnO nanorod arrays synthesized using this method were probed by UV-Visible diffuse reflectance spectroscopy. A clear blue-shift, relative to the absorption band from 50 nm diameter ZnO nanorod arrays, was attributed to the quantum confinement effects caused by the small nanocrystal size in the 5 nm diameter ZnO nanorodsclose181