Materials Literature
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We consider the role of potential scatterers in the nematic phase of Fe-based superconductors above the transition temperature to the (π, 0) magnetic state but below the orthorhombic structural transition. The anisotropic spin fluctuations in this region can be frozen by disorder, to create elongated magnetic droplets…
Environmental context Engineered nanomaterials (e.g. silver, zinc oxide and copper oxide) are being widely used in many consumer products such as cosmetics, food packaging and textiles. During their usage and treatment, they will be released to natural waters and partly dissolve, depending on the water type and nanoma…
A photoactuating nanocomposite was prepared by the in situ grafting of carbon nanotubes with PBA- b -PMMA diblock copolymer during the synthesis of the linear triblock copolymer poly(methyl methacrylate)- b -poly( n -butyl acrylate)- b -poly(methyl methacrylate) (PMMA- b -PBA- b -PMMA). Control over the molecular char…
The thermodynamic response functions of water display anomalous behaviors. We study these anomalous behaviors in bulk and confined water. We use nuclear magnetic resonance (NMR) to examine the configurational specific heat and the transport parameters in both the thermal stable and the metastable supercooled phases. T…
First principle calculations of the phonons of graphene‐ h ‐BN heterostructures are presented and compared to those of the constituents. It is shown that AA and AB′ stacking are not only energetically less favoured than AB but also dynamically unstable. Low energy flat phonon branches of h ‐BN character with out of pl…
Iron oxide nanoparticles (IONs) are being used in medicine for magnetic resonance imaging, drug delivery and hyperthermia. There are contradictory data about cytotoxic effects of IONs on various cell lines. In this study a couple of IONs with two biocompatible coatings, L-lysine and 3-aminopropyltriethoxysilane, were…
We present a theory of magnetic and magnetotransport phenomena at ${\mathrm{LaAlO}}_{3}$/${\mathrm{SrTiO}}_{3}$ interfaces, which as a central ingredient includes coupling between the conduction bands and local magnetic moments originating from charge traps at the interface. Tuning the itinerant electron density in th…
Plasma chemistry and scattering strongly affect the congruent, elemental transfer during pulsed laser deposition of target metal species in an oxygen atmosphere. Studying the plasma properties of La0.6Sr0.4MnO3, we demonstrate for as grown La0.6Sr0.4MnO3-δ films that a congruent transfer of metallic species is achieve…
Nitrogen puffing is routinely applied in nuclear fusion plasma experiments with tungsten walls to control the amount of power emitted from the plasma by radiation. However, as nitrogen is retained in significant amounts in tungsten it adds some complexity to the plasma-wall interaction. Basic questions concerning the…
Nanocomposites based on natural rubber latex as the matrix and naturally occurring tubular shaped nanoclay, halloysite nanotubes (HNTs) as the reinforcing phase were prepared through co‐coagulation method. XRD, morphology, mechanical, and solvent transport properties of the nanocomposites with special reference to wei…
Ti₂AlN nanolayered ternary alloy has been plastically deformed under confining pressure at 900°C. The dislocation configurations of the deformed material have been analyzed by transmission electron microscopy. The results show a drastic evolution compared to the dislocation configurations observed in the Ti₂AlN sample…
The transfer of chemical vapor deposited graphene is a crucial process, which can affect the quality of the transferred films and compromise their application in devices. Finding a robust and intrinsically clean material capable of easing the transfer of graphene without interfering with its properties remains a chall…
Magnetite nanoparticles with a size of 5–6 nm with potential impact on biomedicine and information/communication technologies were synthesized by thermal decomposition of Fe(acac)3 and subsequently coated with a silica shell exploiting a water-in-oil synthetic procedure. The as-produced powders (comprised of either Fe…
A small quantity of graphene flakes was doped in a ferroelectric liquid crystal (FLC), and the field-induced ferroelectric electro-optic switching was found to be significantly faster in the FLC + graphene hybrid than that of the pure FLC. Further studies revealed that the suspended graphene flakes enhanced the FLC's…
In this paper, we report the development, implementation, and assessment of a novel method for describing strongly correlated systems, spin-flip non-orthogonal configuration interaction (SF-NOCI). The wavefunction is defined to be a linear combination of independently relaxed Slater determinants obtained from all poss…
Pyrene chromophores were attached to silicon nanocrystals (SiNCs) with diameters of 2.6 and 5.0 nm to provide light-harvesting antennae for enhanced optical absorption. Efficient energy transfer from the pyrene moieties to the SiNCs was observed to induce bright visible (2.6 nm) or near-infrared (NIR) (5.0 nm) photolu…
Copper sulfide is a promising p-type inorganic semiconductor for optoelectronic devices such as solar cells, due its small band gap energy and its electrical properties. In this work nanocrystalline copper sulfide (Cu x S), with two stoichiometric ratios (x = 2, 1.8) was obtained by one-pot synthesis at 220, 230, 240…
A Mn(II) chelating dendrimer was prepared as a contrast agent for MRI applications. The dendrimer comprises six tyrosine-derived [Mn(EDTA)(H2 O)](2-) moieties coupled to a cyclotriphosphazene core. Variable temperature (17) O NMR spectroscopy revealed a single water co-ligand per Mn(II) that undergoes fast water excha…
The addition of boron as a dopant during the reaction between carbon fiber and permanganate led to significant enhancement of the growth-rate and formation of the porous framework. The doped MnO2 was superior to the pristine sample as electrode materials for supercapacitors in terms of the specific capacitance and rat…
This study reports a novel strategy to obtain a layered metastable phase of molybdenum trioxide (MoO 3 ). The metastable phase in the layered framework, i.e., MoO 3 -II, was a result of the topotactic phase transformation of hexagonal-MoO 3 (h-MoO 3 ) into MoO 3 -II. This transformation was realized through the remova…