Materials Literature
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A systematic study on the deformation mechanisms of molybdenum (Mo) nanowires (NWs) was conducted using molecular dynamics simulations. Both axial orientation and wire thickness were found to play important roles in determining the deformation pathways. In the NWs with orientation 〈110〉/{111}, full dislocation plastic…
Microbial synthesis of nanoparticles has a potential to develop simple, costeffective and eco-friendly methods for production of technological ly important materials. In this study, for the first time a novelactinomycete strain Streptomyces glaucus71 MD isolated from a soy rhizosphere in Georgiais for the first time e…
Abstract Molybdenum(VI) pyridoxal thiosemicarbazonato complexes have proved to be efficient catalysts in the olefinic epoxidation of cyclooctene by aqueous TBHP in the absence of an organic solvent. High activity and selectivity have been obtained with a catalyst loading of just 0.05% molybdenum in the case of one mon…
The preparation of poly(lactic acid) (PLA) foam with a well-defined cell structure, high crystallinity, a high expansion ratio, and good mechanical properties is critical to its broader applications. However, achieving these properties in PLA foam simultaneously is challenging, because high crystallinity generally res…
In this review article we provide an overview of our work on nanoparticle-doped liquid crystal phases including nematic, smectic and columnar phases. Over the past years, we have shown that nanoparticles can serve as alignment mediators and chiral dopants for nematic liquid crystals all while affecting the electro-opt…
Besides the uniaxial nematic phase, omnipresent in liquid crystal (LC) displays, the biaxial nematic phase has been theoretically proposed to exist in which all molecular axes are oriented along individual directors. Although some high molecular mass systems (lyotropic phases, LC-polymers and colloidal LCs) reveal thi…
We have simulated the atomic structure and the transport properties of Cu50Zr45Al5 metallic liquids and glasses within a wide cooling temperature range from 2000 to 300 K, using molecular dynamics simulations. High fractions of Cu- and Al-centered full icosahedra and Zr-centered icosahedra-like clusters have been dete…
BACKGROUND: Shedding of nanoparticles from the cell membrane is a common process in all cells. These nanoparticles are present in body fluids and can be harvested by isolation. To collect circulating nanoparticles from blood, a standard procedure consisting of repeated centrifugation and washing is applied to the bloo…
We describe how poly(lactic acid)/sweet sorghum fiber composites were made by melt compounding and compression molding. Four different kinds of surface treating agents (amino silicone oil (ASO), silane coupling agent (SCA), emulsified wax (EW) and titanate coupling agent (TCA)) were used to modify the natural fiber su…
The green fibers were extracted from sansevieria leaves and treated with 5% aqueous NaOH solution. The primary and derivate thermograms of the untreated and alkali-treated fibers were measured using a TGA/DTA instrument. The thermal stability of fibers was found to increase on alkali treatment. Thermal conductivity, d…
The chemistry and physics of high-performance fibre spinning based on main-chain liquid crystal polymer (MCLCP) solutions and melts is discussed, which is the largest industrial application of liquid crystal technology. The high modulus and strength of liquid crystal polymer-based high-performance fibres is due to the…
The experimental data on the self-diffusion coefficient of austenite with different chemical compositions obtained by the radioactive isotope method have been analyzed quantitatively. The self-diffusion activation energy in pure γ-iron is shown to be ∼312 kJ/mol. Alloying of austenite with such elements as Mn, Mo, Nb,…
Properties of the flame retardant urea formaldehyde (UF) board made from saw dust fibers were investigated. Flame retardant chemicals that were evaluated include boric acid (BA) and borax (BX) which were incorporated with saw dust fibers to manufacture experimental panels. Three concentration levels, (0.5, 1, and 5%)…
This review deals with recent developments in the design of switchable dopants capable of altering the pitch of cholesteric liquid crystals under the influence of light. Cholesteric liquid crystals possess many potentially useful properties owing to the helical organisation of their mesogens. For many of these applica…
The chemical production of radicals inside acoustically driven bubbles is determined by the local temperature inside the bubbles. Therefore, modeling of chemical reaction rates in bubbles requires an accurate evaluation of the temperature field and the heat exchange with the liquid. The aim of the present work is to c…
Synthetic carbon allotropes such as fullerene, carbon nanotubes and graphene exhibit a liquid crystalline phase behaviour upon appropriate chemical functionalisation and/or physical dispersion in suitable media. This article deals with both thermotropic and lyotropic liquid crystalline phases obtained from these isotr…
In order to achieve nondestructive observation of the three-dimensional spatially resolved electronic structure of solids, we have developed a scanning photoelectron microscope system with the capability of depth profiling in electron spectroscopy for chemical analysis (ESCA). We call this system 3D nano-ESCA. For foc…
This review summarizes clinical and pre-clinical results on platinum anti-cancer drug formulations. A concise summary of the use of oxidation state to modulate cancer pharmacology is given for Pt(IV) complexes, distinct from the clinically used Pt(II) drugs. The chemistry of platinum drug formulation combines aspects…
Since the first development of surfactant-templated mesoporous silicas, the underlying mechanisms behind the formation of their structures have been under debate. Here, for the first time, time-resolved small-angle neutron scattering (tr-SANS) is applied to study the complete formation of mesoporous silica nanoparticl…
Various compounds with sulfur or diamine structure have been served as efficient reducing agents to convert graphene oxide to reduced graphene oxide. In this work, we used thiourea with both sulfur and diamine structure to synthesize reduced graphene oxide by the general wet chemical reduction method. The effective de…