Materials Literature
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Hollow rhodium nanotubes with uniform and perfect structures have been successfully synthesized through the replacement reaction between Ag nanowires and RhCl3 in saturated NaI solutions at room temperature, and the main effect of iodide ions is found to reduce the redox potential of Ag species and resolve the formed…
The date pits flour was used as a filling material in composition with high density polyethylene (HDPE). The blending proportions were: (1) 10% date pits, 90% HDPE; (2) 20% date pits, 80% HDPE; (3) 30% date pits, 70% HDPE; and (4) 40% date pits, 60% HDPE. Thermal conductivities, specific heat, and melt flow index of t…
The final properties of composite materials are highly dependent on the residual geometrical parameters (length, diameter, aspect ratio), orientation and distribution of the fibres in the matrix, which in turn are related to the processing conditions. This study analysed the fibre structure variation during the proces…
We report surface patterning on the nanolevel with the “grafting to” approach carried out at relatively low temperatures (40 °C). Low grafting temperatures were achieved viasolvent-assisted grafting and allowed the use of the developed approach for surface templating in a variety of ways. Specifically, two examples of…
Abstract: In this paper, we investigated the effective thermal conductivity of three dimen-sional nanocomposites composed of randomly distributed binary nanoparticles with large differ-ences (contrast ratio) in their intrinsic (bulk) ther-mal conductivity. When random composites are made from particles with very diffe…
Heterojunction devices were fabricated and composed of Al-doped ZnO films deposited by radio-frequency magnetron sputtering on films with different orientation obtained by potentiostatic electrodeposition. Compared to the Al-doped ZnO/(200)-orientated heterojunction, regardless of the intentional substrate heating dur…
La 1 − x Sr x Ga 1 − y Mg y O 3 − δ (LSGM) with various x and y levels were prepared and evaluated as a solid oxide fuel cell electrolyte. The electrical conductivity of LSGM was dramatically enhanced with the increase of both the Sr and Mg doping levels. The compositions with 20 mol % Sr and 15 – 20 mol % Mg were fou…
Chloride-based aqueous leaching processes find increas ingly new applications in the area of metal recovery from primary (ores or concentrates) or secondary (such as slags or dusts) raw materials. A critical operation in all these processes is the regeneration of the lixiviant, namely hydrochloric acid. Pyrohydrolysis…
Pomembnost trdih prevlek v razlicnih strojnih uporabah skokovito narasca že vec kot 20 let. Razvoj novih materialov kot npr. sodobne keramike, diamantu podobnega ogljika ter nano-kompozitnih prevlek je vzpodbudil intenzivne znanstvene raziskave na podrocju tribologije in inženiringa povrsin, ter hkrati usmeril pozorno…
We experimentally studied the guidance properties of the S-shaped metamaterial slabs. A peek of transmitted power due to the bulk guidance modes is observed in the negative band of the metamaterial,which is larger than a conventional dielectric waveguide made of FR4. The peek transmission frequency is shown related wi…
In this paper, the results of research on the bacteriostatic efficacy of selected silver particles: nano-Ag, sub-micro-Ag, AgCl in the finishing of textiles are presented. The shape and size of the silver compounds used were estimated by analysis of SEM images. The size and size distribution of the silver compounds we…
It was shown that nanoparticle–polymer interactions that affect the free volume and oxygen barrier properties of poly(m-xylene adipamide)/clay nanocomposites can be tailored by the choice of organic modifier of montmorillonite clay. Three different organo-modified clay compounds based on montmorillonite (Cloisite 30B,…
Photodynamic activity of chloro(5,10,15,20-tetraphenylporphyrinato)indium(III) (InTPP) in vitro was investigated for possible use in photodynamic therapy (PDT). The quantum yield of singlet oxygen generation in DMSO of InTPP (F D = 0.72) was higher than 5,10,15,20-tetraphenylporphyrin (TPP) (F D = 0.52). Binding sites…
This paper reports the gas pressure sintering and thermal conductivity of silicon nitride with 2 mol% Y2O3 and varied contents of MgSiN2 in the range of 0 to 5 mol% at 1900°C under a nitrogen pressure of 1 MPa N2. It was found that the density curves show a typical "V" shape against the MgSiN2 content. The 1 mol% MgSi…
A capillary microreactor with a design of steep temperature steps was utilized for the preparation of LaF3:Ce, Tb nanocrystals using diethylene glycol (DEG) as solvent, towards separation of nucleation and growth of crystallization. The redispersible and water-soluble nanoparticles consisted of well crystallized hexag…
Various oxomolybdenum complexes are efficient and selective homogeneous catalysts in the presence of organic hydroperoxides. The increasing interest in the heterogenisation of such catalysts has led to an increased interest in finding suitable support materials for the complexes. These supports include ionic liquids,…
A facile spin-casting process is used for the instantaneous asymmetric formation of gold tips on perpendicularly aligned CdS nanorod superlattices. Tip size varies as a function of precursor solution concentration and growth time. A single uniform tip occurs on the end facets of each nanorod in the array when an optim…
Superhydrophobic pure silver film composed of flower-like microstructures built by interconnected silver nanoplates on a copper plate without any modification was prepared by a facile galvanic exchange reaction between the aqueous [Ag(NH3)2]OH and the copper plate, giving rise to a contact angle as high as 157 degrees…
Monodisperse CeO(2) nanocrystals and superlattice-like colloidal particles have been successfully synthesized in ethanol-water mixed solvent by adopting a one-pot approach using icosahedral (NH(4))(2)Ce(NO(3))(6) as precursor.
A warm/hot formability testing apparatus was designed and fabricated for this study. The forming limit curve (FLC) and springback characteristics of AZ31B Mg alloy sheets at elevated temperatures of up to 300°C were investigated. The forming limit increased rapidly with temperature up to 200°C, and increased slightly…