Materials Literature
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Non-doped as well as titanium and lutetium doped zirconia (ZrO2) materials were synthesized via the sol-gel method and structurally characterized with X-ray powder diffraction. The addition of Ti in the zirconia lattice does not change the crystalline structure whilst the Lu doping introduces a small fraction of the t…
In addition to enhancement of the results near the point of application of a concentrated load in the vicinity of nano-size defects, capturing surface effects in small structures, in the framework of second strain gradient elasticity is of particular interest. In this framework, sixteen additional material constants a…
In this paper, we study the kinetics and energetics involved in the nucleation and propagation of and twinning dislocations (TDs) in Mg using atomistic simulations. We demonstrate that for both twins, a 2-layer TD of mixed character nucleates as a result of the interaction of a basal dislocation with a twin boundary.…
Unlike Mn doped quantum dots (d-dots), the emission color of Cu dopant in Cu d-dots is dependent on the nature, size, and composition of host nanocrystals (NCs). The tunable Cu dopant emission has been achieved via tuning the particle size of host NCs in previous reports. In this paper, for the first time we doped Cu…
Plastic deformation in polycrystalline materials involves a complex interaction of dislocations with defects in the lattice. The geometrically necessary component of the dislocation density can be quantified to some extent using data obtained from automated electron backscatter diffraction scans over planar regions or…
In this work, we examine the high-pressure behavior of superhard material candidate WB${}_{4}$ using high-pressure synchrotron x-ray diffraction in a diamond anvil cell up to 58.4 GPa. The zero-pressure bulk modulus, ${K}_{0}$, obtained from fitting the pressure-volume data using the second-order Birch-Murnaghan equat…
Luminescent cyclometalated iridium complexes based on pyridyl appended dipyrrin ligands were prepared and characterized both in the solid state and in solution. The functionalization of the peripheral pyridyl moiety causes dramatic changes on the emission properties of both mono- and hetero- binuclear complexes. A det…
Abstract Boehmite nanoparticles (γ‐AlOOH) have been successfully synthesized by the hydrothermal method at 180 °C using aluminum nitrate, Al(NO 3 ) 3 ·9H 2 O, as the aluminum source and sodium metaborate, NaBO 2 ·4H 2 O, as controlling agent. The size and morphology of boehmite nanoparticles could be controlled by adj…
The mechanism of core/shell formation during sintering in B a T i O 3 ‐based systems was studied in ( M g, Y )‐doped B a T i O 3 . The effect of ball milling time on core size and shell thickness was first observed. The core size was similar irrespective of ball milling time whereas the shell thickness increased with…
A series of new functionalized mono- and dibenzo-appended BODIPY dyes were synthesized from a common tetrahydroisoindole precursor following two different synthetic routes. Route A involved the assembly of the BODIPY core prior to aromatization, while in Route B the aromatization step was performed first. In general,…
We report here the temperature dependence studies of the fluorescence of histidine-protected Au 10 nanoclusters. We conclude from the experiments that the process involves thermally activated nonradiative trapping with an activation energy of 103 meV. At increased temperatures, the peak energy of fluorescence was foun…
Gut unterstützt: Hämin-Graphen-Konjugate (siehe Bild) zeigen eine katalytische Aktivität, die mehr als 10-mal höher ist als die eines Hämin-Hydrogel-Systems und 100-mal höher als die von Hämin ohne Trägermaterial. Die Katalysatoren zeichnen sich außerdem durch hervorragende Bindungsaffinitäten aus, und die Katalyseeff…
Our group previously developed a multifunctional, targeted cancer therapeutic based on Generation 5 (G5) polyamidoamine (PAMAM) dendrimers. In those studies we conjugated the targeting molecule folic acid (FA) and the chemotherapeutic drug methotrexate (MTX) sequentially. This complex macromolecule was shown to select…
There are materials that exist in unusual solid-liquid hybrid phases, for example, the superionics at high temperatures of $700\text{ }\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}$. Using ab initio molecular dynamics, we show that the intensely studied ${\mathrm{Cu}}_{2}\mathrm{S}$ high chalcocite phase is actually a…
Part 1 (see companion paper) of the present study discussed the application of a multimethod approach in characterizing the size of cerium oxide nanoparticles (NPs). However, other properties less routinely investigated, such as shape and morphology, structure, chemical composition, and surface properties, are likely…
We used scanning tunneling microscopy and spectroscopy (STM/S) techniques to analyze the relationships between the edge shapes and the electronic structures in as-grown chemical vapor deposition (CVD) graphene nanoribbons (GNRs). A rich variety of single-layered graphene nanoribbons exhibiting a width of several to 10…
In this paper evolution of silicon surface topography, under low energy ion bombardment, is investigated at higher oblique incident angles in the range of 63\degree-83\degree. Si(100) substrates were exposed to 500 eV argon ions. Different surface morphology evolves with increasing angle of incidence. Parallel-mode ri…
The photoluminescence of III-V wide band-gap semiconductors as InGaN is characterized by local intensity fluctuations, known as 'blinking points', that despite decades of research are not yet completely understood. In this letter we report experimental data and a theoretical interpretation that suggests they are cause…
The theory of Kolmogorov-Johnson-Mehl-Avrami for phase transition kinetics is subjected to severe limitations concerning the functional form of the growth law. This paper is devoted to sidestepping this drawback through the use of the correlation function approach. Moreover, we put forward an easy-to-handle formula, w…
For $\rm Sn_2P_2S_6$ ferroelectrics by first-principles calculations an analysis of the $\rm P_2S_6$ cluster electronic structure and their comparison with crystal valence band in paraelectric and ferroelectric phases has been done and the origin of ferroelectricity has been outlined. It was established that the spont…