Materials Literature
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Nano-sized magnetic particles show great promise in improving the performance of microwave absorbers with respect to the corresponding bulk materials. In this paper, magnetically hard and soft ferrite nanoparticles (CoFe2O4 and Fe3O4) having an average size of 14 and 11 nm were prepared by co-precipitation method and…
We fabricated quantum dot-sensitized solar cells (QDSSCs) using cadmium sulfide (CdS) and cadmium telluride (CdTe) quantum dots (QDs) as sensitizers. A spin coated <TEX>$TiO_2$</TEX> nanoparticle (NP) film on tin-doped indium oxide glass and sputtered Au on fluorine-doped tin oxide glass were used as photo-anode and c…
Distinguished from the usual strategy to enhance the Raman scattering such as creating hot spots in the surface-enhanced Raman scattering, this paper takes a quite different approach based on the double metal cladding waveguide. The target analyte is located in the guiding layer of sub-millimeter scale, where several…
In the present work, molecular orbital calculations using cluster models were performed within density functional theory (DFT) in order to study the adsorption of an Al atom on regular and defective graphene. Depending on the theoretical treatment of electronic exchange and correlations effects, different bonding resu…
The so-called “intermediate” phase in lead zirconate (PbZrO3) is shown to exhibit a peculiar dielectric signature, both as a function of time and of frequency, on the contrary to the low temperature antiferroelectric and high temperature paraelectric phases. This signature is present over a temperature range that over…
To investigate the steric effect of amino acids, N,N′-dialanine-1,4,5,8-naphthalene tetracarboxylic acid diethylamide (ANTA) and N,N′-diphenylalanine-1,4,5,8-naphthalene tetracarboxylic acid diethylamide (PNTA) were synthesized based on naphthalene-1,4,5,8-tetracarboxylic dianhydride (NTA) with alanine and phenylalani…
representing respectively the conducting, semiconduct-ing and insulating two-dimensional material groups havegreat potentials in the applications such as nano-electronics,transparent conductive electrodes, barrier materials, multi-functional composites, etc. Their unique electronic struc-tures mainly invoked for their…
We have experimentally demonstrated that the emission of visible light from the polymer matrix doped with luminescent dye and gold nanoparticles (GNPs) can be enhanced with the use of surface plasmon coupling. GNPs can enhance the luminescence intensity of nearby luminescent dye because of the interactions between the…
Polypyrrole (PPy) coating and PPy composite coatings were successfully electrodeposited on mild steel in the electrolytes of oxalic acid in the absence and presence of dopants using cyclic voltammetry. Two types of doping ions were employed: phosphotungstate (PW 12 O 40 3– ) and benzalkonium chloride (BAC). Corrosion-…
We demonstrate that the incorporation of nonlocal nanowire metamaterials into Salisbury screens allows for a substantial reduction of the dependence of incident angle on the absorption maximum. Realizations of angle-independent Salisbury screens for the near-IR, mid-IR, and GHz frequencies are proposed and their perfo…
We describe the rheological, dielectric and elastic properties of a nematic liquid crystal gel created using an anthrylidene derivative of arjunolic acid, a chiral triterpenoid, obtained from the extracts of the wood of Terminalia arjuna. In this novel gel, having the electron-donor and acceptor components as minority…
Dual-layer graphene (DLG) interconnects with hexagonal boron nitride (h-BN) as intercalated insulating layer have been demonstrated. The DLG employs graphene grown by chemical vapor deposition process with h-BN serving as a barrier preventing interlayer scattering, which degrades carrier transport in multilayer graphe…
Carbon nanotubes (CNTs) have great potential in the development of high-power electron beam sources. However, for such a high-performance electronic device, the electric and thermal contact problem between the metal and CNTs must be improved. Here, we report graphene as an interfacial layer between the metal and CNTs…
This study aims to demonstrate that depolymerization of cellulose can be closely controlled in a reaction media made of betaïne hydrochloride (BHC) and [TBMA]Cl opening the route to low molecular weight cello-oligomers that exhibit a high potential for marketing in the production of surfactants and thickener agents. T…
An efficient, mild, and one-step methodology for the conversion of tin-corroles to the corresponding free base corroles has been developed. The Grignard reagent, namely, methylmagnesium chloride, is responsible for the facile demetalation of tin-corroles. In an optimized reaction, almost complete destannation is obser…
In the present study the effect of second γ'-phase particles which do not undergo martensitic transformation on the functional properties – shape memory effect and superelasticity, in ferromagnetic FeNiCoAlX (X = Ta, Nb, Ti) and NiFeGaCo single crystals are investigated. Dispersed γ'-phase particles allow to control b…
The structural properties of ferromagnetic La 0.67 Ca 0.33 MnO 3 perovskite ceramics, produced by reactive spark plasma sintering (R-SPS) and conventional solid state reaction (SSR) methods, have been investigated by combined x-ray diffraction (XRD), Mn K-edge x-ray absorption near-edge structure (XANES) and magnetome…
We investigated the relationship between the corrosion of austenitic stainless steel (R-SUS304ULC) and the redox behavior of chromium in nitric acid solution under three conditions – boiling at atmospheric pressure, boiling at reduced pressure, and non-boiling – to evaluate the effects of the boiling phenomenon. In th…
The use of shape memory alloys (SMAs) in engineering applications has increased the interest of the accuracy analysis of their thermomechanical description. This work presents an uncertainty analysis related to experimental tensile tests conducted with shape memory alloy wires. Experimental data are compared with nume…
The photocarrier relaxation dynamics of EuTiO3 films have been investigated using femtosecond transient absorption spectroscopy. Two kinds of EuTiO3 films, with and without strain, have been included. In both films, the decay dynamics of 2p-3dt2g transition has a fast (∼2 ps) and slow (ns) components which are indepen…