Materials Literature
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Cellulose nanofibers were isolated from parenchyma cells of pears and apples by one-time fibrillation using a grinding apparatus after the removal of matrix substances. The fibrillated cellulose samples were observed by field emission scanning electron microscopy, and were found to have a fine nano-structure. That is,…
Dawson-type K6P2Mo18O62·nH2O can be used as an oxidizing agent to polymerize pyrrole and yield a hybrid organic–inorganic nanostructured material [{Py}6(P2Mo18O62)]x. By adding the mild reducing agent potassium iodide (KI), the polymerization process was controlled to generate a hybrid material with low polypyrrole co…
The phase behaviors of A(BC)(n)BA' linear multiblock terpolymers are investigated using the pseudo-spectral method of self-consistent field theory by varying the volume fractions of different blocks. The relative stability among the lamellae-in-lamellae structures with different BC internal layers is tuned by the volu…
Previous investigations have revealed that even long carbon nanotubes (CNTs) retain bond patterns that are characterized by the localization of Clar rings. Even for CNTs with 10 nm length, an alternated, oscillating structure of Clar and Kekulé patterning was also found, indicating that these arrangements may possibly…
The effect of hydrogen on the growth of carbon nanowalls (CNWs) with different hydrogen-to-carbon (H 2 /CH 4 ) flow ratios in chemical vapor deposition was investigated using scanning electron microscopy (SEM) and Raman spectroscopy. The CNWs were synthesized on catalyst-free substrates (Si or SiO 2 ) by microwave pla…
The optical absorption spectrum of armchair graphene nanoribbon has been studied using first principle calculation. For this purpose, first we calculate the band structure and therefore the energy gap of A-GNRs by tight- binding model by including the edge deformation due to passivation of edges by hydrogen atoms. The…
UNLABELLED: Epitaxial heterostructures combining ferroelectric (FE) and ferromagnetic (FiM) oxides are a possible route to explore coupling mechanisms between the two independent order parameters, polarization and magnetization of the component phases. We report on the fabrication and properties of arrays of hybrid ep…
Direct simulation of 3-D MHD (magnetohydrodynamics) flows in liquid metal fusion blanket with flow channel insert (FCI) has been conducted. Two kinds of pressure equilibrium slot (PES) in FCI, which are used to balance the pressure difference between the inside and outside of FCI, are considered with a slot in Hartman…
Multi-walled carbon nanotubes (MWNT) were oxidized by treatment with a mixture of sulfuric and nitric acids to introduce carboxyl groups on their surfaces. Triethylene tetraamine (TETA) was then grafted onto the oxidized MWNTs via a thionyl chloride route to obtain the amino-functionalized MWNTs (f-MWNT). The presence…
The purpose of this work is to study the synthesis, characterization, and catalytic performance of two types of solid heteropoly acid catalysts, namely, silicotungstic acid bulk (STAB) and STA-silica sol-gel (STA-SG) compared with sulfuric acid. From the XPS analyses, there was a significant formation of W-O-Si, W-O-W…
A hybrid solar cell is designed and proposed as a feasible and reasonable alternative, according to acquired efficiency with the employment of TiO 2 (titanium dioxide) and Mn-doped TiO 2 thin films. In the scope of this work, TiO 2 (titanium dioxide) and Mn:TiO 2 hybrid organic thin films are proposed as charge transp…
Purpose: The purpose of the research was to analysis the tool performance between cryogenic treated and nontreated PVD inserts by milling process on Inconel 718 material in terms of surface roughness and tool wear. Design/methodology/approach: The methodology adopted is milling process with various cutting parameters…
Mg alloys have been extensively studied in the last decade in the fields of bone implants,bone tissue engineering scaffolds and cardiovascular stents due to their excellent properties,such as close density and elastic modulus to those of nature bone,high specific strength and rigidity,biodegradation and biocompatibili…
This paper aims an analysis on the role of the particle bombardment and UVplasma component in the surface modification of selected polymers. The treated polymer surfaces are shown to perform differently, as a function of their chemical structure, type of exposure, i.e. plasma or UV radiation, and exposure time. Surfac…
The microstructures, mechanical properties, and biocompatibilities of as-solutionized Zr-Nb system alloys with different Nb contents for biomedical applications were investigated. The microstructures of Zr-5 mass%Nb, Zr-10 mass%Nb, and Zr-20 mass%Nb alloys subjected to solution treatment (ST) consist of α′, ω, and β p…
The polylactic acid (PLA), which is a plant-derived polymer, is an environment-friendly polymer from the point of view of not only having biodegradable property but also saving fossil resources and reducing carbon dioxide emission. Although the PLA has already been applied to many products, it has not yet been applied…
The physico-chemical properties of fish skin gelatins extracted from cultured freshwater carps viz., rohu, common carp and grass carp, were investigated and compared with commercial food grade mammalian skin gelatins. Water gel desserts prepared from these gelatins were analysed for physical properties and texture pro…
In this paper we report the study of Cd1-xZnxS thin films grown on commercial glass slide substrate by chemical bath deposition technique at 70±2oC. The effect of zinc content (x value) on structural, morphological and some optical properties have been studied. The as-deposited Cd1-xZnxS thin films were characterized…
The reversible thermochromic behaviour of homoleptic [{V(OR)(4)}(n)] complexes in solution [R = Pr(i) (product I), Bu(s) (B(s)), Nep (N) and Cy (C)] is accounted for the existence of an aggregation equilibrium involving dimeric and monomeric species in which vanadium(iv) is respectively five- and four-coordinate. Bulk…
Etched gold nanoplates have been successfully synthesized through a simple and green hydrothermal reaction, which was conducted in the presence of dextran at 130 °C for 24h. Scanning and transmission electron microscopy (SEM and TEM) demonstrated that the as-synthesized products are generally etched nanoplates and the…