Materials Literature
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Abstract Na 3 SbSe 3 was obtained by solid state reaction of anhydrous Na 2 Se, antimony, and selenium in a ratio of 3:2:3. It is air and moisture sensitive and melts at 870 K. Yellow single crystals of Na 3 SbSe 3 were used for single‐crystal X‐ray diffraction. It crystallizes in the cubic space group P 2 1 3 (No. 19…
This article reports a preliminary study on the effect of alloying on the antibacterial properties of silver and gold. Au-Ag alloy nanoparticles were synthesized in water by coreduction of the metal salts by sodium borohydride in the presence of sodium citrate as a capping agent. The particle morphology and size were…
“Technical textiles” is a buzz word now a day, it has wide range of applications, and in some cases it has completely replaced the conventional material. In recent years, researchers and industrial companies worldwide have been showing increasing interest in conductive textile products and textile-based composite mate…
Presented herein is a combined experimental and computational study of the gold nanoparticle (AuNP) inner filter effect on surface enhanced Raman spectroscopic (SERS) measurements. Using a bianalyte strategy in which dithiopurine (DTP) and ethanol were employed as the model analytes, we demonstrated that AuNPs enhance…
This study is devoted to the optical and electrical characterisation of discharges propagating over insulators made of polytetrafluoroethylene (PTFE) filled with different kinds of micro-mineral fillers immersed in gas or gaseous mixture, under lightning impulse voltage (1.2/50 µs), using a point-plane electrode arran…
In this work, we present an atomic scale study of the structural and chemical characteristics of interfaces between Ni and LaNbO 4 grains in Ni–LaNbO 4 cermets, a model composite material for anodes in proton-conducting solid-oxide fuel cells (SOFC). Electron energy loss spectroscopy (EELS) performed in an aberration-…
This paper presents a thermal analysis device, which can measure thermal conductivity of picoliter scale liquid sample. We employ the three omega method with a microfabricated AC thermal sensor with nanometer width heater. The liquid sample is confined by a micro-well structure fabricated on the sensor surface. The pe…
Magnetic nanoparticles (MNP), fabricated by loading a therapeutic agent into a magnetic nanoparticle through encapsulation or adsorption, have gained particular interest during the last decade because of their intrinsic magnetic nature as well as enhanced physicochemical properties. Using their superior specifications…
We report a Ni impurity induced reversible ferromagnetism and surface conduction in rutile TiO2 crystals subjected to specific thermal annealing. For annealing in vacuum at 800 °C, a growing ferromagnetic signal is seen with time while for a similar annealing in air, the magnetism vanishes. The magnetism is concomitan…
Layered double hydroxides (LDH) has wide applications as non-toxic and halogen-free flame retardant for various resins and highly efficient thermal stabilizer for halogen-containing polymers. This review will discuss some public patents and relevant papers on the flame retardancy and the thermal stability of LDH/polym…
Usage of special materials with unique properties in seismic resistant structures has increased to overcome their limited energy dissipation and ductility as a result of the 1994 Northridge earthquake. Among them, shape memory alloy (SMA) is a unique metallic alloy that has the ability to undergo large deformation whi…
We report the temperature dependent thermal properties of two types of GaN composite substrates (GaN-SiC and GaN-Si) using picosecond time-domain thermoreflectance (TDTR). The intrinsic thermal conductivity of the GaN buffer film decreases with increasing temperature, while the GaN-substrate thermal interface resistan…
Anchoring transition in cholesteric liquid crystals (CLCs) was studied in this article. The orientational change is not simple in CLCs; instead of the orientational change of the helical axis, a variety of molecular orientations in cells such as planar, Grandjean, fingerprint, and homeotropic orientations were observe…
The corrosion behavior of tinplate in 0.1mol/L citric acid solution in aerated and deaerated conditions, respectively, were studied by a combination of electrochemical impedance spectroscopy (EIS), inductively coupled plasma (ICP) and scanning electron microscopy (SEM). Differences between the corrosion mechanisms in…
In order to determine the effect of quaternary ammonium groups and carboxymethyl groups of chitosan on antioxidant activity, nine quaternized carboxymethyl chitosan oligosaccharides (QCMCOs) were prepared from chitosan with chloroacetic acid and 2,3-epoxypropyltrimethyl ammoniumchloride as the modifying agent under mi…
In HVDC cable insulation, the steady state electric field distribution is mainly determined by the following factors: DC conductivity, charge trapping, electron injection and ion formation. Factors which contribute strongly depend upon changes in morphology and chemical features within the insulation. In case of polym…
The magnetic response of nickel nanowires embedded in porous alumina has been investigated in a wide temperature range, from 5 K up to 700 K. Hysteresis loops and magnetization isotherms were measured on samples of Ni nanowires with different sizes and morphologies up to the Curie temperature. At room temperature, the…
To investigate the effects of chitosan composite coatings for maintaining the quality of grass carp portions, indictors of microbiology (total bacteria count, TBC), chemistry (pH; total volatile basic nitrogen, TVB-N; 2-thiobarbituric acid, TBA; K-value), and sensory characteristics were analyzed periodically. The res…
The corrosion inhibition of mild steel in 1M HCl and 0.5M H2SO4 by L-Cysteine (Cys) has been studied using electrochemical impedance spectroscopy (EIS) measurements and molecular dynamics (MD) simulation. The results show that the inhibition efficiency increase with the increase of Cys concentration in both acids, and…
Grain refinement is a useful method to improve the strength and toughness of steels without changing their chemical composition. In this study, critical temperatures for the thermomechanical treatment of niobium microalloyed steel were determined experimentally and through thermodynamic data. Simulations of convention…