Materials Literature
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Uedaite-(Ce), ideally Mn 2+ CeAl 2 Fe(Si 2 O 7 )(SiO 4 )O(OH), occurs in granite at Shodoshima Island in Seto Inland sea, Kagawa Prefecture, Japan. It is monoclinic, P 2 1 / m , a = 8.939(8) A, b = 5.742(4) A, c = 10.187(8) A, β = 115.10(6)°, V = 473.5(6) A 3 , Z = 2. The four strongest lines in the powder XRD pattern…
We report the light-induced incandescence of single-walled carbon nanotubes excited by weak visible and infrared laser beams. The phenomenon does not occur on bulk graphite and amorphous carbon under the same conditions. The intensity of the incandescence is exponentially proportional to the incident laser power and t…
Three‐phase (triplex) ceramic composites with improved thermal stabilities resulting from minimized grain growth due to extended grain separations are introduced. Al 2 O 3 , yttrium aluminum garnet (YAG, Y 3 Al 5 O 12 ), and ZrO 2 were chemically compatible to make a stable triplex composite. Another stable composite…
Abstract Single crystals of ferroelectric succinic acid (SA) with very high degree of transparency were grown from aqueous solution by slow evaporation technique. Single crystal X‐ray diffraction analysis reveals that the crystal belongs to monoclinic system with the space group P2 1 /c. Some physical parameters have…
In the view of designing functional nanoparticles, the encapsulation of 1,4,7,10-tetraazacyclododecane (cyclen) within silica nanoparticles using the Stöber process was studied. In the presence of cyclen and tetraethoxysilane (TEOS), silica particles exhibiting an unusual core-shell structure were obtained. On then ba…
A well-ordered, self-organized dot-row structure appears after adsorption of S on Ag(111) at 200 K. This dot-row motif, which exhibits fixed spacing between dots within rows, is present over a wide range of coverage. The dots are probably Ag 3 S 3 clusters with adsorbed S in the spaces between dots. Dynamic rearrangem…
Metallmixtur: Die Synthese des ersten gemischten Alkalimetallborhydrids wird vorgestellt: Die Kristallstruktur von LiK(BH4)2 (siehe Bild; K pink, Li gelb, B grün, H grau) ähnelt derjenigen von LiBH4, und der thermische Zersetzungspunkt liegt zwischen den Werten für LiBH4 und KBH4. Mithilfe der beschriebenen Route lass…
This paper definitely reveals that LaPO 4 :Ce 3+ , Tb 3+ (LAP) nanophosphors prepared by normal hydrothermal method suffer significant loss of luminescence due to the oxidation of Ce 3+ –Ce 4+ at hydrothermal stage. To effectively protect Ce 3+ from oxidation, a reductive hydrothermal process using hydrazine hydrate a…
We resolve the structure of a $c(2\ifmmode\times\else\texttimes\fi{}2)$ reconstruction of the rutile ${\mathrm{TiO}}_{2}$ (100) surface using a combination of transmission electron diffraction, direct methods analysis, and density functional theory. The surface structure contains an ordered array of subsurface oxygen…
Poly(ethylene oxide) (PEO) adsorption on colloidal silica particles was studied by small-angle neutron scattering under the core-contrast-matching condition. The volume fraction profile of the adsorbed layer was derived by modeling the average layer scattering term. It was found that, with increasing colloid concentra…
Abstract Nonlinear optical single crystals of YCOB with good optical quality were grown by the flux technique for the first time. Polycrystalline YCOB samples were synthesized by solid state reaction method. The thermal analysis of the sample was performed with lithium carbonate flux in different weight proportions an…
Frequency shifts and nuclear relaxations of $^{13}\mathrm{C}$ NMR of the metal-insulator alternating layered material $(\mathrm{Me}\text{\ensuremath{-}}3,5\text{\ensuremath{-}}\mathrm{DIP})[\mathrm{Ni}(\mathrm{dmit}{)}_{2}{]}_{2}$, are presented. The NMR absorption lines originating from metallic and insulating layers…
We have experimentally investigated the charge density distribution and the electrostatic potential for a charge-ordering doped manganite, ${\mathrm{Nd}}_{1∕2}{\mathrm{Sr}}_{1∕2}{\mathrm{MnO}}_{3}$. In the charge-ordered state, we observed a zigzag pattern of the charge density within the (010) plane. Judging from the…
Abstract The effect of hydrophobic modification and regeneration of Shirasu porous glass (SPG) membranes was systematically investigated on the monodispersity of emulsions. The results showed that the hydrophobic modification and regeneration of SPG membranes had little influence on the monodispersity of emulsions, no…
Abstract The heterogeneous catalytic wet peroxide oxidation (CWPO), involving total oxidation of organic compounds to CO 2 and H 2 O is a possible path for the treatment of toxic and bio‐refractory wastewater streams. The aim of this work was to synthesize and characterize three Cu/ZSM5 catalysts prepared by direct hy…
This article describes the first surface-initiated polymerization of isocyanide monomers onto various surfaces in a controlled manner. Brushes up to 200 nm could be easily obtained within 3 h of polymerization, and the polymer growth was studied as a function of reaction time, monomer concentration, and growth conditi…
Abstract Two N ‐salicylidene‐ N ′‐acylhydrazines tridentate ligands containing heterocycles were prepared and utilized for the synthesis of mononuclear acentric complexes of Cu II and Pd II and pyridine serves as an additional ligand (ML x Py, M = metal, L x = ligand). Characterization also includes single‐crystal X‐r…
A two-dimensional liquid crystal (LC) laser array has been demonstrated by photopumping a single LC sample using a lenslet array consisting of plano-convex microlenses. A 5 x 5 array of LC lasers (displaying evidence of mutual coherence) spaced by 1 mm inactive regions has been generated, which could be combined to yi…
Metamagnetic transition was observed in low magnetic field for La0.7Ca0.3MnO3−δ lanthanum manganite prepared by solid-state technology. Magnetization shape causes giant low field magnetocaloric effect at Curie temperature TC=242K. Magnetic entropy changes ΔSm, deduced with isothermal magnetization curves, are equal to…
Optical and field emission (FE) properties of aligned single-crystalline ZnO nanorods, grown on aluminium substrate at 530 °C by the non-catalytic thermal evaporation process, have been examined. Raman-scattering and room-temperature PL spectra exhibit a strong and sharp optical phonon E2 mode at 437 cm−1 and a strong…