Materials Literature
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Graphene is very attractive for densely integrated and flexible high-frequency/RF IC applications due to its extraordinary electrical, thermal, and mechanical properties. This work presents the design, fabrication, and characterization of graphene on-chip inductors. The skin effect in graphene inductors is investigate…
Natural fiber-reinforced green composites are increasingly being used in various industries. Generally speaking, the cross sections of natural fibers are not circular. Moreover, they show wide variation in their cross-sectional area. Nevertheless, the tensile properties of natural fibers are often evaluated on the ass…
Fe-Al intermetallic coatings have relatively high corrosion resistance, superior electrical resistivity and low thermal conductivity at elevated temperatures under oxidizing atmosphere. In this study, the Fe-Al coatings are fabricated on the steel substrate by mechanical alloying method. The steel substrate surface is…
One dimensional conducting polymer nanostructures have been the focus of quite extensive studies worldwide due to their high aspect ratio, high porosity apart from high surface area to volume ratio. Conducting polyaniline nanofibers can be synthesized by various methods. In this paper, we report the preparation of pol…
The development of polymer-filled composites with an extremely high thermal conductivity (TC) that is competitive with conventional metals is in great demand due to their cost-effective process, light weight, and easy shape-forming capability. A novel polymer composite with a large thermal conductivity of 153 W m(-1)…
We report a low-cost, facile, and template-free electrochemical method of synthesizing three-dimensional (3D) hollow metallic nanostructures. The 3D nanoporous gold (3D-NPG) nanostructures were synthesized by a galvanic replacement reaction (GRR) using the different reduction potentials of silver and gold; hemispheric…
Two series of substituted manganese triarylcorroles were synthesized and characterized as to their electrochemical and spectroelectrochemical properties in CH 2 Cl 2 , CH 3 CN and pyridine. The investigated compounds are represented as ( YPh ) 3 CorMn III and ( YPh ) 3 CorMn IV Cl , where Cor is a trianion of the corr…
Room temperature vulcanized (RTV) silicone rubber is a type of anti-pollution flashover coating which has been widely used in China. Featuring good hydrophobicity and adhesive property, RTV coatings are applied to insulators to increase the pollution flashover voltage of insulator strings. However, compared with high…
This paper presents the results of studies carried out on RTV rubber pre-coated toughened glass insulators intended for use in polluted conditions. RTV pre-coated toughened glass insulators have been developed which are coated during manufacture to produce a highly adherent and uniform layer of hydrophobic RTV silicon…
We theoretically investigate the enhancement of thermoelectric cooling performance in thermoelectric refrigerators made of materials with inhomogeneous thermal conductivity, beyond the usual practice of enhancing thermoelectric figure of merit (ZT) of materials. The dissipation of the Joule heat in such thermoelectric…
We demonstrate dielectric substrate effects on the resonance shift of terahertz metamaterials with various metal thicknesses by using finite-difference time-domain simulations. We found a small red shift in the metamaterial resonance with increasing metal thickness for the free-standing case. Conversely, when the meta…
Sodium potassium niobate nanoparticles [( K 0.5 Na 0.5 ) NbO 3 , KNN ], KNN-NPs, were synthesized using a modified sol–gel method. Structural and optical properties of the prepared samples were investigated by thermogravometric analyzer (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman and…
The crystal structures and thermal behavior of anhydrous borate-silicates of alkali and alkali-earth metals are briefly overviewed. In silicoborates (B/Si > 1), the boron atoms occur in triangle and tetrahedral coordination, as in borates; in two of three known silicoborates, the unique layered and chained polyanions…
Interactions between capillary and elastic effects are relevant to a variety of applications from micro- and nano-scale manufacturing to biological systems. In this work, we investigate capillary flows in flexible, millimeter-scale cylindrical elastic tubes. We demonstrate that surface tension can cause sufficiently f…
Using density functional theory with the effective screening medium method, we studied the electronic properties of graphene nanoribbons with zigzag and armchair edges under a lateral electric field. Our calculations showed that a nearly free electron (NFE) state emerges in the vacuum region outside the leftmost edge…
A highly sensitive colorimetric sensor for Hg <sup>2+</sup> was developed with unmodified AgNPs using an enzyme-based indirect method.
Strong incompatibility stresses may develop at grain or twin boundaries because of elastic and plastic anisotropies. Their knowledge at twin boundaries may be of interest for a better understanding of the mechanical behaviour of fcc materials that can display lamellar twin structures, such as twinning-induced plastici…
The development of biocompatible implants is remarkably increased by designing new alloys; mainly on the basis of titanium (Ti) and magnesium (Mg) for permanent and biodegradable alloys, respectively. Polymer‐based composite structures were also developed and tested to match the conditions of human bones. In this pape…
The newly designed preparation route of the crystalline TiO2 nanofibers by electrospinning was described. Relationships between calcination temperature and the precursor amount for the transition of titanium (IV) isopropoxide (Ti(Iso)) to crystalline titanium dioxide (TiO2) were thoroughly studied. The electrospinning…
Atomic level spatial variability of electronic structure in Fe-based superconductor FeTe0.55Se0.45 (Tc = 15 K) is explored using current-imaging tunneling-spectroscopy. Multivariate statistical analysis of the data differentiates regions of dissimilar electronic behavior that can be identified with the segregation of…