Materials Literature
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Use of silver nanoparticles (SNPs) is increasing in a large number of consumer products. Thus, the possible build-up of the nanoparticles in the environment is becoming a major concern. Aeromonas punctata isolated from sewage showed tolerance to 200 μg/ml SNPs. The growth kinetics data for A. punctata treated with nan…
A novel orange-yellow emitting Sr3Al2O5Cl2:Eu(2+), Tm(3+) phosphor with bright and long persistent luminescence (LPL) has been newly developed. The incorporation of Tm(3+) into the Sr3Al2O5Cl2:Eu(2+) as an auxiliary activator dominates its long persistent luminescence and thermoluminescence characteristics to a large…
There has recently been much work on using nanowires for various applications. Examples include photodetectors and photovoltaics. One of the main reasons for this stems from the nanowire’s asymmetric shape, which, in principle, facilitates the ready band transport of carriers. As a consequence, effective mobilities sh…
The transport and complex optical properties of the electron-doped iron-arsenic superconductor ${\text{BaFe}}_{1.85}{\text{Co}}_{0.15}{\text{As}}_{2}$ with ${T}_{c}=25\text{ }\text{K}$ have been examined in the Fe-As planes above and below ${T}_{c}$. A Bloch-Gr\"uneisen analysis of the resistivity yields a weak electr…
Warp knitted fabrics are widely used in medical and technical applications, as well as for clothing textiles. To predict their properties, it is useful to have knowledge about the yarn geometry and the yarn interactions within these fabrics. The geometrical modelling of warp knitted structures from single bed knitting…
Abstract This article demonstrates the properties of open‐cell flexible polyurethane foams incorporating multi‐walled carbon nanotubes. Three different types of highly functionalized nanotubes having carboxyl, hydroxyl and amide functional groups were synthesized. Neat polyurethane foam and three nanocomposite foams f…
Carbon fibers were fabricated from electrospun poly(vinyl alcohol) (PVA) nanofibers. Electrospun PVA nanofibers were treated with iodine vapor for different periods, subsequently carbonized at different temperatures, and the structural changes of the PVA nanofibers were analyzed. The nanofibers iodinated at 80 °C for…
Materials with good carrier mobilities are desired for device applications, but in real devices the mobilities are usually limited by the presence of interfaces and contacts. Mobility degradation at semiconductor-dielectric interfaces is generally attributed to defects at the interface or inside the dielectric, as is…
Half-metallic antiferromagnets (HMAFMs) have been proposed theoretically long ago but have not been realized experimentally yet. Recently, a double perovskite compound, ${\text{LaSrVMoO}}_{6}$, has been claimed to be an almost real HMAFM system. Here, we report detailed experimental and theoretical studies on this com…
Biocompatible and biodegradable microcapsules were fabricated by the covalent assembly of polysaccharides and their derivatives. The formation of Schiff's bases between polysaccharides and their derivatives enabled the microcapsules' autofluorescence properties and pH-responsivity. These polysaccharide microcapsules h…
Natural and synthetic gel-like materials have featured heavily in the development of biomaterials for wound healing and other tissue-engineering purposes. More recently, molecular gels have been designed and tailored for the same purpose. When mixed with, or conjugated to therapeutic drugs or bioactive molecules, thes…
Abstract The role of the substrate temperature on the structural, optical, and electronic properties of ZnO thin films deposited by spray pyrolysis using a zinc acetate precursor solution is reported. Analysis of the precursor compound using thermogravimentry and differential scanning calorimetry indicates complete de…
Stepping up: A two-step magnetic spin transition with accompanying structural phase transitions is reported for the first time for FeIII. The transitions are observed at 187 K and 90 K on cooling with a hysteretic transition recorded upon heating during the first crossover at 106 K. The intermediate phase persists ove…
Coupling high quality, suspended atomic membranes to specialized electrodes enables investigation of many novel phenomena, such as spin or Cooper pair transport in these two dimensional systems. However, many electrode materials are not stable in acids that are used to dissolve underlying substrates. Here we present a…
Topological insulators are predicted to present novel surface transport phenomena, but their experimental studies have been hindered by a metallic bulk conduction that overwhelms the surface transport. We show that a new topological insulator, Bi2Te2Se, presents a high resistivity exceeding 1 Ohm-cm and a variable-ran…
Competing ferro- and antiferromagnetic exchange interactions may lead to the formation of bound magnon pairs in the high-field phase of a frustrated quantum magnet. With decreasing field, magnon pairs undergo a Bose-condensation prior to the onset of a conventional one-magnon instability. We develop an analytical appr…
We have expanded the ligand knowledge base for monodentate P-donor ligands (LKB-P, Chem. Eur. J. 2006, 12, 291−302) by 287 ligands and added descriptors derived from computational results on a gold complex [AuClL]. This expansion to 348 ligands captures known ligand space for this class of monodentate two-electron don…
The adsorption kinetics of the cationic surfactant dodecyltrimethylammonium bromide at the air-water interface has been studied by the maximum bubble pressure method at concentrations below the critical micellar concentration. At short times, the adsorption is diffusion-limited. At longer times, the surface tension sh…
The behavior of the low-frequency electromagnon in multiferroic ${\text{DyMnO}}_{3}$ has been investigated in external magnetic fields and in a magnetically ordered state. Significant softening of the electromagnon frequency is observed for external magnetic fields parallel to the $a$ axis $(B\ensuremath{\parallel}a)$…
Ab initio studies have theoretically predicted room-temperature ferromagnetism in crystalline ${\text{SnO}}_{2}$, ${\text{ZrO}}_{2}$, and ${\text{TiO}}_{2}$ doped with nonmagnetic element from the 1A column as K and Na. Our purpose is to address experimentally the possibility of magnetism in both ${\text{Sn}}_{1\ensur…