Materials Literature
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Au and Ag isotropic and anisotropic nanocomposites were prepared using the ion implantation technique. Their optical properties were studied at several wavelengths in the optical range 300–800 nm, across their plasmon resonances. The linear regime was characterized by measuring the absorption spectrum and the third-or…
Water lubrication for polymers which is an economical solution has not been completelyreviewed from the qualitative perspective. A comparative study on water lubrication of polymers helpsto understand the fundamental aspects of tribology relevant to the different applications. The use ofwater as a lubricating material…
A protein-inspired facile approach to synthesise carbon-coated SnO2 nanocrystals (NCs) is presented. The carbon coating content could be readily tuned by adjusting the pH value of the reaction solution. The obtained carbon-coated SnO2 NCs showed a markedly improved lithium storage ability.
Ditching is an aircraft emergency condition that ends with planned impact of the aircraft on water. The high forward velocity in fixed-wing aircraft ditching affects the aircraft dynamics and its structural response due to complex hydrodynamic effects. Therefore, analysis of ditching impact is particularly relevant to…
BACKGROUND/PURPOSE: In the present study, the effect of 3-5 kDa chitooligosaccharide (COS) on homeostasis between the expression of collagen-degrading matrix metalloproteinases (MMPs) and collagen synthesis was investigated using ultraviolet (UV)-A irradiated dermal fibroblasts. METHODS: UV protection imparted by 3-5…
Zeolites are often used under mechanical stress, and it is therefore useful to study their mechanical properties for strength design in a wide range of applications. We characterized zeolite A by combining high-energy X-ray diffraction and high-resolution transmission electron microscopy techniques to investigate chan…
Zinc ferrite supported on porous carbon (ZFPC) was prepared by thermal conversion of a mixture of ferric nitrate, zinc chloride, and novolac resin and was used as a catalyst for the catalytic oxidation of mercaptan under alkali-free conditions. ZFPC exhibited a high butyl mercaptan removal efficiency (222.29 mg/g), fa…
We have studied experimentally the emission of $\ensuremath{\gamma}$-ray photons by synchrotron-radiation-excited ${}^{57}$Fe nuclei in an iron borate crystal. The crystal was set in the vicinity of the Bragg angle for pure nuclear diffraction of the synchrotron radiation. The electronically forbidden but nuclear-allo…
Graphene-enhanced Raman scattering (GERS) is emerging as an important method due to the need for highly reproducible, quantifiable, and biocompatible active substrates. As a result of its unique two-dimensional carbon structure, graphene provides particularly large enhanced Raman signals for molecules adsorbed on its…
The authors report on a highly efficient small-molecule organic photovoltaic device employing a planar-mixed heterojunction structure with subphthalocyanine (SubPc) as the donor and C 70 as the acceptor. By changing the mixing ratio of SubPc and C 70 , the power conversion efficiency can be significantly improved from…
Abstract A quantitative estimation of the confinement enhancement due to the heating profile effect is introduced to the helical fusion DEMO reactor design of FFHR-d1, based on the experimental results of the Large Helical Device. By applying this to the direct profile extrapolation (DPE) method, radial profiles in th…
Arrays of semiconductor nanowires are of potential interest for applications including photovoltaic devices and IR detectors/imagers. While nominally uniform arrays have typically been studied, arrays containing nanowires with multiple diameters and/or random distributions of diameters could allow tailoring of the pho…
Abstract N , N ´-dimethyl- N , N ´-dioctyl-2,(2´-hexyloxyethyl) malonamide (DMDOHEMA) has been synthesized by a relatively simpler route with a better yield than the conventional procedures for the synthesis of pentaalkyl substituted diamides. The proposed route replaces the use of acid chlorides and brominating agent…
LiMnO 2 is of interest as positive electrode material in Li-ion batteries because of its high theoretical specific capacity, low material cost and toxicity. However, this material suffers from a cycling-induced transformation from a layered crystal structure to a spinel-like that induces a reduction in specific capaci…
A series of modified, hafnium tert-butoxide ([Hf(OBu(t))4]) compounds (1-26) were crystallographically characterized, and representative species were then used to produce HfO2nanoparticles. This systematically varied family of [Hf(OR)4] compounds was developed from the reaction of [Hf(OBu(t))4] with a series of (i) Le…
An approach is given to analyze aggregate size distributions obtained from simulations of a fixed number N of monomers undergoing reversible self-assembly. Equilibrium distributions are derived from size-dependent equilibrium association constants by appropriately weighted sums over all partitions of N monomers into a…
MOTIVATION: Owing to the size and complexity of large multi-component biological assemblies, the most tractable approach to determining their atomic structure is often to fit high-resolution radiographic or nuclear magnetic resonance structures of isolated components into lower resolution electron density maps of the…
Recently, a second crystalline polymorph (Form II) of racemic ibuprofen was reported to be obtained by crystallization from the supercooled liquid state. The reported procedure involved a temperature schedule that included the requirement to quench the sample to a temperature (168 K) significantly below the glass-tran…
Ru-aqua complexes anchored on MNPs of Fe 3 O 4 show excellent heterogeneous stereospecific cis–trans catalytic activity for the epoxidation of non-symmetric alkenes.
The process of binding of small ligands to dihydrofolate reductase protein has been investigated using all-atom molecular dynamics simulations. The existence of a mechanism that facilitates the search of the binding site by the ligand is demonstrated. The mechanism consists of ligand diffusing on the protein's surface…