Materials Literature
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The solid-state structure of mercury oxide and its low-pressure modifications are known to significantly differ from those found for the corresponding zinc and cadmium compounds, that is, one changes from a simple hexagonal wurtzite or cubic rock salt structure found in zinc oxide and cadmium oxide to unusual chainlik…
We present ultrafast microscopy measurements on CdSSe semiconductor nanobelts addressing the early luminescence dynamics, charge transport, and charge carrier localization in individual nanoparticles. The diffraction limited spatial resolution of our femtosecond Kerr-gated microscope allowed us to address single parti…
Rather uncommon but pronounced odd-even effects in the clearing temperatures of liquid crystals are found for three new homologous series of discotic tetraphenylenes [figure: see text]. Detailed similarities to the well-known odd-even effects in calmitic mesogens point towards a more general understanding of odd-even…
In this Brief Report, we use density functional theory to predict the existence of a heretofore unobserved crystalline compound, BaCl, and additionally predict it to be isostructural with NaCl (rocksalt). Due to the chemistry of Ba, which strongly prefers a $2+$ charge state, compounds where Ba nominally exhibits a $+…
Carrying out information about the microstructure and stress behaviour of ferromagnetic steels, magnetic Barkhausen noise (MBN) has been used as a basis for effective non-destructive testing methods, opening new areas in industrial applications. One of the factors that determines the quality and reliability of the MBN…
Inhibitive and adsorption properties of ethanol extract of Colocasia esculenta for the corrosion of mild steel in H2SO4 were investigated using weight loss, hydrogen evolution and IR methods of monitoring corrosion. The results obtained indicates that ethanol extract of C. esculenta is a good inhibitor for the corrosi…
The gelation and photophysical properties of mono- and bis-cholesterol derivatives linked to diphenylbutadiene have been investigated. Scanning electron microscopy of xerogels of the monocholesterol derivatives indicated that these molecules self-assemble into 3D networks consisting of helically twisted fibers. In con…
We investigate the dependence of the nonlinear optical properties of Cu-doped and Ag-doped As(2)Se(3) glasses on the incident pulse-width at 1.064 microm using the Z-scan technique. In this work, 11.5-ns optical pulses from a Nd:YAG laser were compressed up to 1.6 ns by using stimulated Brillouin scattering in heavy f…
Hybrid films composed of chitosan and Keplerate-type polyoxometalate, {Mo72Fe30} (Mo72VIFe30IIIO252L102.ca.180H2O, L=H2O/CH3COO-/Mo2O8/9n-), were fabricated on quartz, silicon, and ITO substrates by layer-by-layer (LbL) method. The LbL films were characterized by UV-vis spectroscopy, X-ray photoelectron spectroscopy (…
Protein-resistant poly(poly(ethylene glycol)monomethacrylate)-graft-Si(100), or Si-g-P(PEGMA) hybrids, were prepared via surface-initiated atom transfer radical polymerization (ATRP) of the poly(ethylene glycol)monomethacrylate (PEGMA) macromonomer from the hydrogen-terminated Si(100) surface (Si-H surface). The resul…
Titania−silica mixed oxides (denoted as TiO 2 −SiO 2 ) with different Ti contents are prepared by a sol−gel route in the presence of citric acid (CA). Various characterization techniques, including XRD, FT-IR, N 2 -adsorption, TEM, solid-state CP-MAS NMR spectroscopy, UV−vis, and NH 3 -TPD, have been carried out to in…
Our works shows that the americium pyrochlore (241)Am(2)Zr(2)O(7) undergoes a phase transition to a defect-fluorite structure along with an unusual volume contraction when subjected to internal radiation from alpha-emitting actinides. Disorder relaxation proceeds through the simultaneous formation of cation antisites…
In this paper the influence of different heating rates on thermoluminescence (TL) kinetics, glow-peak temperatures, heights and integrated TL intensities of the main glow peak of recently produced Mg 2 SiO 4 : Tb dosimeters are reported. The TL properties of the phosphor were investigated after β-irradiation at room t…
We present an extensive study of the structural, magnetic, and thermodynamic properties of the two heterometallic oxyborates: ${\text{Co}}_{2}{\text{FeO}}_{2}{\text{BO}}_{3}$ and ${\text{Ni}}_{2}{\text{FeO}}_{2}{\text{BO}}_{3}$. This has been carried out through x-ray diffraction at room temperature (RT) and 150 K, dc…
Lattice distortions under an electric field in a mono-domain of BaTiO(3) ferroelectric crystal have been detected with synchrotron x-ray radiation. The variation of the lattice constant with an electric field observed with high angle diffraction shows a linear response nature of the piezoelectric effect. When an elect…
Abstract CuS architectures were successfully prepared by a simple solvothermal route without any surfactant, in which copper nitrate trihydrate and element sulfur were used as reactants. The products were characterized by X‐ray diffraction, field emission scanning electron microscopy, and transmission electron microsc…
We have studied the stability and ferroelectric properties of hexagonal $R{\text{GaO}}_{3}$ and $R{\text{InO}}_{3}$ ($R$: rare-earth elements) by first-principles calculations. Computed spontaneous polarization in the series shows a systematic increase with the rare-earth elements, with values being larger in $R{\text…
The present study describes large-scale synthesis of transition metal chalcogenide in its nanoregime by an element-directed, less hazardous, template-free, inexpensive aqueous solution method. Nearly homogeneous green luminescent copper telluride (Cu 2 Te) nanoparticles (NPs) have been synthesized in a single reaction…
We report on the design, stepwise synthesis, and surface analysis of enzyme-responsive surfaces that present cell adhesive RGD sequences on-demand, that is, by enzymatic hydrolysis of inactive RGD containing precursors that carry cleavable steric blocking groups. These surfaces, incorporating poly(ethylene glycol) (PE…
We have examined the response of a polymer and a polymer nanocomposite glass to creep and constant strain rate deformations using Monte Carlo and molecular dynamics simulations. We find that nanoparticles stiffen the polymer glass, as evidenced by an increase in the initial slope of the stress−strain curve and a suppr…