Materials Literature
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Manipulation of radiation is required for enabling a span of electromagnetic applications. Since properties of antennas and scatterers are very sensitive to the surrounding environment, macroscopic artificially created materials are good candidates for shaping their characteristics. In particular, metamaterials enable…
The characteristics of positive and negative dc corona have been widely studied; however, the development process experienced of dc corona with the voltage is still unclear. This paper carried out dc corona discharge experiments under different dc voltages on the needle-plate model. Results show that positive corona g…
A 37 kW induction motor is modeled numerically taking into account the deterioration of the magnetic material properties at the cut edges of the core laminations. The magnetization properties and specific loss curves of the damaged edge and the intact material have been estimated from measurements published earlier. T…
Nanostructure Nd–Ho–Fe–Co–B alloys have been probed via atomic force microscopy and magnetic force microscopy (AFM and MFM, respectively). The ribbon samples with a thickness of ~30 μm are prepared via the rapid solidification on a rotating copper barrel. A part of samples has been subjected to hydration, whereas anot…
Abstract Nowadays, piezoelectric materials have found various applications in fields like energy harvesting, precision mechanics and life sciences. In this regard organic molecules and their crystals are not explored in detail to be used as an alternative source for piezoelectric materials. Piezo‐coefficients of diffe…
For the use of updatable full-color holography in practical applications, azo-carbazole (ACzE) monolithic dyes dispersed in poly(methyl methacrylate) (PMMA) films with high diffraction efficiency, write/delete capabilities and transparency are of extreme importance. We synthesized seven types of novel ACzE monolithic…
Many conductive scaffolds were fabricated to mimic the topography of the cardiac microenvironment in vitro in order to improve the performance of engineered cardiac tissues. This study fabricated aligned poly(lactic-co-glycolic acid)/multiwalled carbon nanotube fibers by electrospinning. The Young's modulus and conduc…
The new minerals carlsonite (IMA2014-067), (NH4)5Fe33+O(SO4)6⋅7H2O${{\rm{(N}}{{\rm{H}}_{\rm{4}}}{\rm{)}}_{\rm{5}}}{\rm{Fe}}_3^{3 + }{\rm{O(S}}{{\rm{O}}_{\rm{4}}}{{\rm{)}}_{\rm{6}}} \cdot {\rm{7}}{{\rm{H}}_{\rm{2}}}{\rm{O}}$ , and huizingite-(Al) (IMA2015-014), (NH 4 ) 9 Al 3 (SO 4 ) 8 (OH) 2 ·4H 2 O, formed from a nat…
Adv. Mater. 2016, 28, 959 The following figures are corrected as shown:
Present work describes the synthesis of colloidal silver nanoparticles using Bombyx mori silk fibroin under white light environment at room temperature. The bio reduction of silver ions showed the unique surface plasmon resonance (SPR) band at 420 nm which was confirmed by UV-visible spectroscopy. Transmission electro…
A highly dispersive powder with a (ZrO 2 ) 0.92 (Y 2 O 3 ) 0.03 (Gd 2 O 3 ) 0.03 (MgO) 0.02 composition and specific surface area of 150 m 2 /g has been synthesized via a method of coprecipitation of hydroxides with the subsequent cryochemical treatment of the gel. Nanoceramics based on the cubic modification of zirco…
Exercise and physical activity are fundamental components of a lifestyle essential in maintaining a healthy brain. This is primarily due to the fact that the adult brain maintains a high degree of plasticity and activity is essential for homeostasis throughout life. Plasticity is not lost even in the context of a neur…
In this work, Co-B-Cr catalysts were synthesized from CoCl2.6H2O and Cr(NO3)2 9H2O compounds by using NaBH4 as chemical reducing agent at temperature range of 5–8°C. The microwave irradiation method utilized depends on different gas medium (N2, Ar, CO2), microwave power (0–1,000 W), and microwave applying time (0–20 m…
The electrodeposition of polyaniline films was performed under potentiodynamic and potentiostatic conditions. Cyclic voltammetry shows that the redox electrochemical behavior changed from quasi‐reversible to totally irreversible with increasing aniline concentration. In terms of the kinetics of the nucleation and grow…
Partial discharge (PD) testing has long been an important tool for assessing the condition of the high voltage insulation in motor and generator stator windings. In the past several years, many motors have been powered from inverters which facilitate variable speed motor operation. The most common drive used today is…
This work assesses the wear resistance behavior of different high Cr and Nb alloyed hardfacing deposits carried out by Self-shielded Flux Cored Arc Welding, considering the resulting microstructures as base for the analysis. To obtain non-commercial alloys, an “in-situ” technique was employed with addition of cold wir…
Modern concepts on the supramolecular organization of natural nanocomposite materials based on structural polysaccharides are discussed, beginning from the stage of biosynthesis. The methods for obtaining nanocrystals and nanofibrils of cellulose and chitin, as well as their structure and properties, are discussed. Va…
We investigate the specific features of acoustic signals generated in water under the action of cw laser radiation with a power of 3 W at wavelengths of 0.97, 1.56, and 1.9 μm, emerging from an optical fiber. It is established that when a fiber tip without an absorbing coating is used, quasi-periodic pulse signals are…
Superhydrophobicity is an important phenomenon in nature that inspires the design of numerous biomimetic functional materials. A superhydrophobic surface is expected to have a three-phase solid–liquid-vapor interface. To directly image the buried air phase in wetted superhydrophobic surfaces, we employed synchrotron r…
We have successfully synthesized a new europium metal–organic complex (MOC) [Eu 2 (pydcH) 6 ] · 3H 2 O ( 1 , H 2 pydc = 2,6‐pyridinedicarboxylic acid) by the hydrothermal technique as well as simple solvent evaporation in water. Single‐crystal X‐ray crystallographic data of 1 confirms a molecular complex of tricapped…