Materials Literature
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Based on a sonochemical route, the effect of trisodium citrate and acetic acid, which served as the structure-directing agents, on the synthesis of Ag3PO4 nano/micro structures was investigated. It is found that the sample prepared at n(AgNO3) = 3 mmol, n(KH2PO4) = 2 mmol, n(Na3Cit) = 1 mmol and n(CH3COOH) = 3 mL is c…
We have studied the optical second harmonic generation (SHG) of a rubbed novel polyimide (PI) film having steroidal structure side chains prepared by spin coating on an indium tin oxide (ITO)-coated glass substrate. The second order nonlinear susceptibility
Pavements are made of different grades of mineral aggregates and organic binder. The aggregates are sorted in different sizes and different amount which are mixed together with bitumen. The finest mineral fraction (d<0.063 mm) is called filler. This component has an important role in asphalt mixture - it fills the gap…
A thermal barrier coating (TBC) system consists of a TBC topcoat (TC), a bond coat (BC), and a substrate. Residual stress acting on a coating is a important parameter for materials mechanics and hence need to be evaluated. We propose a simple method for evaluating the residual stresses acting on each layer of a TBC sy…
ions. At 12.5 K, a magnetic transition is evidenced by ac-susceptibility and specific heat measurements. A spin-trimer model with the leading exchange interaction J ∼ 3.2 K is derived from density-functional band-structure calculations and accounts for all experimental observations.
Currently, enhancing luminescence efficiency of upconversion nanoparticles (UCNPs) has still been a challenging topic in despite of many efforts to improve UC luminescence. Here monodisperse and ultrasmall core-shell-shell nanoparticles, NaGdF 4 : Yb 3+ Er 3+ @ NaGdF 4 : Yb 3+ @ NaGdF 4 : Nd 3+ with about 14 nm in dia…
ABSTRACT Normally, the properties of natural latex are not stable, for example, viscosity and volatile fatty acids, due to the nonrubber components that affect the quality of the latex. The objective here was to develop and compare the adhesive properties of natural latex by using furfural at different ratios. Concent…
In this work, we define the acoustic characteristics of a biphasic fluid consisting of static helium gas bubbles in liquid Fluorinert FC-43 and study the propagation of ultrasound of finite amplitudes in this medium. Very low sound speed and high sound attenuation are found, in addition to a particularly high acoustic…
WC cemented carbide suffers severe wear in water environments. A novel carbon-based film could be a feasible way to overcome this drawback. In this study, a rare earth Ce-modified (Ti,Ce)/a-C:H carbon-based film is successfully prepared on WC cemented carbide using a DC reactive magnetron sputtering process. The micro…
A new porosity evolution model is described, along with preliminary results. The formulation makes use of a Cocks-Ashby style treatment of porosity kinetics that includes rate dependent flow in the mechanics of porosity growth. The porosity model is implemented in a framework that allows for a variety of strength mode…
This work shows how multiple non-covalent interactions are employed to control metallosupramolecular architectures and we demonstrate that a ligand, which contains two bidentate domains separated by a ArOH spacer, forms a mesocate when complexed with Ag(I). However, changing this to an ArOCH2CH2Ph spacer unit results…
The effects of the initial sweeping magnetic field (Hi) on the room-temperature magnetoelectric (ME) effect for polycrystalline Z-type hexaferrite Sr3Co2Fe24O41were investigated. The results show that both the electric polarization (P) and ME coefficient (α) can be effectively controlled by Hivia its corresponding ini…
(K0.5Na0.5)NbO3 (KNN) and (K0.5Na0.4Li0.1)NbO3 (KNLN) ceramic were successfully prepared by solid state reaction method. Single phase KNN was obtained from calcined of mixed powders K2CO3, Na2CO3 and Nb2O5 at 700°C/2h and sintered of KNN pellets at 1125°C/4h. Similar with KNN, single phase KNLN was obtained from calci…
A novel BSA-coated inorganic–organic hybrid nano-material with drug delivery ability under stimulation by temperature changes is reported.
The way in which states of a topological insulator (TI) transform from monolayer to bulk is an important issue for applications in spintronics. However, unlike graphite, most layered materials are difficult to exfoliate. Using first-principles calculations, we predict that thallium selenide (TlSe) will be a layered TI…
The aim of this paper is to present a research of magnetic hysteresis loops of a toroidal ferromagnetic core made of electrical steel. The experimental results of induced voltage, magnetic induction and hysteresis loop obtained at different frequencies of the sinusoidal excitation magnetic field have been presented. T…
The authors gratefully acknowledge funding from the AMES Micron Co., LTD., Republic of Korea (2016 00000002413) for financial and support.
Abstract. The perennial problem of identifying the “best” scale inhibitor is complicated by the wide diversity of operating conditions found in the field and the variety of available chemistries. To provide some guidance in selecting the proper scale inhibitor, a study was made of several scale inhibitors to map their…
Strategies for incorporating energy-efficiency requirements into building standards have been implemented by governments in developed countries in order to introduce the concept of green nanotechnology. Substituting regular glass windows in residential/commercial buildings with smart windows is the objective. The smar…
Surface pre-treatment is one of the critical treatments for surface modification of aluminium (Al). In this study, pre-treatment of Al surface involved three stages; (1) cleaning (polishing and degreasing), (2) chemical etching (alkaline and acid) and (3) conversion coating (ie: zincate treatment). Cleaning process of…