Materials Literature
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A class of binary mixtures of Janus fluids formed by colloidal spheres with the hydrophobic hemispheres constrained to point either up or down are studied by means of Gibbs ensemble Monte Carlo simulations and simple analytical approximations. These fluids can be experimentally realized by the application of an extern…
Three kinds of para-phenylenediamine (PDA) derivatives bearing nitronyl nitroxide (NN) groups were prepared and characterized on the basis of the electrochemical, electron spin resonance (ESR) spectroscopic, absorption spectroscopic, and magnetic susceptibility measurements. It was clarified that the oxidation potenti…
Carbonaceous nanodots (CDs) have drawn increasing attention owing to their inspiring properties. CDs based composites have been attracting extensive research interest because of the properties improvement of materials and introduction of new physical or chemical properties. In this work, we designed a quick, handy and…
Dendritic julolidine-based nonlinear optical (NLO) chromophore (JTCFC) possessing isolation group was designed and synthesized to realize effective isolation of NLO chromophores in the polymer backbone. Electro-optic (EO) polycarbonates (PC-JTCFCs) consisting of the dendritic JTCFC and comonomers were prepared through…
Contact thermocouples often are used to measure surface body temperature changes of insects during cold exposure. However, small temperature changes of minute insects can be difficult to detect, particularly during the measurement of supercooling points. We developed two thermocouple designs, which use 0.51 mm diamete…
Si heterojunction solar cells were fabricated on p-type single-crystal Si (sc-Si) substrates using phosphorus-doped Si nanocrystals (Si-NCs) embedded in SiNx (Si-NCs/SiNx) films as emitters. The Si-NCs were formed by post-annealing of silicon-rich silicon nitride films deposited by electron cyclotron resonance chemica…
A green, rapid microwave-assisted solvothermal process using tetraethylene glycol (TEG) as a reducing agent has been explored as a soft-chemistry route for the preparation of various lower-valent transition metal oxides. To demonstrate the feasibility of the approach, lower-valent binary oxides such as V4O9, Mn3O4 or…
A series fo cross-linked fluorescent polystyrene (PS) microbeads with narrow size distribution and intense solid state emission was developed. Fluorophores based on perylene bisimide (PBI) and oligo(p-phenylenevinylene) (OPV) designed as acrylic cross-linkers were introduced into the polymerization recipe in a two-sta…
Besides Li17Si4, Li16.42Si4, and Li15Si4, another lithium-rich representative in the Li-Si system is the phase Li13Si4 (trideca-lithium tetra-silicide), the structure of which has been determined previously [Frank et al. (1975 ▶). Z. Naturforsch. Teil B, 30, 10-13]. A careful analysis of X-ray diffraction patterns of…
Using deuterium 2D T1 − T2 Inverse Laplace Transform (ILT) NMR, we have investigated the distribution, population, and dynamics of waters of hydration in major ampullate N. clavipes and A. aurantia silk as a function of temperature. In both samples studied, correlation times much larger than that of free water are mea…
Summary To control browning phenomenon, an edible coating of cassava starch along with ascorbic acid (AA) (combined treatment) was applied to minimally processed sweet potatoes var cv. ‘Blanca Correntina’. The samples were stored at 4 °C for 16 days, and the activities of polyphenol oxidase, peroxidase and phenylalani…
Combination of Raman spectroscopy and theoretical considerations give fundamental insights about water incorporation within the structure of aluminosilicate melts and glasses. Raman spectroscopy allows quantifying both water concentration and speciation. Particularly, it highlights the existence of OH groups different…
Recently the use of natural fiber reinforcedPolyestercomposite in the various sectors has increased tremendously.The interest in fiber-reinforced polyester composites (FRPC) is growing rapidly due to its high performance in terms of mechanical properties, significant processing advantages, excellent chemical resistanc…
The remarkable electronic properties of graphene strongly depend on the thickness and geometry of graphene stacks. This wide range of electronic tunability is of fundamental interest and has many applications in newly proposed devices. Using the mid-infrared, magneto-optical Kerr effect, we detect and identify over 18…
Verschachteltes Gedächtnis: Fasern aus mehrwandigen Kohlenstoffnanoröhren (MWCNTs) wurden mit einer dünnen Schicht von Graphenoxid (GO) bedeckt. Die MWCNT-Fasern wirken als Top- und Bottom-Elektroden, GO bildet die aktive Schicht. Zwei überkreuzt gestapelte MWCNT@GO-Fasern bilden eine Speicherzelle, die beschrieben un…
Gold nanoparticles have been efficiently photodeposited onto titanate-loaded SBA-15 (Ti( x )/SBA-15) with different titania coordination. Transmission electron microscopy shows that relatively large Au nanoparticles are photodeposited on the outer surface of the Ti( x )/SBA-15 materials and that TiO x tends to form ag…
Using nickel nitrate as catalyst precursor, a cost effective method for large scale preparation of carbon nanotubes (CNTs) was investigated through catalytic pyrolysis of phenol resin in the temperature range of 600–1200°C under an Ar atmosphere. The morphology and structure of pyrolysed resin were characterised by X-…
In the present work, a numerical investigation on the mechanism of heat transfer enhancement by a cavitation bubble collapsing near a heated wall has been presented. The Navier–Stokes equations and volume of fluid (VOF) model are employed to predict the flow state and capture the liquid-gas interface. The model was va…
High Resolution Image Download MS PowerPoint Slide The neutral, distorted octahedral complex [TiCl 4 (Se n Bu 2 ) 2 ] ( 1 ), prepared from the reaction of TiCl 4 with the neutral Se n Bu 2 in a 1:2 ratio and characterized by IR and multinuclear ( 1 H, 13 C{ 1 H}, 77 Se{ 1 H}) NMR spectroscopy and microanalysis, serves…
Summary In typical bulk barite inhibition-efficiency (IE) experiments testing scale inhibitors (SIs), the IE is determined by comparing the concentrations of the barium ion in the mix to that in an uninhibited "blank" solution. That is, [Ba2+] vs. time is monitored for both a blank and an inhibited solution. The fate…